公开(公告)号：US20190144658A1

公开(公告)日：2019-05-16

申请号：US16307156

申请日：2017-06-19

Applicant: Arkema Inc.

Inventor： Lily LIU ,  Wayne DEVONPORT ,  Daniel E. STARK ,  Matthew F. BOUDREAUX

IPC: C08L31/04 ,  C09D131/04 ,  C09J9/00 ,  C09D5/03 ,  C09J131/04

Abstract: A method of forming latex composite polymer particles produces hydrolysis resistant, composite polymer particles that can be used in aqueous latex compositions. Each of the latex composite polymer particles includes a first phase comprising a vinyl ester oligomer or polymer; optionally, an intermediate phase; and at least one second phase comprising an acrylic oligomer or polymer, a styrene oligomer or polymer, an acrylic-styrene copolymer, or mixtures thereof. The second phase and/or the intermediate phase at least partially encapsulates the first phase. The intermediate and second phases are more hydrophobic than the first phase. Optionally, the first phase, the second phase, and/or the intermediate phase may further comprise a cross-linking agent.