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cwinkler

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patents_green_plastics_10k

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sunshades for vehicle windows are provided , including a shade having upper and lower edges , and a pair of support members having free ends . one of the members is associated with each of the upper and lower edges , and the support members are constructed to be spaced apart to support the shade in an extended , open position during use . each of the support members includes a self - straightening tape that is arcuate in cross - section and can be repeatedly folded without significant plastic deformation .

a process is disclosed for preparing long - acting alpha interferon - containing compositions . alpha interferon is contacted with a relatively small molar excess of a substantially non - antigenic polymer in the presence of a surfactant to preserve bioactivity . isolation of the desired conjugate species having optimal activity is also disclosed .

a method and apparatus for the application for one or more deposits of material to a succession of discrete articles such as fasteners as is provided . the method and apparatus of the present invention deposits a droplet or extended bead of thermoplastic or thermoset material onto the surface of a part that is urged into a postion once it solidifies to extends above the surface of the part to create assembly resistance when the part is assembled into or over another part .

the present invention provides a thermosetting resin composition comprising a prepolymer of a poly - p - hydroxystyrene derivative represented by the general formula ## str1 ## wherein a is a halogen group , r 1 is an alkenyl or alkenoyl group of 2 to 4 carbon atoms , 4 carbon atoms , m denotes a number of 1 to 4 and n denotes a number of 1 to 100 , an epoxy - modified polybutadiene , and an aromatic maleimide compound , and a prepreg and a laminated sheet which use said resin composition .

a sanitary slider valve shown specifically as a rotary carousel diaphragm valve which has a thermoplastic elastomeric diaphragm integrally molded to form the multiple sealing ports of the rotor / stator interface is described . ports or grooves molded into the face of the elastomeric diaphragm are positioned to sealably engage grooves or ports in the stator face , and to form sanitary elastomeric tubular ducts leading through the body of the rotor or of the stator , terminating as elastomeric flanges . these flanges permit direct connection to sanitary flared piping flanges within the carousel which lead to and from multiple columns or other solid phase bed segments , or to sanitary flared piping flanges connecting the stator to piping interconnecting the multiple carousel columns to each other and to external supply and collection lines . sanitary operation is made operable by energized flexible diaphragm wiping lip seals which maintain fluid - tight sealing engagement with the opposing face even when the rotor is lifted off the stator far enough to permit cross flushing of the port sealing faces with sanitizing fluid . the valve permits sanitary operation of advanced chromatographic separations of biopharmaceuticals , including simulated moving bed chromatography .

nanobiomimetic supercapacitors comprise an “ electron well ” and an “ electron - dam ” membrane electrode assembling ; the “ electron - well ” mea compromises an electrode comprising a substrate of glassy carbon ; a self - assembling membrane comprises a polymer matrix ; wherein the polymer matrix is comprised of an electrically conductive copolymer ; wherein the copolymer is further comprised of one or more first β - cyclodextrin molecules having at least one or more free acetyl groups ; one or more polyethylene glycol molecules ; one or more poly molecules ; and one or more second β - cyclodextrin molecules ; the self - assembling membrane having a surface structure comprising one or more nanopores and pillars ; the nanopores and pillars are vertically oriented on the substrate to form nanopore and pillar array ; the “ electron - dam ” mea compromises the nanopore / pillar layer sealed with an embedded hydrophobic aromatic substance having a flat lid structure ; wherein the mea can be as either said positive or negative electrode ; wherein the “ electron - well ” also can be either said as positive or negative electrode ; separated by a porous insulator wetted by an electrolyte - free and air - independent organic solution ; at least two current collectors are at each of the end of the meas .

fiber reinforced plastic tubing is formed by an innermost layer of braided strands that include longitudinal stud fill strands within the braid , a second layer of longitudinal strands , and a third layer of braided strands , all thoroughly encased in a monolithic mass of plastic matrix material that is not , itself , divided into layers . the tube is fabricated on a continuous basis by winding two sets of strands in opposite directions on a mandrel and braiding the two sets with each other and with stud fill strands that prevent that first layer of braid from stretching longitudinally and thereby tightening immovably on the mandrel . the strands are braided dry but are wetted with liquid plastic matrix material as the braid is compacted on the mandrel . a fourth set of strands is wetted by liquid plastic matrix material and guided to lie longitudinally along and evenly spaced about the wetted first braid , and fifth and sixth set of strands are braided dry around the fourth set and compacted and wetted to press against the fourth set and to press the fourth set against the first setted braid . no curing is done until after the latter compacting and wetting . the multi - layer tubing is pulled along the mandrel by alternately - operating gripping devices in which a soft tube sealed into a rigid shell is expanded inwardly by fluid pressure between the shell and the soft tube , thereby forcing the soft tube to grip the tubing around the entire circumference of the tubing .

a finish for cellulosic fibrous substrates containing tertiary amine - containing polymers for providing durable control of body odors and the cellulosic materials treated with the finish , which materials exhibit little or no discoloration and little or no degradation of physical strength as a result of the treatment .

the present invention provides novel heat stable polyamide - imide polymers having excellent flow properties which render them more readily processible into fibers , films , sheets and other molded articles . the polymers are prepared by forming the polycondensation product of one or more aromatic diamines and one or more trifunctional acid anhydride monomers , at least one of said diamine monomers containing the group ## str1 ## linking two aromatic moieties , wherein r is cf 3 or phenyl . in addition to improved flow properties , the polyamide - imide polymers of this invention also exhibit improved solubility properties in most organic solvents , improved resistance to attack by chlorinated solvents such as trichloroethylene as compared with polyimides , improved hydrophobic properties as well as excellent thermal properties including resistance to thermooxidative degradation .

polyamines having the formula : ## str1 ## wherein r 1 and r 2 are alkyl , aralkyl or aryl having up to 10 carbon atoms ; and a and b may be the same or different and are integers from 1 to 8 ; or a salt thereof with a pharmaceutically acceptable acid . anti - neoplastic , anti - diarrheal , anti - peristaltic , gastro - intestinal anti - spasmodic , anti - viral , anti - retroviral , anti - psoriasis and insecticidal compositions comprising biologically effective amounts of the above - described amines and biologically acceptable carriers therefor are also disclosed , as well as methods of treatment , administration or application of biologically effective amounts of the polyamines of the invention . also disclosed are methods for preparing the polyamines of the invention .

an open top vessel containing bulk or liquid material comprising an inclined front wall , an inclined rear wall , and inclined opposite side walls . the walls of the vessel extend downwardly and inwardly from the upper ends thereof towards the lower ends thereof towards a discharge opening formed at the lower end of the vessel . a support frame is provided for supporting the vessel and includes at least a pair of horizontally spaced - apart , horizontally disposed support frame members which receive inverted u - shaped supports on the upper end of the vessel . the vessel is ideally suited for use as a hopper bottom in a hopper bottom trailer . the vessel is comprised of a fiber reinforced plastic material .

