Patent ID: 6410646
Filing Date: 2002-06-25
Classification: C09D

Abstract:
A coating composition that has, after curing, a storage modulus Eâ€² in a rubber-elastic range of at least 107.5 Pa and a loss factor tan&dgr; at 20Â° C. of at least 0.05, the storage modulus Eâ€² and the loss factor tan&dgr; having been measured by dynamic mechanical thermoanalysis on homogeneous free films having a film thickness of 40Â±10 &mgr;m; and said coating composition comprises:at least one binder comprising at least one polyacrylate resin having a hydroxyl number of from greater than 200 to 240, an acid number of from 0 to 35 and a number-average molecular weight of from 1500 to 10,000; a crosslinker consisting of a compound selected from the group consisting of free isocyanates, blocked isocyanates, triazine-based components, and mixtures thereof wherein the triazine-based component crosslinks with hydroxyl groups of the binder to form at least one of an ether and an ester structure; and wherein when a triazine-based component is present in the coating composition, the polyacrylate resin further comprises in its reaction product at least one ethylenically unsaturated carboxylic acid.