公开(公告)号：US20240093053A1

公开(公告)日：2024-03-21

申请号：US18519237

申请日：2023-11-27

Applicant: Arkema Inc.

Inventor： Donovan K. LUJAN ,  Wayne DEVONPORT

IPC: C09D161/02

CPC classification number: C09D161/02

Abstract: Disclosed are voided latex particles, useful as opacifying agents for coating compositions containing organic solvents. The particles have a hollow interior, which substantially maintains its integrity after the particles are placed in contact with an organic solvent at 25° C. for 30 days. The particles also have a hydrophilic polymeric interior shell surrounding the hollow interior that is swellable with an aqueous swelling solution. The particles have first and second polymeric intermediate shells, surrounding the interior shell, formed from polymers that are different from each other and different from the interior shell polymer. Finally, the particles have an outer polymeric shell, surrounding the interior shells, which is formed from up to 100% by weight, as polymerized units, of methyl methacrylate. The interior shells and the outer shell each have a Tg greater than 60° C. Also disclosed is a multi-stage emulsion process for making the particles.

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.

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：US20180201733A1

公开(公告)日：2018-07-19

申请号：US15737357

申请日：2016-06-16

Applicant: Arkema Inc.

Inventor： Jeremy L. GROVE ,  Kyu-Jun KIM ,  Rong HU ,  Wayne DEVONPORT

IPC: C08G73/02 ,  C08G65/26 ,  C08L25/14 ,  C08L33/08 ,  C08L35/02 ,  C09D179/02 ,  C09J179/02

CPC classification number: C08G73/024 ,  C08G65/2624 ,  C08L25/14 ,  C08L33/04 ,  C08L33/08 ,  C08L35/02 ,  C08L79/02 ,  C09D179/02 ,  C09J7/38 ,  C09J179/02

Abstract: A latex product composition that includes an anionically-stabilized latex and one or more water soluble, polymers or polymeric adducts that have a backbone with a plurality of amine functional groups and hydroxyl functional groups. The polymers or polymeric adducts may be an addition product formed from at least one multifunctional amine compound reacted with one or more polyfunctional epoxy compounds, one or more monofunctional epoxy compounds, or a combination thereof. The amine compound and the one or more epoxy compounds are reacted to form polymers or polymeric adducts with the molar equivalent ratio of 1.3 to 3.8 amine functional group per epoxy functional group. The addition product may be present in about 0.1 to 15.0 wt. % and the at least one volatile base compound is present in about 1.0 wt. % to 10.0 wt. % based on the weight of the particles present in the anionically-stabilized latex.