a low cost oil , grease removal assembly includes a rotomolded plastic container having an inlet and an outlet ; a rotomolded plastic basket support located at the inlet inside the container ; a rotomolded plastic outlet baffle located in the container at the outlet ; a plurality of container cover sections including a first section to cover the basket support , a second container cover section having an oil , grease removal mechanism downstream of the basket support and upstream of the outlet baffle , and a third container cover section to cover the outlet baffle .

new aerogels are disclosed which comprise silica , at least one organic polymer having polar functional groups , and at least one metal ion . also disclosed are methods for making such aerogels . the present invention further concerns printable objects comprising these aerogels , specifically when the print media are imaged by the absorption of liquid and the spatial localization of pigments or dyes .

apparatus for simultaneously severing and heat sealing of overlapping portions of thermoplastic sheets between a fixedly mounted anvil and a reciprocable heated blade has an uncooled hold down device with two metallic plate - like members which flank the blade and are confined in layers of silicone so that they are thermally insulated from the blade and need not come in direct contact with the thermoplastic material . those portions of the silicone layers which contact the exposed side of the adjacent sheet opposite the anvil at the respective sides of the blade tend to stretch the sheets in a direction at right angles to the cutting plane to thus ensure immediate separation of the welded seams which are formed by the blade during severing of the sheets .

a novel process is disclosed for the polymerization of phenols , e . g ., xylenols , and recovery of polyphenylene ethers from the polymerization mixture . the method is based on the use of hot methylene chloride as a reaction solvent , elevated oxygen pressure and separation of the polyphenylene ether as a solid complex with methylene chloride upon cooling . also a feature is the recycle and recovery of methylene chloride .

there is provided embedded light guiding parts that allow for light , signals or live images to appear on its surface . specifically there is provided a light system having an array of rods made in a hard transparent or translucent polymer material embedded in a building material . the tapered rods are held together by a back - bone that connects the bases of the tapered rods to achieve an evenly distributed array of tapered rods , preferably having the same orientation , wherein the rods are adapted to receive a light input at the base ends and to transmit the light output at the front ends of the rods .

an oxidatively coloring electrochromic layer of composition m y cro 2 + x where m = li , na or k with improved transmittance modulation , improved thermal and environmental stability , and improved resistance to degradation in organic liquid and polymeric electrolytes . the m y cro 2 + x provides complementary optical modulation to cathodically coloring materials in thin - film electrochromic glazings and electrochromic devices employing polymeric li + ion conductors .

a process is described for converting organic materials into a bioplastic suitable for use as a biodegradable plastic . in a preferred embodiment the process involves thermally gasifying the organic material into primarily carbon monoxide and hydrogen , followed by photosynthetic bacterial assimilation of the gases into cell material . the process is ideally suited for waste recycling and for production of useful biodegradable plastic polymer .

the present invention pertains to a method for forming poly - acrylic acid granules and granules formed therefrom wherein the granules are flowable , have an increased bulk density relative to the as polymerized polyacrylic acids , and a low amount of dust which is generally characterized herein as particles which pass through a 325 mesh screen . the granules formed by the method of the present invention can be used to prepare controlled release tablets , especially controlled release pharmaceutical tablets . the controlled release properties of the tablets formed from granules prepared according to the present invention are unexpectedly better than tablets prepared from granules formed by other known granulation methods .

a multipurpose attachment for cylindrical cans containing paints , varnishes and the like , which snap - fit engages to the top of the open cans and having uniformly thin , structurally rigid , and singularly molded construction that is disposable . the paint can liner protects the can &# 39 ; s sealing channel into which the lid of a metal can mates , and provides an array of benefits suitable for either metal or plastic paint cans . in its preferred embodiment , primarily for gallon or similarly sized containers , the liner includes a pouring spout , an optional filter for use while pouring , a ribbed sloping surface for rolling excess paint from mini rollers , a horizontal shelf for resting either mini roller or paintbrush , and a linear edge for wiping excess paint from brushes .

a method for coating a device , such as an industrially or medically applicable device , with a polymer layer is provided . the method includes contacting the device with a grafting initiator comprising at least one photoinitiator group , exposing the device to radiation , contacting the device with a polymerizable monomer , and again exposing the device to radiation .

an agent and method for treating biodegradable synthetic yarns fabricated from a polymer comprising lactic acid as a main component , which enable improved lubricity , cohesion , etc . to be so imparted to the biodegradable synthetic yarns that the yarns can be prevented from fuzzing and breaking at every step from spinning to down - stream step , especially at a false twisting step and improved in terms of bulkiness , providing yarns having improved mechanical properties in a stable manner . the agent of the invention comprises 0 . 1 to 30 weight % of a specific functional agent , and a lubricant and a surfactant in the total amount of 70 weight % or greater , and has a friction coefficient in the range of 0 . 04 to 0 . 35 .

a sleeve forming apparatus wherein a rectangular sheet of thermoplastic material is formed into a tubular shape having overlapped end portions that are sealed together so as to minimize the lap thickness of the seam . also disclosed is a method of forming a tubular shape wherein the seam area is worked to minimize its thickness while preserving its liquid - tight characteristics .

a molded body may comprise a thermoplastic matrix comprising a first polymeric material , a second polymeric material distributed in the thermoplastic matrix , and a third polymeric material enveloped by the second polymeric material . the first polymeric material , the second polymeric material , and the third polymeric material are compounded together . the first polymeric material may have a first molecular weight and a first polarity . the second polymeric material may have a second molecular weight different from the first molecular weight and a second polarity different from the first polarity . the third polymeric material may comprise a recycled material .

a system and related techniques provide a platform for encoding high density geometric symbol sets , for example a triangular barcode - type of encoding which may be used to encode drivers &# 39 ; licenses , biometric ids , passports , or other transaction or identification media . according to embodiments of the invention in one regard , an inkjet , laser or other printer or output device may imprint a paper , plastic or other media with geometric symbols such as triangles in a defined array , to represent , for instance , name , address , or other identifying information , for instance such as digital facial photographs , iris or retinal scans , fingerprints , signatures , or other information . the geometric symbols may in one regard be arranged in a staggered format , separated in embodiments by a white space that may serve to reduce aliasing effects and other distortions . because triangular symbols may in general be packed more closely together , and the number of distinct individual symbols may scale according to the range of color space employed for the symbol set , information densities high enough to satisfactorily encode biometric iris or retinal scans , digital facial photographs , or other identification or other information may be achieved . in embodiments , error correcting processing such as reed - solomon techniques may be employed to enhance scanning accuracy . in further embodiments , a reference palette may be embedded within the imprinted media , to provide a scale against which color fading or other distortion may be measured .

the present invention generally relates to a bubble package which allows a product to be displayed independently standing alone or hanging from a bracket / shelf , and also provides the ability to separate the paper and plastic portions of the package into at least two separate environmentally recycled portions . the paper based portion of the package operates as a display card and / or as a stiffener . the sides of the one or more display cards are bonded to one another to enclose the product within the plastic and prevent tampering with the product . the plastic portion , in addition to containing and displaying the product therein , optionally incorporates a base near the bottom of the package . the base protrudes from the bottom of the package and secures back onto the plastic portion via a securing mechanism . this arrangement allows the package to stand independent . optionally , a corrugated plastic insert can be used to provide additional support to the unit . in a typical arrangement , the plastic portions and paper portions avoid being bonded or directly adhered to one another , allowing the card to be entirely separable and allowing for complete environmental recyclability .

