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    COMPOSITIONS CONTAINING LATEX PARTICLES AND INORGANIC METAL OXIDES
    4.
    发明申请
    COMPOSITIONS CONTAINING LATEX PARTICLES AND INORGANIC METAL OXIDES 审中-公开

    公开(公告)号：US20200337951A1

    公开(公告)日：2020-10-29

    申请号：US16920789

    申请日：2020-07-06

    Applicant: Rohm and Haas Company

    Inventor： Junsi Gu ,  Jennifer Koenig ,  Xiang Qian Liu ,  Xiaodong Lu ,  Ying O'Connor ,  Curtis Schwartz ,  Xindi Yu ,  Fanwen Zeng

    IPC: A61K8/02 ,  A61K8/27 ,  A61K8/29 ,  A61K8/81 ,  A61Q19/02 ,  B01J13/14

    Abstract: A method for lightening skin tone is provided, comprising topically administering a personal care composition comprising: (A) voided latex particles comprising (i) a core polymer comprising (a) 20 to 60 weight % of monoethylenically unsaturated monomers containing a carboxylic acid group, and (b) 40 to 80 weight % of non-ionic ethylenically unsaturated monomers; and (ii) a shell polymer comprising (a) 55 to 85 weight % of non-ionic ethylenically unsaturated monomers, and (b) 15 to 45 weight % of polyethylenically unsaturated monomers; (B) 0.1 to 10 weight % of pigment grade inorganic metal oxide particles having a particle size of 250 nm to 1,000 nm; (C) a dermatologically acceptable carrier; and (D) an emollient, wherein the voided latex particles are present in at 0.5 to 10 weight %, based on weight of the composition, contain a void and have a particle size of 400 nm to 1500 nm.

    Multistage colored polymer particle and skin care formulations comprising same
    6.
    发明授权
    Multistage colored polymer particle and skin care formulations comprising same 有权

    公开(公告)号：US11058612B2

    公开(公告)日：2021-07-13

    申请号：US16754432

    申请日：2018-10-03

    Applicant: Rohm and Haas Company

    Inventor： Xiaodong Lu ,  Xiang Qian Liu ,  Fanwen Zeng ,  Junsi Gu ,  Wen-Shiue Young

    IPC: A61K8/02 ,  A61K8/81 ,  A61Q1/02 ,  A61Q19/00 ,  C09B69/10

    Abstract: A multistage colored polymer particle is provided, having a core comprising polymerized units of a monoethylenically unsaturated carboxylic acid core monomer and a non-ionic ethylenically unsaturated core monomer; an inner shell comprising polymerized units of a non-ionic ethylenically unsaturated inner shell monomer; a monoethylenically unsaturated carboxylic acid inner shell monomer; optionally, an aliphatic inner shell monomer; and, optionally, a first polymerizable dye monomer; an outer shell comprising polymerized units of a non-ionic ethylenically unsaturated outer shell monomer; a monoethylenically unsaturated non-carboxylic acid outer shell monomer; optionally, a second polymerizable dye monomer; and, optionally, an aliphatic outer shell monomer; wherein the core, when dry, contains at least one void; and wherein the multistage colored polymer particle comprises polymerized units of polymerizable dye monomer. Skin care formulations comprising multistage colored polymer particles and methods of using same are also provided.

    MULTISTAGE COLORED POLYMER PARTICLE AND SKIN CARE FORMULATIONS COMPRISING SAME
    7.
    发明申请
    MULTISTAGE COLORED POLYMER PARTICLE AND SKIN CARE FORMULATIONS COMPRISING SAME 审中-公开

    公开(公告)号：US20200315928A1

    公开(公告)日：2020-10-08

    申请号：US16754432

    申请日：2018-10-03

    Applicant: Rohm and Haas Company

    Inventor： Xiaodong Lu ,  Xiang Qian Liu ,  Fanwen Zeng ,  Junsi Gu ,  Wen-Shiue Young

    IPC: A61K8/02 ,  A61K8/81 ,  A61Q1/02 ,  A61Q19/00

    Abstract: A multistage colored polymer particle is provided, having a core comprising polymerized units of a monoethylenically unsaturated carboxylic acid core monomer and a non-ionic ethylenically unsaturated core monomer; an inner shell comprising polymerized units of a non-ionic ethylenically unsaturated inner shell monomer; a monoethylenically unsaturated carboxylic acid inner shell monomer; optionally, an aliphatic inner shell monomer; and, optionally, a first polymerizable dye monomer; an outer shell comprising polymerized units of a non-ionic ethylenically unsaturated outer shell monomer; a monoethylenically unsaturated non-carboxylic acid outer shell monomer; optionally, a second polymerizable dye monomer; and, optionally, an aliphatic outer shell monomer; wherein the core, when dry, contains at least one void; and wherein the multistage colored polymer particle comprises polymerized units of polymerizable dye monomer. Skin care formulations comprising multistage colored polymer particles and methods of using same are also provided.

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