FIELD OF THE INVENTION

The present invention relates to curable compositions that comprise reactive functional compounds and polysiloxane resins. The present invention also relates to articles of manufacture and coated articles comprising the curable compositions, as well as methods of mitigating dirt build-up on a substrate.

BACKGROUND OF THE INVENTION

Curable compositions are often used as articles of manufacture and coatings in a wide variety of industries. Such industries may include but are not limited to landcraft such as cars, trucks, sport utility vehicles, motorcycles; watercraft such as boats, ships and submarines; aircraft such as airplanes and helicopters, industrial such as commercial equipment and structures including walls and roofs; construction such as construction vehicles and structures including walls and roofs, military such as military vehicles, and military structures including walls and roofs, for example, ammunition cases and battery enclosures; architectural components such as siding, flooring, interior and exterior trim, and the like.

In these industries, coatings serve a variety of purposes such as protecting various components against damage due to corrosion, abrasion, impact, chemicals, ultraviolet light, flame and heat, and other environmental exposure. Accordingly, considerable efforts have been made to develop coating compositions with improved properties.

Curable compositions can also be used in the footwear industry. Footwear, such as a shoe, is generally divided into two parts, an upper and a sole. The upper is the portion of the footwear designed to comfortably enclose the foot, while the sole, which typically includes an insole, optionally a midsole, and an outsole, is the portion of the footwear designed to provide traction, protection, cushioning, and a durable wear surface.

The sole often includes different components made of different materials. Midsoles are typically made of foam, such as ethylene vinyl acetate (EVA) foam or polyurethane, such as TPU, foam. These materials compress resiliently under an applied load, such as the forces generated by the feet and legs during physical activity. Outsoles are often made of synthetic and/or natural rubbers, such as silica-filled rubber compositions. The outsole can also experience dirt pick-up during normal use of a shoe, affecting the aesthetics.

Easy cleaning of surfaces is a significant selling point in many industries, in both consumer and industrial markets. Easy removal of dirt and prevention of dirt build-up are desirable properties for products as diverse as automobiles and shoes. Environmental contaminants such as tar, asphalt, animal droppings, road salt, detergents, dirt, clay, and the like may damage the surface of coated vehicles, architectural surfaces, and other industrial and consumer substrates. Damage may be caused by a chemical reaction of the contaminant with the coated surface such as by chemical etching, or may involve physical removal of part or all of the coating from the substrate (i. e., “cohesive failure”) upon removal of the contaminant during cleaning. Cohesive failure may also involve incomplete removal of the contaminant from the coated surface during cleaning.

It would be desirable to provide polymers and coating compositions that may be used to mitigate dirt build-up on a substrate in order to alleviate aesthetic decline and damage to coatings.

SUMMARY OF THE INVENTION

The present invention provides a curable composition comprising:

(A) a binder composition comprising one or more of:

i) a) an isocyanate functional compound and b) an amine functional compound;

(ii) a) an acid-functional compound and b) an epoxide functional compound;

(iii) a) an ethylenically unsaturated compound and b) an amine functional compound;

(iv) a) an isocyanate functional compound and b) a thiol functional compound;

(v) a) cyclic carbonate functional compound and b) an amine functional compound;

(vi) a) an acetoacetate functional compound and b) an amine functional compound;

(vii) a) an epoxide functional compound and b) an amine functional compound;

(viii) a) a thiol functional compound and b) an ethylenically unsaturated compound;

(ix) a) an ethylenically unsaturated compound and b) a malonate functional compound;

(x) a) an epoxide functional compound and b) a thiol functional compound; and

(xi) one or more ethylenically unsaturated compounds; and

(B) a polysiloxane resin comprising aromatic functional groups and terminal active hydrogen groups.