the present invention describes a polyoxaester copolymer and blends thereof that may be used to produce hydrogels , surgical devices such as sutures , sutures with attached needles , molded devices , drug matrices , adhesives , sealants and the like . the invention also contemplates a process for producing these polyesters . the polyoxaester copolymers of the present invention are formed from a first divalent repeating unit of formula ia : -- r . sub . 30 -- c --] ia a second divalent repeating unit of the formula ib : -- c -- o -- r . sub . 3 -- o -- c -- c --] ib and a third repeating unit selected from the group of formulas consisting of : . sub . a , ii --]. sub . b , iii ]. sub . p -- o --). sub . l g xi and combinations thereof . these aliphatic polyoxaesters may be blended with other polymers that are preferably biocompatable .

the present invention relates to copolymers for applications in medicine and biotechnology and preparation thereof . copolymers comprises polyvalent n - acetyl glucosamine in polyvalent form and bind more efficiently to lysozyme than nag itself . the copolymers exhibit effective inhibition even at very low ligand concentrations . the copolymers could be used for prevention and treatment of bacterial and viral infections . moreover , these copolymers form are stimuli sensitive polymers and can be used for the recovery of biomolecules . the methodology can be extended to other ligands such as sialic acid and used for preventing influenza and / or rotavirus infections . it also provides a method for the synthesis of copolymers wherein polymers comprising sequences of specific ligands are required .

a device for passing a biopolymer molecule includes a nanochannel formed between a surface relief structure , a patterned layer forming sidewalls of the nanochannel and a sealing layer formed over the patterned layer to encapsulate the nanochannel . the surface relief structure includes a three - dimensionally rounded surface that reduces a channel dimension of the nanochannel at a portion of nanochannel and gradually increases the dimension along the nanochannel toward an opening position , which is configured to receive a biopolymer .

a bottle for liquids is fitted with a dropper adaptor including a plastic body having extending longitudinally therethrough a flow channel . over at least a first length portion thereof the flow channel has a cross section in the shape of a star with at least three branches . the channel opens outwardly from the body only at an outlet aperture at an outlet end of the flow channel and at an inlet aperture , defined by plural windows , at an internal end of the flow channel .

disclosed is nanocoupling of a polymer onto a surface of a metal substrate for improving coating adhesion of the polymer on the metal substrate , and in vivo stability and durability of the polymer . in accordance with the present invention , the polymers can be grafted via a chemical bonding on the surface of the metal substrate by the nanocoupling , by which adhesion , biocompatibility and durability of a polymer - coated layer which is to be formed later on the metal substrate were remarkably improved ; therefore , the nanocoupling according to the present invention can be applied to surface modification of a metal implant , such as stents , mechanical valves , and an articular , a spinal , a dental and an orthopedic implants .

a lid for closing a cup along a peripheral sealing edge and a method for producing such a lid . the lid includes at least one aluminum film and an optionally multi - layered plastic layer which is co - extruded onto the aluminum film and has a closed predetermined tearing line . the plastic layer is made of plastic based on polyethylene or plastic based on polypropylene , and the predetermined tearing line is introduced into the plastic layer preferably by means of a co 2 laser . the predetermined tearing line may be provided directly in the region of the sealing edge .

a storage - stable aqueous concentrate for the preparation of a disinfectant and a disinfectant obtainable from such a concentrate by dilution are disclosed . the concentrate comprises hydrogen peroxide , colloidal silver , a biopolymeric stabilizer such as gum arabic , and phosphoric acid . in order to improve long - term stability and to reduce initial decomposition of the hydrogen peroxide in the first few days after preparing the concentrate , the concentrate further comprises sodium nitrate or sodium sulfate . the concentrate is free of any synthetic organic complexing agents , thus rendering the concentrate suitable for food - and drinking water applications . also disclosed are methods of preparing and using the concentrate .

a light structure for antenna type mountable on vehicles for visibility from any direction , the light being a direct lineal extension of the antenna mast or shaft consisting of a clear plastic tube wrapped in various colored film along its length and embraced by translucent light diffusing bodies separated by opaque dividers and associated with internal lamps for illuminating each colored zone along its length powered by a suitable source of electrical energy in a switch controlled circuit .

this invention relates to method and apparatus for producing a composite container having a body label or tubular sleeve mounted temporarily thereon adapted to be shrunken into final surface covering position . the tubular sleeve is preformed of thin flexible plastic material and flat - folded until ready for use when it is fully opened and arcuately conveyed in axial registry with a container therebeneath . the sleeve preform of heat - shrinkable plastic material is telescopically assembled onto the container while the latter is conveyed through a coincidental arcuate path . the container preferably consists of a one or two - component lightweight hollow plastic container with the tubular preform made slightly larger in diameter to surround a body portion of the container . the tubular sleeve preform is engaged and fully opened by a juxtaposed pair of vacuum heads which are pivotally partible and arcuately conveyed by such heads , and then transported downwardly in telescopic relation when in axial alignment with the container . the opened sleeve and upright container are continuously moved in synchronism in a coincident arcuate path for such sleeve mounting in temporary relation on the container body where it is adapted to subsequent heat - shrinking in place in permanent conforming arrangement .

plastic objects are exposed to a gas mixture containing fluorine and a gaseous oxidizing agent , to produce an extremely smooth surface on the objects . the oxidizing agent can be oxygen , and the object is preferably exposed to the gaseous mixture for about 10 - 30 seconds . the surface of the object treated according to the present invention is found to be considerably more smooth and glossy than objects treated with fluorine alone , without the oxidizing agent . the surface formed according to the present invention therefore minimizes the contact area between the treated object and the surrounding media .

an improved method for reclaiming waste plastic materials generated during an extrusion coating operation . a rotating funnel or other device is used to gather the hot molten plastic waste material and twist it into the shape of a rope . the plastic rope is passed through a cooling bath and one or more pinch rollers . after passing through the rollers , the plastic rope is spooled , chopped , or fed to a plastics processing machine .

cemented carbide articles produced by tape casting a slurry of ingredients including organic resins and plasticizers , forming the cast tape into a desired shape and firing the tape , are improved by eliminating carbonaceous residue - forming ingredients from the organic portion of the slurry , resulting in reduced porosity of the fired article .

a wastewater - recyclable polymerization process for producing a polyaniline - based resin includes : feeding into a reactor an aniline monomer , an acid solution and an oxidizing agent to undergo polymerization so as to produce polyaniline resin particles ; filtering the polyaniline resin particles from an acidic aqueous solution formed during the polymerization ; neutralizing and drying the polyaniline resin particles to form a powder ; recycling the acidic aqueous solution by mixing the acidic aqueous solution in the reactor with a fresh reactant feed which contains the aniline monomer , the acid solution and the oxidizing agent ; and permitting the reactant feed to undergo polymerization in the presence of the recycled acidic aqueous solution at room temperature without cooling the reactor .

