Patent ID: 6765056
Filing Date: 2004-07-20
Classification: C08G,C09D

Abstract:
An aqueous-based cross-linkable binder composition comprising(A) an aqueous dispersion of an aldehyde-functional polyurethane having a number average molecular weight of more than 1,000 and an average aldehyde functionality of &gE;2, which polyurethane comprises ionic and/or non-ionic dispersing groups, and (B) a low-molecular weight aldehyde-reactive cross-linker selected from the group of low-molecular weight polyamines, and low-molecular weight compounds comprising at least one group of one of the formulae E1â€”CHR1â€”E2 and Hâ€”Câ€”(E1E2E3), wherein â€”E1, â€”E2 and â€”E3 are independently chosen from electron-withdrawing groups and wherein R1 has the meaning of hydrogen or a hydrocarbon radical having 1 to 10 carbon atoms.