Water-based physically drying coating agents, manufacture...

Details Water-based physically drying coating agents, manufacture... Water-based physically drying coating agents, manufacture...

C - Chemistry, Metallurgy

09

D

C09D 175/06 (2006.01) C08G 18/12 (2006.01) C08G 18/28 (2006.01) C08G 18/44 (2006.01) C09D 175/04 (2006.01)

Patent

CA 2068167

A b s t r a c t : The description relates to physically drying water-based coating agents. They contain water, metallic pigments, optional other pigments, neutralising agents, conventional additives, small proportions of solvents and a binder mixture consisting of A) 50 to 90 wt.% polyurethanes with carbonate groupings and a number average molecular weight of 70000 to 500000 based on reaction products of polyisocyanates with polyhydroxyl compounds, with a content of polyhydroxy polycarbonates and B) 10 to 50 wt.% of carboxylic acid ester groups containing polyurethanes with a number average molecular weight of 20000 to 100000. They are particularly suitable for manufacturing metallic lacquers for repairs in the motor vehicle sector.

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