Patent ID: 6013733
Filing Date: 2000-01-11
Classification: C09D,Y10T

Abstract:
A curable coating composition comprising:(I) from 80 to 99.99 percent by weight based on solids of the curable coating composition of at least one film-forming resinous material, and(II) from 0.01 to 3 percent by weight based on total resin solids of the curable coating composition of a functional, nongelled flow control copolymer having a calculated T.sub.g of less than 0.degree. C., wherein the functionality is selected from the group consisting of amino, and amino and hydroxyl, and wherein the copolymer is selected from the group consisting of:(A) copolymer prepared from polymerizing polymerizable ethylenically unsaturated monomers comprising:(1) 40 to 99 percent by weight of the copolymer of at least one non-amino, non-hydroxyl and non-acid functional alkyl acrylate or methacrylate containing from 1 to 20 carbon atoms in the alkyl group, and(2) functional monomers selected from the group consisting of:(a) one or more amino functional monomers selected from the group consisting of amino functional acrylates, amino functional methacrylates and mixtures thereof in an effective amount to give an amine value for the copolymer in the range of about 2 to about 70; and(b) one or more amino functional monomers selected from the group consisting of amino functional acrylates, amino functional methacrylates and mixtures thereof in an effective amount to give an amine value for the copolymer in the range of about 2 to about 70 and one or more hydroxyl functional monomers in an effective amount so that the hydroxyl number of the copolymer is from 0 up to 100; and(B) copolymer prepared from polymerizing polymerizable ethylenically unsaturated monomers comprising: (A)(1) monomers with an acrylate or methacrylate monomer having precursor functionality and where the copolymer is post-reacted with a compound selected from the group consisting of phosphoric acid so that the acid number of the copolymer is in the range of 10 to 30 and amines so that at least the amine value of the copolymer is in the range of about 2 to about 70.