公开(公告)号：US20190309140A1

公开(公告)日：2019-10-10

申请号：US16340183

申请日：2017-10-06

Applicant: Arkema Inc.

Inventor： Lily LIU ,  Daniel E. STARK ,  Wayne DEVONPORT ,  Donovan K. LUJAN

IPC: C08J9/32

Abstract: A thermal insulating additive, product formed therefrom, and method of making the same, wherein the thermal insulating additive comprises a plurality of hollow polymeric particles having an average particle size up to about 0.3 micrometers. The hollow polymeric particles exhibit a mechanical strength in a compression test up to about 420 psi and a thermal conductivity that is less than 0.150 W/m-k. The hollow polymeric particles are individually formed as an alkaline swellable core that is at least partially encapsulated with two or more shell layers; the alkaline swellable core prior to swelling exhibits an average particle size that is less than about 50 nanometers.

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.