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    • 5. 发明公开
    • CROSSLINKED ORGANIC SILICON RESIN, A METHOD FOR PREPARING THE SAME, AND A COSMETIC
    • US20240384039A1
    • 2024-11-21
    • US18576768
    • 2022-06-21
    • Shin-Etsu Chemical Co., Ltd.
    • Takuya AbeMasayuki Konishi
    • C08G77/46A61K8/06A61K8/894A61Q1/00A61Q17/04
    • C08G77/46A61K8/06A61K8/894A61Q1/00A61Q17/04
    • [Problem]
      A purpose of the present invention is to provide a crosslinked organic silicon resin that can be dissolved in an oil agent that is liquid at room temperature, the crosslinked organic silicon resin becoming liquid, gum, or solid at room temperature when the oil agent is volatilized; and a method for preparing the same. Another purpose is to provide a cosmetic having exceptional applicability and richness and an excellent feeling on use, the cosmetic forming an emulsified product having a high-water content, freshness, and excellent stability over time, and to provide a crosslinked organic silicon resin that is capable of imparting a sunscreen effect and is less likely to form white residue or cause whitening in cosmetics that contain a UV scattering agent.
      [Solution]
      The present invention provides a crosslinked organic silicon resin represented by the average composition formula (1) and the method for preparing the same, wherein R1 is, independently of each other, unsubstituted or substituted, an alkyl group having 1 to 30 carbon atoms, an aryl group having 6 to 30 carbon atoms, or an aralkyl group having 7 to 30 carbon atoms, R2 is, independently of each other, a polyoxyalkylene-containing group, a polyhydric alcohol-containing hydrocarbon group having two or more hydroxyl groups and/or alkoxy groups, or a group selected from the groups for R1, one or more of R2 in each R23SiO1/2 unit are a polyoxyalkylene-containing group or a polyhydric alcohol-containing hydrocarbon group having two or more hydroxyl groups and/or alkoxy groups, R3 is, independently of each other, an organopolysiloxane-containing group or a group selected from the groups for R1, each R33SiO1/2 unit has one or more organopolysiloxane-containing group, X is a divalent polyoxyalkylene-containing group represented by the formula (2) or a divalent group represented by the following formula (3), some of R2, R3 and X are optionally a hydroxyl group, a1, a2, a3, a4, b, c and d are numbers satisfying equations 0
    • 10. 发明申请
    • CROSSLINKED ORGANOSILICON RESIN, A METHOD FOR PRODUCING SAME, AND A COSMETIC
    • US20210277187A1
    • 2021-09-09
    • US17258786
    • 2019-07-09
    • Shin-Etsu Chemical Co., Ltd.
    • Takuya AbeMasayuki KonishiChihiro Hayakawa
    • C08G77/38A61K8/895A61Q17/04A61Q1/00A61Q1/06A61Q1/10A61Q5/12A61Q5/06A61Q15/00A61Q3/02
    • An object is to provide a crosslinked organosilicone resin which has a crosslinked structure formed by reacting a silicone or hydrocarbon having an alkenyl group at both ends thereof with a hydrosilyl group-containing organosilicone resin, is soluble with a liquid oil at room temperature, and forms a film by volatilization of the oil, and to provide a method for preparing the same and cosmetics containing the crosslinked organosilicone resin. The present invention provides a crosslinked organosilicone resin represented by the following average composition formula (1): (R13SiO1/2)a1(R23SiO1/2)n2(R33SiO1/2)n3(R13-p(X1/2)pSiO1/2)a4(R12SiO2/2)b(R1SiO3/2)c(SiO4/2)d   (1) wherein R1 is, independently of each other, a substituted or unsubstituted, monovalent hydrocarbon group having 1 to 30 carbon atoms and having no aliphatic unsaturated bond, R2 is, independently of each other, a polyoxyalkylene-containing group, a polyglycerin-containing group, or a group selected from the groups defined for R1 and at least one of R2 in each of the R23SiO1/2 units is a polyoxyalkylene-containing group or a polyglycerin-containing group, R3 is, independently of each other, an organopolysiloxane-containing group or a group selected from the groups defined for R1 and at least one of R3 in each of the R33SiO1/2 units is an organopolysiloxane-containing s group, X is a divalent group represented by the following formula (2) or (3): wherein R4 is, independently of each other, a substituted or unsubstituted, monovalent hydrocarbon group having 1 to 30 carbon atoms and having no aliphatic unsaturated bond, e is an integer of 0≤e≤500 and k is an integer of 0≤k≤5; —(CH2)2—CfH2f—(CH2)2—  (3) wherein f is an integer of 0≤f≤20; optionally, a part of R2, R3 and X may be a hydroxyl group, a1, a2, a3, a4, b, c, and d satisfy the equations, 0