Patent ID: 6818697
Filing Date: 2004-11-16
Classification: C08F,C09D

Abstract:
A coating composition comprising a bimodal aqueous emulsion copolymer, wherein said bimodal copolymer comprises as polymerized units from 0.1% to 10% by weight, based on the dry weight of said copolymer, of a compound selected from the group consisting of at least one strong acid monomer, and salts thereof;wherein said copolymer comprises small mode particles having a diameter of from 50 to 150 nm; wherein said copolymer comprises large mode particles having a diameter of less than 400 nm, and said large mode particles are larger in diameter than said small mode particles; and wherein the ratio of said small mode particles to said large mode particles is from 10:90 to 90:10 by weight.