POLYMERIZATION PROCESS FOR SILICONE AND ACRYLIC MONOMERS

    公开(公告)号:US20210269575A1

    公开(公告)日:2021-09-02

    申请号:US17260452

    申请日:2019-07-26

    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).

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