Coating compositions containing aldimines and polyisocyanates

Details Coating compositions containing aldimines and polyisocyanates Coating compositions containing aldimines and polyisocyanates

C - Chemistry, Metallurgy

09

D

C09D 175/04 (2006.01) C07C 251/08 (2006.01) C07C 251/18 (2006.01) C08G 18/32 (2006.01) C08G 18/50 (2006.01) C08G 18/72 (2006.01) C08G 18/78 (2006.01) C09D 175/00 (2006.01)

Patent

CA 2138229

The present invention is directed to coating compositions which have long pot lives and may be rapidly cured under ambient conditions wherein the binder contains a) a polyisocyanate component containing i) 5 to 100 % by weight of a monoallophanate and ii) 0 to 95% by weight of another polyisocyanate adduct, and b) an aldimine based on the reaction product of diamino dicyclohexyl methane with an aldehyde corresponding to the formula: O=CHCH(R1)(R2) wherein R1 and R2 may be the same or different and represent optionally substituted hydrocarbon radicals, or R1 and R2 together with the .beta.-carbon atom form a cycloaliphatic or heterocyclic ring.

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