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    Voided latex particles
    1.
    发明授权
    Voided latex particles 有权

    公开(公告)号：US11384216B2

    公开(公告)日：2022-07-12

    申请号：US16435716

    申请日：2019-06-10

    Applicant: Arkema Inc.

    Inventor： Lily Liu ,  Wayne Devonport ,  Daniel Edward Stark, Sr. ,  Matthew F. Boudreaux

    IPC: C08J9/24 ,  C08J9/28 ,  C08J9/16 ,  C08J9/224 ,  C08F285/00 ,  C08F6/00

    Abstract: A process for forming voided latex particles is improved by combining swelling and polymerization of an outer shell into a single step. The process includes contacting multi-stage emulsion polymer particles comprising a core, at least one intermediate shell, with a swelling agent, and polymerizing an outer shell after said contacting with swelling agent wherein the core and the at least one intermediate shell are contacted with swelling agent in the presence of less than 0.5% monomer based on the weight of the multi-stage emulsion polymer particles, and substantially all of the swelling occurs during polymerization of the outer shell.

    VOIDED LATEX PARTICLES
    2.
    发明申请
    VOIDED LATEX PARTICLES 审中-公开

    公开(公告)号：US20190292346A1

    公开(公告)日：2019-09-26

    申请号：US16435716

    申请日：2019-06-10

    Applicant: Arkema Inc.

    Inventor： Lily Liu ,  Wayne Devonport ,  Daniel Edward Stark, SR. ,  Matthew F. Boudreaux

    IPC: C08J9/224 ,  C08J9/28 ,  C08F285/00 ,  C08J9/16 ,  C08F6/00

    Abstract: A process for forming voided latex particles is improved by combining swelling and polymerization of an outer shell into a single step. The process includes contacting multi-stage emulsion polymer particles comprising a core, at least one intermediate shell, with a swelling agent, and polymerizing an outer shell after said contacting with swelling agent wherein the core and the at least one intermediate shell are contacted with swelling agent in the presence of less than 0.5% monomer based on the weight of the multi-stage emulsion polymer particles, and substantially all of the swelling occurs during polymerization of the outer shell.

    VOIDED LATEX PARTICLES
    3.
    发明申请
    VOIDED LATEX PARTICLES 审中-公开

    公开(公告)号：US20170233518A1

    公开(公告)日：2017-08-17

    申请号：US15504373

    申请日：2015-08-07

    Applicant: Arkema Inc.

    Inventor： Lily Liu ,  Wayne Devonport ,  Daniel Edward Stark ,  Matthew F Boudreaux

    IPC: C08F285/00

    CPC classification number: C08F285/00 ,  C08F6/006 ,  C08J9/16 ,  C08L51/003

    Abstract: A process for forming voided latex particles is improved by combining swelling and polymerization of an outer shell into a single step. The process includes contacting multi-stage emulsion polymer particles comprising a core, at least one intermediate shell, with a swelling agent, and polymerizing an outer shell after said contacting with swelling agent wherein the core and the at least one intermediate shell are contacted with swelling agent in the presence of less than 0.5% monomer based on the weight of the multi-stage emulsion polymer particles, and substantially all of the swelling occurs during polymerization of the outer shell.

    Hollow polymer particles for thermal insulation
    5.
    发明授权
    Hollow polymer particles for thermal insulation 有权

    公开(公告)号：US11459438B2

    公开(公告)日：2022-10-04

    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: B32B5/16 ,  B29C70/66 ,  C08J9/32 ,  B29C44/34 ,  B29K105/00

    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.

    WATER RESISTANT VOIDED POLYMER PARTICLES
    7.
    发明申请
    WATER RESISTANT VOIDED POLYMER PARTICLES 有权

    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.

    Voided latex particles
    8.
    发明授权
    Voided latex particles 有权

    公开(公告)号：US10351689B2

    公开(公告)日：2019-07-16

    申请号：US15504375

    申请日：2015-08-07

    Applicant: Arkema Inc.

    Inventor： Lily Liu ,  Wayne Devonport ,  Daniel Edward Stark ,  Matthew F. Boudreaux

    IPC: C08J9/16 ,  C08J9/224 ,  C08F285/00 ,  C08F6/00 ,  C08J9/28

    Abstract: A process for forming voided latex particles is improved by combining swelling and polymerization of an outer shell into a single step. The process includes contacting multi-stage emulsion polymer particles comprising a core, at least one intermediate shell, with a swelling agent, and polymerizing an outer shell after said contacting with swelling agent wherein the core and the at least one intermediate shell are contacted with swelling agent in the presence of less than 0.5% monomer based on the weight of the multi-stage emulsion polymer particles, and substantially all of the swelling occurs during polymerization of the outer shell.

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