Two-component coating compositions for motor vehicle repair...

Details Two-component coating compositions for motor vehicle repair... Two-component coating compositions for motor vehicle repair...

C - Chemistry, Metallurgy

09

D

C09D 175/04 (2006.01) C08G 18/32 (2006.01) C08G 18/38 (2006.01) C08G 18/40 (2006.01) C08G 18/62 (2006.01) C08G 18/65 (2006.01) C08G 18/78 (2006.01) C08G 18/79 (2006.01)

Patent

CA 2048444

The present invention relates to an improved process for repairing a motor vehicle by applying a coating composition wherein improvement is the use of a binder containing a) a polyisocyanate component and b) a mixture of organic compounds having isocyanate-reactive groups containing b1) a secondary diamine corresponding to formula I Image and b2) a polyhydroxyl component containing (i) a polyhydroxypolyacrylate or (ii) a mixture of such polyhydroxypolyacrylate with up to 95% by weight, based on the weight of (ii), of a polyester polyol, wherein components b1) and b2) are present in a weight ratio of 0.7:1 to 20:1 and components a) and b) are present in an amount which corresponds to an equivalent ratio of isocyanate groups of component a) to isocyanate-reactive groups of component b) of 0.8:1 to 1.5:1.

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