Abstract:
This invention relates to a curable composition comprising a solvent solution of a mixture comprising: (i) at least one hydroxy-functional acrylic polymer having a Tg of about 25° C. or lower; and (ii) at least one hydroxy-functional polyester having a Tg of 0° C. or lower; (iii) at least one polyisocyanate having an average functionality of ≧4; (iv) a metal catalyst, such as a tin compound, for accelerating the isocyanate/hydroxyl reaction; and (v) optionally a pot-life extending amount of propionic acid.
Abstract:
A method for refinishing a damaged area of a substrate, such as an existing finish on a vehicle which includes the steps of preparing a damaged area for refinishing, by cleaning and/or sanding, providing a multi-component coating composition which includes at least two components having functional groups reactive with each other in a crosslinking reaction and spreading the coating composition onto the area to be refinished using a squeegee applicator.
Abstract:
A polyurethane coating composition, sprayable onto a substrate by means of conventional spray equipment at pressures of less than about 100 psi and at temperatures of between ambient to about 50° C., in one or more layers to a film thickness of up to about 30 mils, comprises a resin component having hydroxyl functionality, which may be substantially free of amine functionality, an isocyanate functional curing component, an organotin catalyst, and a catalyst inhibiting amount of a volatile organic acid. The composition may optionally include a fibrous reinforcing material, and a colorant. Advantageously, the coating compositions of the present invention provide polyurethane films having excellent physical properties, solvent and UV resistance, and adhesion to clear coated substrates without the need for adhesion promoting primer coats or chemical pretreatments. The compositions are particular useful to form sprayable vehicle bedliners.
Abstract:
This invention relates to a curable composition comprising a solvent solution of a mixture comprising: (i) at least one hydroxy-functional acrylic-polymer; and (ii) at least one low molecular weight polyol reactive diluent; (iii) at least one polyisocyanate; (iv) a metal catalyst, such as a tin compound, for accelerating the isocyanate/hydroxyl reaction; and (v) propionic acid.
Abstract:
This invention relates to a curable composition comprising a solvent solution of a mixture comprising: (i) at least one hydroxy-functional acrylic-polymer; and (ii) at least one low molecular weight polyol reactive diluent; (iii) at least one polyisocyanate; (iv) a metal catalyst, such as a tin compound, for accelerating the isocyanate/hydroxyl reaction; and (v) propionic acid.
Abstract:
A method for refinishing a damaged area of a substrate, such as an existing finish on a vehicle which includes the steps of preparing a damaged area for refinishing, by cleaning and/or sanding, providing a multi-component coating composition which includes at least two components having functional groups reactive with each other in a crosslinking reaction and spreading the coating composition onto the area to be refinished using a squeegee applicator.