a system and method for automated bending of wood strips . the system includes an preprogrammed automated robot arm that is fitted with a gripper for grasping and manipulating the wood board around a hot mandrel in order to bend the wood into intricate bent shapes . the wood strips are first soaked in water so that they pliable to bend around the mandrel . the heated mandrel plasticizes the lignin to allow the fibers to reorient in the wet wood strips thus fixing or locking the wood in the bent shape . the grippers are preferably pneumatic grippers formed from two plates that move towards each other to grasp or clamp onto the wood strip . a friction plate urges the wood strips against the heated mandrel to provide consistent and constant contact between the wood strip and the surface of the hated mandrel .

coatings to enhance the echogenicity of materials are especially useful for medical devices wherein the practitioner desires to locate or visualize a device by ultrasonic imaging when the device is inserted into a body cavity . these coatings can be applied to any device of virtually any composition . to accomplish this , a polymer matrix is formed containing an entrapped gas in enclosed bubbles or open surface channels or cavities . coated needles are visible in ultrasound when inserted in animals . a pre - coat or base coat may be applied to condition the surface to enhance adhesion . a finish coat or top coat may be applied to improve durability , smoothness , and biocompatibility , lubricity , antibiotic , antimicrobial , antithrombogenic activity , and other desirable properties for the finished product . coating liquids and methods for preparing and applying such coatings are disclosed , including forming bubbles by chemical reaction during the coating process .

a surgically implantable mesh for covering a tear or rupture in a lining associated with an interior body cavity . a mat shaped polymer body has top and bottom spaced apart surfaces which are communicable at intervals by an interior configuration defined in the body and which promotes tissue in - growth following implantation . an antibacterial additive is intermixed with the polymer in a viscous state prior to formation and can included at least one of silver , gold , copper , bronze , or ground bamboo fibers .

a message or note board that is also a holder for mail constructed of recycled plastic material and assembled from several different types of plastic but easily disassembled with common hand tools so that after final use , the parts may be segregated for further recycling . the noteboard has a flat plastic backing or plate that can be attached to a wall or a door on a refrigerator . attached to the front surface is a transparent sheet that can be written on with a dry - erasable pen . a sheet of paper may be inserted between the transparent sheet and the backing plate and contains information . the lower end of the plate has an l - shaped tray or ledge that supports mail .

a mold for making a sandal having an injected molded sole comprises a last for receiving an upper , a ring , and a sole plate . the last , ring and sole plate form a sealed cavity where the sole is formed in response to plastic material being injected into the sealed cavity . the injected plastic material has tendencies to adhere to portions of the upper on a portion of the last forming a wall of the sealed cavity and remain in the cavity as the last is removed from the cavity . the portion of the last forming the sealed cavity wall includes an ear extending into the cavity for overcoming the tendency of the injected plastic material to remain in the cavity . the ear frictionally engages an interior surface of the sole to pull the sole from the cavity as the last is being removed from the cavity .

a thermoplastic container molded in a single piece includes a storing body and a pouring tube . a pivoting means or hinge for the tube is obtained by the formation of two recessed pyramids on two lateral walls such that the pivoting of the tube takes place by inner surfaces , which are incorporated in the break in the articulation , folding up flat .

a method and apparatus are provided for attaching a cranial flap to a skull . the cranial flap and the skull are spaced apart by a kerf defined by a first kerf edge on the cranial flap and a second kerf edge on the skull . the apparatus comprises at least one attachment device made of a bioabsorbable polymeric material and having a head portion , a main body portion , and an end portion . the end portion is deformable from an axially extending first condition to a radially extending second condition by heating the end portion and forming the end portion around the first kerf edge , which clamps the attachment device to the cranial flap . the main body portion includes a first surface portion that attaches to the first kerf edge and a second surface portion that attaches to the second kerf edge . the attachment device is positionable in the kerf to secure the cranial flap to the skull by frictional engagement between the first surface portion against the first kerf edge and frictional engagement between the second surface portion against the second kerf edge .

there is provided a phosphor down converting element based on fluoropolymer resin and a method for fabricating the same . there is further provided a method for using said phosphor down converting element to generate white light from a radiation source . the method for fabricating phosphor down converting element includes preparing an appropriate phosphor powder mixture that is capable of absorbing a first band of wavelengths and emitting a second band of wavelengths being greater in length than the first bands , incorporating the phosphor powder mixture into or on a phosphor carrier element comprising a fluoropolymer material , and molding the phosphor down converting elements into useful shapes . fluoropolymers are the most chemically inert of all plastics , can withstand both extremely high and low temperatures , and show a resistance to weavering and uv degradation , making fluoropolymers optimal for use as a phosphor carrier .

methods of cooling blood platelet suspensions which can be stored and preserved for extended periods of time . the normal morphology of platelets and their ability to function are substantially maintained . the steps include preparing a platelet suspension having blood platelets , a carbohydrate and at least one biocompatible polymer to assist in stabilizing platelet membranes . the platelet suspension may be cooled to a temperature of less than approximately 10 degrees c . at a rate of cooling greater than 1 degree c ./ min . the platelet suspension may be kept at a storage temperature ranging from approximately − 1 to 6 degrees c . additionally , methods are provided for maintaining the biological activity of blood platelets . platelet suspensions may be initially prepared which include platelets , sucrose , verapamil , magnesium chloride and a biocompatible polymer . cooling of the platelet suspension may be followed at a cooling rate ranging from approximately 1 to 12 degrees c ./ min or faster to a temperature below 10 degrees c . the cooled platelet suspension may be thus stored at a storage temperatures as high as 6 degrees c .

a multi - roll segment package for plastic tape comprises a plurality of roll segments made up of concentrically disposed spiral winding groups separated and defined by helical winding portions of tape connecting the spiral winding groups on adjacent roll segments . the spiral winding groups of the end roll segments , comprise at least 2 . 5 times the number of windings as the center roll segments , , . the roll package features high wind density and good resistance from telescoping .

a high quality child resistant container comprising a durable metallic reservoir and durable plastic metal cap . the child resistant container comprises a durable and rugged reservoir and similarly durable locking cap . the cap is secured to the reservoir by a threaded , or bayonet - style connection . once installed on the reservoir , the cap is prevented from being easily removed by a child , due to child resistant features integrated in the design of the cap and reservoir . also , a method of reducing friction between the sealing surfaces of a sealed container . specifically between the reservoir , cap and seal of a container , which allows easier closing of containers which require a simultaneous compression and twist motion to close .

the present disclosure provides methods for the diagnosis of metastatic prostate cancer and / or the prediction of the metastatic ability of prostate cancer in prostate biopsy tissue . metastatic ability of prostate cancer is positively correlated with the level of transcriptional and translational expression of the muc18 coding sequence in the neoplastic tissue . methods for the determination of muc18 protein synthesis include western blots , elisa , radioimmunoassay , immunofluorescence , and other immunoassays using muc18 - specific antibody and suitable detection means . methods for measurement of transcriptional expression of the muc18 coding sequence include northern hybridizations and quantitative reverse transcriptase - polymerase chain reaction analyses . absence of or very low muc18 expression in the prostate tumor tissue is associated with nonmetastatic cancer , while relatively high levels of muc18 expression are predictive of prostate cancer which is likely to metastasize or which has already metastasized . the present disclosure provides an improved diagnostic tool to aid the medical community in the choice of appropriate treatment regimens for prostate cancer patients .

