Polyurethane two-component lacquers

Details Polyurethane two-component lacquers Polyurethane two-component lacquers

C - Chemistry, Metallurgy

08

L

400/7420

C08L 75/04 (2006.01) C08G 18/10 (2006.01) C08G 18/42 (2006.01) C08G 18/46 (2006.01) C08G 18/75 (2006.01) C08K 5/16 (2006.01) C09D 175/06 (2006.01)

Patent

CA 1043036

ABSTRACT OF THE DISCLOSURE Polyurethane two-component lacquers are disclosed which have high activity for coating various substrates, the lacquers comprising (1) a lacquer solvent, (2) the reaction product of 3-isocyanatomethyl-3,5,5- trimethylcyclohexyl-isocyanate with branched chain polyesters having terminal hydroxyl groups and being obtained from mixtures of aliphatic and aromatic dicarboxylic acids, 15-85 mol % of the dicarboxylic acids being aliphatic with the remainder aromatic acids, wherein the polyester and isocyanate are reacted in quantities so that there are two isocyanate groups per OH group, the reaction being carried out in the absence of catalytic additives at 10 - 35°C and (3) an aldimine of the general formula; Image wherein R denotes the same or different alkyl groups.

200427

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