Patent ID: 8216358
Filing Date: 2012-07-10
Classification: C08G,C09D

Abstract:
1. A self-crosslinking binder for coating compositions comprising an aqueously dispersed resinous component A having at least one carbonyl group of the ketone or aldehyde type per molecule, and a component B having at least two hydrazine or hydrazide groups per molecule, and at least one structural unit where the radicals R 1 and R 2 are each individually selected from the group consisting of a hydrogen radical, and a linear or branched alkyl radical having from 1 to 10 carbon atoms; R 3 and R 4 are each individually selected from the group consisting of a hydrogen radical, a linear or branched alkyl radical having from 1 to 10 carbon atoms, aryl and alkylaryl radicals having from 6 to 15 carbon atoms, and from oxyalkyl radicals with from 1 to 10 carbon atoms where oxy groups are optionally inserted into the alkyl chain, or at the end of an alkyl; and R 5 is selected from the group consisting of a hydrogen radical, alkyl radicals which are linear, branched or cyclic and have from 1 to 10 carbon atoms, and residues of the formula —(CH 2 ) n —CO—O—X, where n is an integer of from 1 to 6, and X is the residue of a polyhydric alcohol or phenol.