a heat sealing device in a packaging apparatus utilizing a plastic film for continuously seal an overlapped axial portion of the plastic film . the device comprises a pair of heating rollers which are rotatably and oppositely placed to hold the overlapped portion of the film between them . each of the heating rollers has a heating surface in its outer periphery which is pressed against the film and a coaxial and annular sealed chamber which is formed inside the heating surface and contains working liquid as a heat medium . a heat source is provided to be opposite at least to a portion of the sealed chamber to heat the working liquid . the working liquid generates vaporized gas upon heating by the heat source , and the pressure and the temperature in the sealed chamber are maintained at a predetermined degree so that the vaporized gas is condensed substantially at the temperature for fusing the film .

a biocidal phosphate ester in combination with an inert inorganic or organic particulate or polymeric carrier . the biocidal - carrier composition is useful in extending the effective lifetime of the biocidal phosphate ester when incorporated into a variety of materials including plastics , fibrous materials , and solutions . applications of the disclosed carrier compounds include preparation of mildew resistant paints and plastics having extended antimicrobial properties despite extensive washing and wear of the surface .

a process of amplifying a nucleic acid sequence by a procedure involving a polymerase chain reaction or a ligase chain reaction . the process involves repeated cycles of steps including a nucleic acid denaturing step and a nucleic acid synthesis step , the synthesis step being carried out under the action of an enzyme . the denaturing step and the synthesis step are carried out in different denaturing and synthesis reaction zones , respectively , and , during the repeated cycles , the enzyme is maintained in isolation from the denaturing reaction zone , and conditions or reagents required for the denaturing step are maintained in isolation from the synthesis reaction zone to the extent that the reagents and conditions required for denaturing do not impede the synthesis reaction to a substantial extent . the use of separate zones for the steps of the reactions means that an enzyme that is destroyed or degraded by the reagents and conditions required for denaturing may be used in the reaction . moreover , the use of multiple zones means that inexpensive equipment may be used for the process .

a method for preparing an oxidatively coloring electrochromic layer of composition m y cro 2 + x where m = li , na or k and an electrochromic devise employing this layer with improved transmittance modulation , improved thermal and environmental stability , and improved resistance to degradation in organic liquid and polymeric electrolytes . the m y cro 2 + x provides complementary optical modulation to cathodically coloring materials in thin - film electrochromic glazings and electrochromic devices employing polymeric li + ion conductors .

a coating and method for a coating an implantable device or prostheses are disclosed . the coating includes an undercoat of polymeric material containing an amount of biologically active material , particularly heparin , dispersed therein . the coating further includes a topcoat which covers less than the entire surface of the undercoat and wherein the topcoat comprises a polymeric material substantially free of pores and porosigens . the polymeric material of the topcoat can be a biostable , biocompatible material which provides long term non - thrombogenicity to the device portion during and after release of the biologically active material .

an optical adhesive product and a process for manufacturing an optical adhesive product , laminated film ensembles , and laminated lenses . the optical adhesive product includes a glyoxal water solution that is ph adjusted for use as an optical adhesive that demonstrates a wet peel force strength above about 6 newtons . a water based polymer , such as pvoh , may be added to the adhesive system . according to the process , the glyoxal adhesive system is manufactured and utilized to laminate tac - pva - tac films together to form a polar film ensemble . the polar film ensemble is laminated to an optical substrate and in the case of an ophthalmic lens , surfaced , coated and edged . the optical adhesive product avoids film separation in the polar tac - pav - tac film ensemble during edging .

methods for the identification , production and use of staphylokinase derivatives characterized by a reduced immunogenicity after administration in patients . the derivatives of the invention are obtained by preparing a dna fragment comprising at least the part of the coding sequence of staphylokinase that provides for its biological activity ; performing in vitro site - directed mutagenesis on the dna fragment to replace one or more codons for wild - type amino acids by a codon for another amino acid ; cloning the mutated dna fragment in a suitable vector ; transforming or transfecting a suitable host cell with the vector ; culturing the host cell under conditions suitable for expressing the dna fragment ; and purifying the expressed staphylokinase derivative to homogeneity . preferably the dna fragment is a 453 bp ecori - hindiii fragment of the plasmid pmex602sakb , , the in vitro site - directed mutagenesis is performed by spliced overlap extension polymerase chain reaction and the mutated dna fragment is expressed in e . coli strain tg1 or wk6 . the invention also relates to pharmaceutical compositions comprising at least one of the staphylokinase derivatives according to the invention together with a suitable excipient , for treatment of arterial thrombosis .

in today &# 39 ; s environment , it is becoming increasingly more important to recycle plastics including polyethylene terephthalate . technology available today allows for polyethylene terephthalate to be recycled into a wide variety of useful products . for instance , carbonated beverage bottles which are comprised of polyethylene terephthalate can be recycled into new polyethylene terephthalate beverage bottles . however , a relatively pure polyethylene terephthalate post consumer feed stream is required in many such recycling programs . unfortunately , such feed streams are often contaminated with foreign material . this invention relates to a process for removing foreign materials from a post - consumer polyethylene terephthalate feed stream which comprises : depolymerizing the polyethylene terephthalate feed stream into a melt having a melt viscosity which is within the range of 0 . 001 poise to 1000 poise , feeding the melt into a separation device , allowing low density foreign materials to float to the surface of the melt , allowing high density foreign materials to sink to the bottom of the melt , and removing molten polyethylene terephthalate oligomer from an area which is located intermediately between the surface of the melt and the bottom of the melt .

the present invention relates to a system , method , and composition utilizing a pressure sensitive adhesive and / or thermal sensitive adhesive sheet for adhering sheets of preformed thermoplastic road markings , texture and design patterns to concrete , asphalt , wood or composite material surfaces . these markings may be decorative or legend type markings . the system involving the method of applying the product allows for immediate use in a traffic area upon completion of the application to any of the appropriate outdoor surfaces .

antimicrobial and antifogging polymeric films with preferable a / c / e structure useful for the food , medicine and agriculture applications as well as for other general packaging and non - traditional special applications . more preferably , antimicrobial and antifogging films having a a / b / c / e structure . most preferably , antimicrobial and antifogging films having a a / b / c / d / e structure . a multilayer structure having antifogging and antimicrobial properties / a core layer / an outer layer structure ) for semi and biaxially oriented polyolefin based antifogging films having advantageous properties as compared with known and commercial films such as low values of haze , high values of sheen , lower longitudinal and transverse shrinkage , which provides high dimensional stability , and excellent antifogging and antimicrobial properties . preferably the skin layer , having antifogging and antimicrobial properties , is electrical corona or flame treated . electrical corona or flame treatment of the outer layer may enhance ink anchorage and increase the printability of this layer . preferably , the films comprise an inner layer between the skin layer and the core layer . preferably , the films may comprise a second inner layer between the outer layer and the core layer .

