公开(公告)号：US20210009816A1

公开(公告)日：2021-01-14

申请号：US16969581

申请日：2019-02-19

Applicant: Arkema Inc.

Inventor： Lily Liu ,  Keith J. Andes ,  Wayne Devonport ,  Matthew F. Boudreaux

IPC: C09D5/02 ,  B01J13/14 ,  B01J13/22 ,  C09D133/12 ,  C09D133/02 ,  C09D7/40

Abstract: Latex emulsions and a process of making the same that incorporates voided latex particles having a core with a hydrophilic component; at least one intermediate shell with, as polymerized units, one or more hydrophilic monoethylenically unsaturated monomer, one or more nonionic monoethylenically unsaturated monomer, or mixtures thereof; an outer shell formed of a polymer having a Tg of at least 60? C; and a surface treatment applied to the outer shell in which a plurality of silicone oligomers with reactive functional groups are cross-linked with one another in order to provide a cross-linked outer surface. The core and the at least one intermediate shell are contacted with a swelling agent in the presence of less than 0.5% monomer based on the overall weight of the voided latex particles. In addition, one or more of the core, the intermediate shell, or the outer shell includes a surfactant.