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    Bimodal silicone-acrylic polymer particles
    1.
    发明授权
    Bimodal silicone-acrylic polymer particles 有权

    公开(公告)号：US12071536B2

    公开(公告)日：2024-08-27

    申请号：US17259639

    申请日：2019-07-26

    Applicant: Rohm and Haas Company ,  Dow Silicones Corporation

    Inventor： Morris Wills ,  Hailan Guo ,  Nanguo Liu ,  Jeffrey Rastello

    IPC: C08L25/12 ,  C08F285/00

    CPC classification number: C08L25/12 ,  C08F285/00 ,  C08L2205/03 ,  C08L2207/53

    Abstract: Provided is a collection of polymer particles comprising



    (I) a plurality of acrylic particles (I) each comprising

    (a) an acrylic core polymer (Ia) comprising

    (i) polymerized units of one or more monovinyl acrylic monomers (Iai),
    (ii) polymerized units of one or more Si-free graftlinkers (Iaii),


    (b) a shell polymer (Ib),


    (II) a plurality of hybrid polymer particles (II), each comprising

    (a) a core polymer (IIa) comprising

    (i) polymerized units of one or more silicon-containing monomers (IIai);
    (ii) optionally, polymerized units of one or more monovinyl acrylic monomers (IIaii); and
    (iii) polymerized units of one or more Si-free graftlinkers (IIaiii);


    (b) a shell polymer (IIb) comprising polymerized units of one or more acrylic monomers (IIb).

    POLYMERIZATION PROCESS FOR SILICONE AND ACRYLIC MONOMERS
    5.
    发明申请
    POLYMERIZATION PROCESS FOR SILICONE AND ACRYLIC MONOMERS 有权

    公开(公告)号：US20210269575A1

    公开(公告)日：2021-09-02

    申请号：US17260452

    申请日：2019-07-26

    Applicant: Rohm and Haas Company ,  Dow Silicones Corporation

    Inventor： Morris Wills ,  Hailan Guo ,  Nanguo Liu ,  Jeffrey Rastello

    IPC: C08F283/12 ,  C08F265/06 ,  C08F220/14 ,  C08F220/18 ,  C08F220/40 ,  C08F285/00 ,  C08L51/00 ,  C08F2/22

    Abstract: Provided is a method of making a collection of polymer particles comprising (A) providing a dispersion (D1) of particles of core polymer (IIa) in an aqueous medium, wherein core polymer (IIa) comprises (i) polymerized units of one or more silicone monomers (IIai); (ii) optionally, polymerized units of one or more monovinyl acrylic monomers (IIaii); and (iii) polymerized units of one or more Si-free graftlinkers (IIaiii); wherein the dispersion (D1) comprises micelles of one or more surfactant, (B) producing a latex (L1) by performing an emulsion polymerization process (B) that produces particles of core polymer (Ia) dispersed in the aqueous medium, wherein latex (L1) comprises dispersed particles of core polymer (Ia) and dispersed particles of core polymer (IIa) in the aqueous medium, (C) producing a latex (L2) by performing an emulsion polymerization process (C) by a process comprising adding a monomer emulsion (E3) to latex (L1).

    ALLYLIC FUNCTIONAL THERMOPLASTIC ADDITIVE FOR UV CURABLE FLEXIBLE ACRYLIC RESIN CLEAR FILMS
    8.
    发明申请
    ALLYLIC FUNCTIONAL THERMOPLASTIC ADDITIVE FOR UV CURABLE FLEXIBLE ACRYLIC RESIN CLEAR FILMS 有权

    公开(公告)号：US20220315687A1

    公开(公告)日：2022-10-06

    申请号：US17615990

    申请日：2020-05-29

    Applicant: Rohm and Haas Company

    Inventor： Hailan Guo ,  Morris Wills

    IPC: C08F265/06 ,  C08J5/18 ,  C08F2/50

    Abstract: Disclosed is a composition comprising a multi-stage flexible acrylic resin and a branched polymer which is a reaction product of reactants comprising one or more monoethylenically unsaturated ester monomers, a chain transfer agent in an amount of 0.1 to 15 weight percent, and a crosslinker in an amount of 0.1 to 15 weight percent of a crosslinker, wherein weight percent is based on total amount of reactants, provided the amount of crosslinker is within +/−5 weight percent of the amount of chain transfer agent, and wherein the crosslinker comprises at least two carbon-carbon double bonds having different reactivity, and films thereof.

    Three-stage polymer particle
    9.
    发明授权
    Three-stage polymer particle 有权

    公开(公告)号：US11441026B2

    公开(公告)日：2022-09-13

    申请号：US16980586

    申请日：2019-03-04

    Applicant: Rohm and Haas Company

    Inventor： Hailan Guo ,  Pu Luo ,  Morris Wills

    IPC: C08L25/12

    Abstract: Provided is polymer particle comprising (a) 40% to 85% by weight, based on the dry weight of the polymer particle, a core polymer having Tg of −35° C. or lower; (b) 15% to 50% by weight, based on the dry weight of the polymer particle, an intermediate polymer having Tg that is 20° C. or lower and that is higher than the Tg of the core polymer by 10° C. or more; (c) 5% to 30% by weight, based on the dry weight of the polymer particle, a shell polymer having Tg of 50° C. or higher; wherein the shell polymer comprises polymerized units of all vinyl aromatic monomers in an amount of 1% or less, by weight based on the weight of the shell polymer.

    SILICONE CORE ACRYLIC SHELL IMPACT MODIFIERS CONTAINING PHOSPHORUS
    10.
    发明申请
    SILICONE CORE ACRYLIC SHELL IMPACT MODIFIERS CONTAINING PHOSPHORUS 有权

    公开(公告)号：US20250011596A1

    公开(公告)日：2025-01-09

    申请号：US18712540

    申请日：2022-12-07

    Applicant: Rohm and Haas Company

    Inventor： Pu Luo ,  Morris Wills

    IPC: C08L83/08

    Abstract: Provided are multistage polymer compositions comprising (a) a core comprising a silicone polymer, and (b) a shell comprising a silicone polymer. At least one of the silicone polymer in the core and the acrylic polymer in the shell comprise polymerized units derived from an organo-phosphorus monomer. Also provided are matrix resin compositions comprising such polymer compositions and a matrix resin.

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