a hybrid metal / composite spinner cone used in aircraft applications . the spinner cone has a metal outer shell which is bonded during the molding process to an inner structural member of thermoplastic composite . the metal shell imparts several desirable characteristics to the spinner cone such as impact resistance , erosion resistance , appearance , and supplying a lightning strike material to protect the composite structure . the thermoplastic composite has significant property advantages over metal or thermoset systems . the hybrid metal / composite spinner cone is manufactured using a ceramic mold which is less expensive and more readily available than a steel mold . the metal shell provides a barrier between the thermoplastic composite and the ceramic mold and allows the finished spinner cone to be easily released from the mold .

a polymeric anticorrosion film having a thermoplastic matrix made with a gradual transition from a nonporous to a porous structure formed by a system of closed and communicating pores filled with an inhibitor liquid with an increasing apparent density to a value equal to the thermoplastic density by 1 / 4 - 2 / 3 of the film thickness in the direction from one of its surfaces .

a process for producing biopolymers comprises passing nitrogen deficient wastewater through a treatment system comprising micro - organisms which grow aerobically in nitrogen deficient wastewater , and controlling the environment in the treatment system by maintaining a sufficiently stable dissolved oxygen level to thereby encourage the growth and / or activity of micro - organisms which produce the biopolymers , and recovering the biomass produced and the biopolymers .

drug delivery composition . the composition includes a polymeric material , a complexing agent , and a bioactive agent complexed with the complexing agent . the polymeric material , the complexing agent and the bioactive agent are formed into a delivery matrix . the delivery matrix is particularly adapted for placement below the gum line in a periodontal cavity .

a combined container and dispenser for liquids such as milk and the like comprises a reusable , rigid case having an open top , and containing a flexible plastic bag filled with liquid , the bag having a dispensing tube extending therefrom near one end of the case to enable dispensing of the liquid by gravity after the case is disposed on its one end in an appropriate dispenser . the case includes a pair of pivotally mounted brackets adapted to be pivoted or folded over the open top of the case into a closed position to retain the filled bag in the case during dispensing of the liquid . when the brackets are in their closed position , overlying the open top of the case , the dimensions of the case correspond to those of the standard disposable bulk milk box that fits within a standard bulk milk dispensing cabinet . when closed the brackets increase the width dimension of the case .

broadly , the present invention is directed to a method for the detection and differentiation of neoplastic tissue in a patient suspected of having neoplastic tissue . the method includes the administration of a radiolabeled somatostatin congener to the patient and accessing the patient with a radiation detection probe for determining tissue exhibiting elevated levels of radiation , viz ., neoplastic tissue . however , before subjecting the patient to such administration , an initial determination preferably is made as to whether the radiolabeled somatostatin congener will bind to the tumor site , i . e ., whether somatostatin receptors are associated with the neoplastic tissue . this is conveniently done with a wide variety of endocrine tumors , which release peptides or hormones , referred to as &# 34 ; biochemical markers . &# 34 ; in order to make this determination , initially a biochemical marker - inhibiting dose of unlabeled somatostatin congener is administered to the patient . the biochemical marker associated with the neoplastic tissue then is monitored to determine whether the administered somatostatin congener reduces the presence of the marker in the patient . if the monitored presence of the marker was reduced , then the surgeon can be confident that the neoplastic tissue or tumor contains receptors to which the somatostatin will bind . thus , the administration of radiolabeled somatostatin congener is appropriate for such patient . if the biochemical marker associated with the neoplastic tissue is not appropriately reduced following the administration of the unlabeled somatostatin congener , then the neoplastic tissue may not be determinable by the use of radiolabeled somatostatin congener and alternative modalities of treatment should be considered , such as the use of radiolabeled antibodies as proposed in u . s . pat . no . 4 , 782 , 840 . if the tumor is of a type that does not release a biochemical marker , the presence of somatostatin receptors can be confirmed by other means , such as pathology , immunohistochemistry , radioreceptor assay , or such other means as will be apparent to those skilled in the art .

a portable , lightweight and inexpensive emergency power pack to be hooked up to the lighting system of a vehicle trailer , such as a semi - trailer , camper , mobile home or the like , for the purpose of flashing all or some trailer lights on and off while the trailer is unhitched on the side of a road so as to warn passing motorists of its presence . the device includes a battery , an on - off switch , a flasher and an illuminating light . the case for supporting the battery and other components is made of a unitary , molded plastic piece , and includes a cylindrical housing on one side thereof that contains an adapter plug for connecting to a mating plug in the vehicle trailer . auxiliary warning lights may also be strung from a special connector on the unit , while an alternate embodiment may be utilized in the shop to test the various electrical systems on the trailers .

in accordance with the present invention , a high intensity radiopaque contrast agent is disclosed . the agent may be coated on or incorporated within bulk materials , which may then be subsequently utilized to fabricate a radiopaque medical device . primary effects through chemistry include higher radiopaque concentrations per unit weight of the radiopaque element or agent . secondary effects include selective placement of the radiopaque elements which may further enhance the radiopacity of the device with reduced requirements of the radiopaque agent . such a radiopaque contrast agent may be produced in various forms such as a dendrimer and / or incorporated as the end groups of polymeric chain . in addition one can incorporate biological and / or pharmaceutical agents in combination with the present invention .

assembly for the continuous plasticising and filtration of materials . the materials include polymers in the pasty , viscous , or molten state , visco - elastic products and proteoleaginous products . the assembly includes two modules , a plasticising module and a degassing and filtration module . a stator accommodates a floating screw and , in succession , a feed zone receiving the material to be plasticised , a homogenization zone , a degassing zone , a zone for the filtration of the non - molten material , and a zone for the outlet of the plasticised material . the portions of the stator which correspond to the various zones are provided with temperature regulating means , formed of a condenser , a heating device , and an annular chamber .

disclosed is a bio - electrospinning technique for preparing a cell - containing , oriented , continuous tubular scaffold , made of biodegradable polymer , designed for use as a nerve guide conduit in nerve regeneration . with a coaxial spinneret , the pc - 12 cell medium solution was co - electrospun into a core of tubular fibers , with pla on the outer shell . the resulted fibers &# 39 ; morphology was characterized via sem and optical microscopy , and following structural characteristics were found : 1 . the larger , hollow fibers had diameters in tenth of microns and wall thicknesses around few microns , 2 . an orientation in a preferred direction with the aid of a high - rotating collection device . the fluorescent pc12 cells embedded within the scaffold were cultured and nerve growth factor was added . we observed cells could not only survive the process , but also sustain their viability by undergoing differentiation process , extending neurite along the micro tubular scaffold in the desired direction . all these results demonstrate its potential application for advanced ngc .

a structural reinforcing member for motor vehicle wind deflectors has a shaped configuration with at least one curved portion , and a plurality of mutually spaced apart , plastically formed deformation sections which provide structural rigidity to maintain the shaped configuration and geometry of the reinforcing member .

