Suncare compositions
    58.
    发明授权

    公开(公告)号:US11058613B2

    公开(公告)日:2021-07-13

    申请号:US16634320

    申请日:2018-06-28

    Abstract: A suncare formulation comprising: a dermatologically acceptable organic carrier; a UV radiation absorbing agent; and an SPF booster; wherein the SPF booster comprises a multistage polymeric particle 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 and an aliphatic inner shell monomer; an outer shell comprising polymerized units of a non-ionic ethylenically unsaturated outer shell monomer; an aliphatic outer shell monomer; a monoethylenically unsaturated non-carboxylic acid outer shell monomer and an ethylenically unsaturated surfactant outer shell monomer; wherein the core, when dry, contains a void; wherein the multistage polymeric particle has an average particle size, when dry, of 50 to 1,000 nm.

    Multistage colored polymer particle and skin care formulations comprising same

    公开(公告)号:US11058612B2

    公开(公告)日:2021-07-13

    申请号:US16754432

    申请日:2018-10-03

    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.

    Skin care formulations containing copolymers and inorganic metal oxide particles

    公开(公告)号:US10973743B2

    公开(公告)日:2021-04-13

    申请号:US15535743

    申请日:2015-12-18

    Abstract: Provided are skin care compositions that are useful as SPF and UV absorption boosters in formulations containing inorganic metal oxides. The compositions comprise (a) 0.1 to 20 weight % inorganic metal oxide particles, based on the weight of the composition, (b) 0.1 to 15 weight % copolymer particles dispersed in an aqueous medium, wherein the copolymer particles comprise polymerized units derived from (i) 0.1 to 20 weight % of phosphorus acid monomers, and (ii) 80 to 99.9 weight % of comonomers, and (c) a dermatologically acceptable carrier. Also provided are methods of protecting skin from UVA and UVB damage comprising topically administering such compositions to the skin, and methods of boosting the SPF or UV absorption of a sunscreen composition containing inorganic metal oxide particles comprising including such copolymer particles in the composition.

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