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    • 9. 发明公开
    • CROSSLINKED ORGANOSILICON RESIN, METHOD FOR PRODUCING SAME, AND COSMETIC
    • EP3822303A1
    • 2021-05-19
    • EP19834883.1
    • 2019-07-09
    • SHIN-ETSU CHEMICAL CO., LTD.
    • ABE, TakuyaKONISHI, MasayukiHAYAKAWA, Chihiro
    • C08G77/50A61K8/893A61K8/894A61Q1/02A61Q5/00A61Q17/04
    • 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):

              (R 1 3 SiO 1/2 ) a1( R 2 3 SiO 1/2 ) a2 (R 3 3 SiO 1/2 ) a3 (R 1 3-p (X 1/2 ) p SiO 1/2 ) a4 (R 1 2 SiO 2/2)b (R 1 SiO 3/2)c (SiO 4/2)d      (1)

      wherein R 1 is, independently of each other, a substituted or unsubstituted, monovalent hydrocarbon group having 1 to 30 carbon atoms and having no aliphatic unsaturated bond, R 2 is, independently of each other, a polyoxyalkylene-containing group, a polyglycerin-containing group, or a group selected from the groups defined for R 1 and at least one of R 2 in each of the R 2 3 SiO 1/2 units is a polyoxyalkylene-containing group or a polyglycerin-containing group, R 3 is, independently of each other, an organopolysiloxane-containing group or a group selected from the groups defined for R 1 and at least one of R 3 in each of the R 3 3 SiO 1/2 units is an organopolysiloxane-containing group, X is a divalent group represented by the following formula (2) or (3):

      wherein R 4 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;

              -(CH 2 ) 2 -C f H 2f -(CH 2 ) 2 -     (3)

      wherein f is an integer of 0≤f≤20;
      optionally, a part of R 2 , R 3 and X may be a hydroxyl group, a1, a2, a3, a4, b, c, and d satisfy the equations, 0