this invention deals with an absorbable , gel - forming composition for multifaceted prevention of post - operative surgical adhesion through a plurality of physico - pharmacological modes , comprising a solution of one or more bioactive compounds in a liquid copolymeric vehicle made by end - grafting one or more cyclic monomer onto a polyalkylene glycol . more specifically , the bioactive drugs can display one or more pharmacological activity associated with antiangiogenic , antineoplastic , anti - inflammatory , and anti - proliferative effects .

the objective of the present invention is to provide a bacterium for producing polyhydroxyalkanoate with improved productivity . to achieve above objective , the gene coding for the polyhydroxyalkanoate depolymerase of the bacterium for producing polyhydroxyalkanoate is disrupted to improve the productivity of polyhydroxyalkanoate .

a hose suited for use in clean rooms has a minimum bend radius that is flexible without kinking . the hose includes a germ and bacteria resistant smooth outer surface and is constructed form a low modulus rubber type matrix with primary reinforcement layers laid at optimal opposing angles around a thin walled thermoplastic liner and similarly a secondary reinforcement layer of wire is utilized .

the disclosure pertains to various embodiments of zippers with a tear flange for use in a reclosable flexible package or bag . a line of weakness can be introduced into the tear flange by application of a peel seal polymer resin or of a foaming agent . the disclosure includes further embodiments wherein lines of weakness are introduced into the flange of zippers in reclosable packages or bags .

a package is disclosed containing a picture postcard and a utilitarian item , both the postcard and the telephone card bearing the same illustration . the package is of transparent plastic for simultaneous viewing of both the postcard and the utilitarian item . the postcard can be removed and mailed the same as any souvenir card and the utilitarian item can be separately employed and / or displayed .

a process for the hot press moulding of moulded articles , such as the internal linings of motor vehicles or the like is described , in which planar blanks of tangled fibre mat fleece mixed with binders , using at least one mould , are permanently deformed in a multidimensional moulding process after evaporating on the mat fleece . a stabilizing support is introduced during the deformation process on at least one side between the shaping surface of the mould and the mat fleece . it is in the form of a fibrous sandwich layer which is substantially elongation - free in the surface direction at ambient temperature , but is plastically deformable within the hot press mould under the action of heat . with and / or immediately after the moulding process , said stabilization support becomes a substantially elongation - free , inflexible covering . the geometry of the flexible stabilizing support is to be made to coincide with that of the mat fleece blank to be deformed .

the invention relates to a white , biaxially oriented film which comprises a crystallizable thermoplastic as main componet and is characterized by further comprising at least one uv - stabilizer , at least one white pigment and at least one flame - proofing agent , which is soluble in the thermoplastic and introduced directly , during the film production , by masterbatch technology , whereby the masterbatch is pre - conditioned by gradual heating under reduced pressure and with stirring .

a polyolefin graft polyamide composition incorporating lamellar nanofillers . also , a tube , pipe or analogous formed from a multilayer at least one of the layers of which contains this composition . a thermoplastic composition having a polyolefin backbone containing a residue of at least one unsaturated monomer and a plurality of polyamide grafts , and also another component , wherein : the polyamide grafts are attached to the polyolefin backbone by the residue of the unsaturated monomer comprising a function capable of reacting via a condensation reaction with a polyamide having at least one amine end group and / or at least one carboxylic acid end group , the residue of the unsaturated monomer is attached to the backbone by grafting or copolymerization , wherein the other component consists of platy nanofillers , said nanofillers being phyllosilicates and representing from 1 % to 6 . 5 % by weight of the composition .

a process is disclosed for direct extrusion of an acrylic polymer highly filled with aluminum trihydroxide wherein a lubricant is introduced to permit the composition to be extruded at a temperature below about 200 ° c .

a cd or dvd tray made from paperboard is provided . the tray may be made from 100 % recycled paperboard and can be 100 % recyclable . the design of the tray or holder uses the structural geometry of facets , central hole and radial slits to form a hub that achieves the function of securing the cd to the tray . non - structural paper stock is formed into an effective fastening device whereby the fit of the hub is determined by the geometry of the folded paper . the paper tray of the present invention duplicates the functionality of plastic trays and is compatible with industry auto - loading , while providing the environmental benefits of paper .

an improvement for use with a stretch wrapping apparatus that applies stretchable plastic film to a basiloid container type load . the improvement comprises a roping device that gathers the plastic film into an elongated continuous band engageable on the basiloid container in the required configuration .

a drug eluting medical device is provided for implanting into vessels or luminal structures within the body of a patient . the coated medical device , such as a stent , vascular , or synthetic graft comprises a coating consisting of a controlled - release matrix of a bioabsorbable , biocompatible , bioerodible , biodegradable , nontoxic material , such as a poly polymer , and at least one pharmaceutical substance , or bioactive agent incorporated within the matrix or layered within layers of matrix . in particular , the drug eluting medical device when implanted into a patient , delivers the drugs or bioactive agents within the matrix to adjacent tissues in a controlled and desired rate depending on the drug and site of implantation .

a temperature control system for a hot nozzle is used in a runner - less molding process of a plastic by an injection molding machine . the control system includes first and second temperature detecting devices for detecting the temperature of the hot nozzle at the front end of the hot nozzle and at a position upstream of the front end , respectively . control signal outputting units compare the temperature detected by the first and second temperature detecting devices with a first set temperature and a second set temperature , respectively . based on the temperature differences , first and second control signals corresponding to the temperature differences are calculated and are outputted from the control signal outputting units to a power supply unit which is connected to a power source for regulating the power for heating the hot nozzle . a switch is connected between the control signal outputting units and the power supply unit and is operable to selectively supply either one of the first and second temperature control signals to the power supply unit according to the molding cycle .

the present invention relates to polymeric compositions useful in the manufacture of biocompatible medical devices . more particularly , the present invention relates to certain hydrophilic monomers capable of polymerization to form polymeric compositions having desirable physical characteristics useful in the manufacture of ophthalmic devices . the polymeric compositions comprise polymerizable hydrophilic siloxanyl monomers .

transducer - protector device for biomedical haemodialysis lines comprising a first and a second element each of which is formed in a single piece of moulded plastic material with a tubular fitting and an annular radial flange . the first element is formed with a semi - crystalline polymer and the related annular radial flange has greatly thinner portions able to allow the see - through viewing of the filtering membrane secured between the flanges of the first and of the second element .

the invention concerns composites with excellent barrier properties to gases and water vapor . such composites can be used , e . g ., in foodstuff packaging or as technical membranes . the outstanding barrier effect is achieved by arranging on a substrate material , which , for example , may consist of biodegradable polymers , at least two films . at least one of these films consists of an organic - inorganic hybrid polymer , at least one further film of a further barrier material or of a substrate material .

this invention describes photopolymer printing plate developing solvents comprising diisopropylbenzene , alone or in combination with one or more co - solvents . compared with solvents of the prior art , the developing solvents of the present invention have lower toxicity , higher flash points , a milder and more pleasant odor , increased resistance to thermal decomposition , higher solvency , faster dry time , and pose reduced threat to the environment . the solvents of the present invention can exhibit azeotropic - like properties resulting in improved recycling characteristics and reduced drying times . also , the solvents of the present invention exhibit a degree of selective solvency towards non - crosslinked photopolymers vs . crosslinked photopolymers that is not seen in solvents of the prior art .

