Patent ID: 9688800
Date: 2017-06-27
CPC Classifications: C08F,C09D

Claim:
1. An aqueous latex composition comprising latex particles comprising a first phase polymer, and a second phase polymer, wherein the first phase polymer is polymerized from a first set of monomers comprising at least about 95 wt. % of one or more acrylic monomers in the first phase polymer; and the second phase polymer is polymerized from a second set of monomers comprising at least one acrylic monomer, at least one vinyl monomer and from about 0.5 wt. % to about 6 wt. % of a crosslinkable monomer in the second phase polymer; wherein the second phase polymer comprises from about 50 wt. % to about 95 wt. % based on the total weight of the polymers in the latex particles; and wherein the crosslinkable monomer is selected from the group consisting of diacetone acrylamide, diacetone methacrylamide and acetoacetoxyethyl methacrylate or a combination thereof, and wherein the aqueous latex composition further comprises a cross-linking agent in an aqueous phase to crosslink with the crosslinkable monomer when water evaporates, and wherein a total amount of vinyl monomer in the latex particles is greater than about 50 wt. % of the latex particles and a ratio of vinyl monomer to acrylic monomer in the latex particles is less than about 95:5.