Water-in-oil emulsion composition

    公开(公告)号:US12090218B2

    公开(公告)日:2024-09-17

    申请号:US17618664

    申请日:2020-02-28

    CPC classification number: A61K8/064 A61K8/8147 A61K8/92 A61K2800/805

    Abstract: To provide a water-in-oil emulsified composition which highly encapsulates a water content, has high viscosity, and is excellent in emulsification stability.
    The water-in-oil emulsified composition of the present disclosure comprises a dispersion medium comprising an oil content, and an oil-soluble copolymer having a monomer unit obtained from a specific hydrophilic monomer, and a monomer unit obtained from a specific hydrophobic monomer; and water droplets dispersed in the dispersion medium, wherein the oil content contains 60% by mass or more of polar oil with an IOB of 0.10 or more, and wherein the water droplets contain water and a surfactant, and the content of the water is 30% by mass or more based on the total amount of the composition.

    OIL-IN-WATER FINE EMULSION COSMETIC COMPOSITION

    公开(公告)号:US20200368119A1

    公开(公告)日:2020-11-26

    申请号:US16769815

    申请日:2019-02-08

    Inventor: Makoto Uyama

    Abstract: The invention provides a novel oil-in-water fine emulsion cosmetic composition that is stable.The oil-in-water fine emulsion cosmetic composition of the invention, containing: a dispersion medium that contains water and a divalent glycol; an oil component that is dispersed in the dispersion medium and contains a silicone oil and a hydrocarbon oil; a carboxy-modified silicone-based surfactant represented by the following Formula 1; at least one selected from a higher alcohol and a higher fatty acid that are liquid at 25° C. and have 16 to 22 carbon atoms; and a nonionic surfactant that contains a polyoxyethylene chain and has an HLB of 12 to 17, the cosmetic composition having oil droplets of an average particle size of 150 nm or smaller: wherein, at least one of R1 to R3 is a substituent represented by —O—Si(R4)3 wherein R4 is at least one selected from an alkyl group having 1 to 6 carbon atoms and a phenyl group and, when any one of R1 to R3 is not the substituent, the others are substituted or unsubstituted monovalent hydrocarbon groups that are optionally the same or different; A is a linear or branched alkylene group represented by CqH2q wherein q is an integer of 0 to 20, and M is a metal atom or an organic cation.

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