Patent ID: 6242530
Filing Date: 2001-06-05
Classification: C08G

Abstract:
A (cyclo)aliphatic polyisocyanate composition which has a content of blocked and unblocked isocyanate groups (calculated as NCO) of 5 to 25 wt %, in which at least 95% of the isocyanate groups are present in a form blocked with a blocking agent comprising a member selected from the group consisting of butanone oxime, diisopropyl amine, 1,2,4-triazole, imidazole, malonic ester, acetoacetic ester, dimethyl pyrazole and .epsilon.-caprolactam, and wherein the composition also contains the following stabilizing compounds:A) 0.1 to 5.0 wt %, based on the weight of the composition, of one or more amines having a structural unit corresponding to formula (I) ##STR8##which does not contain any hydrazide structure,B) optionally 0.1 to 8.0 wt %, based on the weight of the composition, of one or more hydrazides having a structural unit corresponding to formula (II) ##STR9##andC) 0 to 5.0 wt %, based on the weight of the composition, of one or more stabilizers other than A) and B).