Patent ID: 6646049
Filing Date: 2003-11-11
Classification: C08G,C09D,Y10S

Abstract:
A binder comprising:a. a principal resin polyol comprising at least one of a polyester polyol, a polyether polyol, and a polyacrylate; b. a hyperbranched polyol comprising both external and partially embedded hydroxyl groups in the structure thereof; and c. a crosslinker, wherein the hyperbranched polyol comprises I. a central nucleus comprising a hydrocarbon structure with a plurality of oxygen atoms; II. a first chain extension attached to the central nucleus, the first chain extension being formed from a compound comprising a carboxyl group and a plurality of hydroxyl groups; III. an intermediate substituent attached to the first chain extension, the intermediate substituent being formed from a compound comprising at least one of polyfunctional carboxylic acids and anhydrides and corresponding polyacids thereof; and IV. a second chain extension attached to the intermediate substituent, the second chain extension being formed from a compound comprising at least one of cis 2,3-epoxybutane, 1-2-epoxybutane, 1-2-epoxyhexane, 1-2-epoxydecane, cis-7,8-epoxy-2methyloctadecane, and hexafluropropylene oxide.