Patent ID: 6583223
Filing Date: 2003-06-24
Classification: C08F

Abstract:
A thermosetting coating composition comprising:(a) a first reactant having functional groups; (b) a second reactant having functional groups that are coreactive with the functional groups of said first reactant; and (c) a block copolymer flow control additive comprising: (i) a first block comprising residues of a first radically polymerizable (meth)acrylate monomer selected from at least one monomer represented by the general formulas: â€ƒwherein R1 is selected independently for each general formula from hydrogen, methyl and ethyl; R2 is selected independently for each general formula from the group consisting of linear, branched, cyclic, aryl and arylalkyl fluorinated hydrocarbon groups containing from 4-20 carbon atoms, a siloxane, a polysiloxane, an alkyl siloxane, an ethoxylated trimethylsilyl siloxane and a propoxylated trimethylsilyl siloxane; Y is a divalent linking group containing from 1 to 20 carbon atoms; m is an integer from 1 to 4; and R3 is a C1-C4 alkyl group; and (ii) a second block comprising residues of a second radically polymerizable ethylenically unsaturated monomer that is free of hydroxyl groups and amine groups; wherein said first block and said second block are different from each other, and said block copolymer is prepared by controlled radical polymerization and has a polydispersity index of less than 2.5.