Use of water-based carbonyl-functional polymers on a cross-linker-free highperformance leather finish
The present paper aims to study a new high-performance coating formulation while avoiding the use of cross-linkers. 
By using acrylic polymers with carbonyl functional groups, the negative environmental effects of the finishing process can be minimized. These new polymers can give very good physical properties without losing the inherent properties 
of flexibility and elasticity needed in upholstery leather
Cross-linked polymers for aqueous finishing. Binders crosslinked with polyaziridine: Part II Acrylic Binders
Due to the current stringent regulations regarding emissions into the environment, coating recipes commonly used in leather finishing comprise water-based products. However, in order to obtain the physical properties required for most leather goods, the use of reactive cross-linkers is needed. The present study aims to look into the behaviour of acrylic binders cross-linked with polyaziridine: the amount of cross-linker used, the type of polymer employed, the type of tannage and retannage and the evolution of the reaction over time. A comparison of results shows that the type of tannage and retannage, as well as the physical characteristics of the acrylic binder used are influential factors in the behaviour of acrylic binders cross-linked with polyaziridine. Different amounts of polyaziridine are needed with regard to the type of tannage and retannage and to the physical characteristics of the acrylic binder used.
Composite monolayer fabrication by an arc-spray process
A single layer (monotape) technique for fabricating complex high-temperature tungsten-fiber-reinforced superalloy composites is proposed. The fabrication of sheets of arc-sprayed monotape 38 cm wide and 122 cm long has been demonstrated. Composites fabricated using the method are shown to have equal tensile strength and a cleaner matrix than composites fabricated from powder metal cloth monotapes, and the present technique is less expensive than the powder metal fabrication techniques.