Patent ID: 6638578
Filing Date: 2003-10-28
Classification: C09D,Y10T

Abstract:
A thermosetting composition comprising a co-reactable solid, particulate mixture of:(a) beta-hydroxyalkylamide crosslinking agent; (b) polycarboxylic acid functional polymer prepared by atom transfer radical polymerization initiated in the presence of an initiator having at least one radically transferable group, and in which said polymer contains at least one of the following polymer chain structures: -[(M)p-(G)q]x- and-[(G)q-(M)p]x- â€ƒwherein M is a residue, that is free of carboxylic acid functionality, of at least one ethylenically unsaturated radically polymerizable monomer; G is a residue, that has carboxylic acid functionality, of at least one ethylenically unsaturated radically polymerizable monomer; p and q represent the number of residues occurring in a block of residues in each polymer chain structure; and p, q and x are each individually selected for each structure such that said active polycarboxylic acid functional polymer has a number average molecular weight of from 250 to 16,000; and (c) a second polycarboxylic acid functional material selected from the group consisting of C4 to C20 aliphatic dicarboxylic acids, polymeric polyanhydrides, polyesters, polyurethanes and mixtures thereof.