a method of making a radially expandable fluid delivery device includes providing a tube of biocompatible fluoropolymer material with a predetermined porosity based on an extrusion and expansion forming process , applying a radial expansion force to the tube expanding the tube to a predetermined diameter dimension , and removing the radial expansion force . the tube is radially inelastic while sufficiently pliable to be collapsible and inflatable from a collapsed configuration to an expanded configuration upon introduction of an inflation force , such that the expanded configuration occurs upon inflation to the predetermined diameter dimension . the fluid delivery device is constructed of a microporous , biocompatible fluoropolymer material having a microstructure that can provide a controlled , uniform , low - velocity fluid distribution through the walls of the fluid delivery device to effectively deliver fluid to the treatment site without damaging tissue proximate the walls of the device .

the present invention relating to an exothermic decomposition has , as essential components , a water absorptive polymer and / or tackifier , carbon component and / or metal chloride and features that the product is as a whole ink - like or cream - like .

a continuous or ring - shaped printing ribbon is constructed by overlapping the ends of a length of ribbon made of thermoplastic synthetic material and welding the overlapped ends together along a grid work of fine weld lines , thereby providing a weld joint comprising a punctiform arrangement of ink - bearing cells to effect an undisturbed emission of ink across the joint during a printing operation .

in a seat sliding device comprising a stationary rail , a movable rail slidable on and along the stationary rail to carry a seat , and a plastic slide block moulded on the movable rail in a manner to be disposed between these two rails to improve the sliding characteristics of the movable rail relative to the stationary rail , there is proposed a measure in which the slide block is divided into two sections in the longitudinal direction of the movable rail , leaving a predetermined clearance between the two sections .

disclosed is an improved viscous , aqueous , hydrophilic polymer - containing fluid suitable for injection into porous media such as subterranean petroleum - containing earth formations and an oil recovery method in which the aqueous fluid is injected into the subterranean petroleum - containing formation . the fluid contains an effective amount of an aromatic treating substance , preferrably benzene , toluene , xylene , and low alkyl - substituted benzene or toluene . the improvement resulting from incorporation of this additive in the polymer fluid includes greatly increased resistance to microbial degradation of the polymer , improved screen factor , and improves the injectivity of the fluid .

a method of producing high modulus and high strength products of polyethylene and other thermoplastic polymers by swelling with a suitable solvent a melt crystallized , or compacted powder morphology to form a pseudo - gel , drying the pseudo - gel , compressing it , and drawing it . the optimum process involves swelling the initial morphology in the form of a tape / ribbon / rod / monofilament / sheet / tube in a non - volatile solvent at temperatures near the polymer crystalline melting point , cooling the morphology under controlled conditions , lightly compressing it to remove the non - volatile solvent , extracting the non - volatile solvent by volatile solvent , removing the volatile solvent by evaporation or vacuum , compressing the morphology between rolls , and then stretching it at temperatures below the crystalline melting point of the polymer to obtain tapes , ribbons , monofilaments , sheets or tubes with improved mechanical properties . products from the method include improved dental floss , fishing line and numerous other applications .

the present invention is directed to the treatment of small abdominal aortic aneurysms by the implantation of a polymeric , biodegradable device incorporating an anti - aneurismal effective amount of a mmp inhibitor . the present invention is further directed to the polymeric , biodegradable implantable device produced from a biodegradable , polymeric material having an anti - aneurismal effective amount of a mmp inhibitor incorporated therein . not only can the treatment in accordance with the present invention prevent the inception and growth of aneurysms , it can also induce regression of established aneurysms .

polymer - based biomaterials are popular due to ease of fabrication and low costs . however , many polymer substrates have undesirable surface properties . the invention provides a procedure to covalently apply a graft polymer to the surface of a polymer substrate by ultraviolet graft polymerization . the graft polymer is formed from monomers such as peg , aa , monomethoxy acrylate peg , hema , or dma . also , mixed monomers may be used to create the graft and the surface properties of the graft may be tailored for different properties , including hydrophobicity , friction coefficient , electroosmotic mobilities and electrophoretic separations . the invention has particular utility in tailoring surface chemistries in ocular lenses and polymer microdevices . i . ii . r : — oh acrylic acid — nh 2 acrylamide — n 2 dimethylacrylamide — och 2 ch 2 oh 2 - hydroxyethylacrylate — o n ch 3 peg monomethyoxylacrylate

an improved composite sheet material product having the appearance , drape , hand and water absorption and retention characteristics of natural chamois leather , comprising , in combination , a reinforcing textile fabric having opposed raised fiber faces , a soft water - absorbent porous polymeric foam layer secured to the opposed raised fibrous faces of the textile fabric , the foam layers having a normal high surface tack characteristic causing sticking and delamination of the layers from the sheet material under pressure contact , and wherein the exposed porous surfaces of the normally tacky foam layers are coated with a non - tacky water insoluble , film - forming polymer , such as a urethane polymer , to minimize tackification and delamination of the foam layers without noticeable loss in water absorption , retention , and appearance of the composite sheet material to that of natural chamois leather . also disclosed is a method of manufacture of such composite sheet material products .

the polymerase chain reaction is one of the most widely used techniques in molecular biology . in general , most thermocyclers which automate the pcr nucleic acid amplification process rely upon programmable heat blocks with a large thermal mass . consequently , most of the time in an automated pcr cycle is spent non - productively in transition between denaturation , annealing , and elongation temperatures . recently , much faster hot - air thermocyclers have been constructed which shorten these transition times , allowing 30 cycles of pcr in 10 to 30 minutes . while elegant in principle , the design of these systems is not optimal . air is a relatively poor heat transfer medium ; and the operation of a single heat / reaction chamber at atmospheric pressure is inherently slow . much faster thermocyclers can be constructed using pressurized gas delivered to a thermostated reaction chamber by computer - controlled electronic valves . a novel process , high - speed gas phase pcr , is described . this process has been successfully automated using a novel thermocycing device , which has been successfully to amplify dna from picogram to microgram amounts in ˜ 1 to 5 minutes .

a method of preparing a plastic - based composite profile comprised of a plastic mass containing a plurality of wood particles embedded in the plastic mass by bringing a plurality of dried wood particles and a thermoplastic polymer together with optional additives together to form a plastic - wood particle mixture , blending the plastic - wood particle mixture in blending means at a temperature sufficiently high to at least partially melt the thermoplastic polymer so as to be capable of uniformly blending with the wood particles to form a blended plastic - wood particle mass constituting an initial agglomerate ; transforming the initial agglomerate into a profile preform by subjecting the agglomerate to the action of a double screw multi - zone extrusion means thereby shaping the profile preform into a profile by pushtrusion so that the agglomerate flows under pressure as a plastic plug flow in the extrusion means and through orientation and shaping stages to thereby obtain the composite profile .