C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 175/04 (2006.01) C08G 18/09 (2006.01) C08G 18/24 (2006.01) C08G 18/42 (2006.01) C08G 18/62 (2006.01) C08G 18/79 (2006.01) C08J 5/04 (2006.01)
Patent
CA 2633871
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.
Li Zhicheng
Staunton Thomas J.
Tang Weilin
Kirby Eades Gale Baker
The Sherwin-Williams Company
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