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Cosmetic composition and method of preparation

  • US 9,744,119 B2
  • Filed: 10/27/2016
  • Issued: 08/29/2017
  • Est. Priority Date: 12/16/2014
  • Status: Active Grant
First Claim
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1. A method of preparing a cosmetic composition comprising an oil phase and optionally an aqueous phase wherein the method comprising(a) reactingi) at least one silicone hydride bearing at least two Si—

  • H residues,ii) at least one cross-linker silicone with two or more Si-unsaturated radicals,wherein at least one of (i) or (ii) silicone is an ionic silicone having the general formula (I);


    M1aM2bM3cD1dD2eD3fT1gT2hT3iQj



    (I)wherein;

    M1=R1R2R3SiO1/2 M2=R4R5R6SiO1/2 M3=R7R8R9SiO1/2 D1=R10R11SiO2/2 D2=R12R13SiO2/2 D3=R14R15SiO2/2 T1=R16SiO3/2 T2=R17SiO3/2 T3=R18SiO3/2 Q=SiO4/2 where R1, R2, R3, R5, R6, R8, R9, R10, R11, R13, R15, R16 are each independently aliphatic, aromatic or fluoro containing monovalent hydrocarbon radicals containing from 1 to about 60 carbon atoms;

    where R4, R12, R17 are each monovalent radical bearing ion-pairs,where R7, R14 and R18 are each independently selected from hydrogen, —

    OR20, unsaturated monovalent radicals or monovalent epoxy group-containing radicals, monovalent sulfur atom-containing radicals and monovalent organosilane groups, wherein R20 is independently selected from hydrogen, monovalent hydrocarbon radical of from 1 to about 60 carbon atoms,where the subscript a, b, c, d, e, f, g, h, i, j are zero or positive subject to the following limitations;

    the sum a+b+c+d+e+f+g+h+i+j is greater than or equal to 2 and less than or equal to 6000, b+e+h is greater than 0; and

    iii) an effective amount of precious metal catalyst suitable for facilitating addition cure reaction between i) and ii) to obtain a crosslinked ionic silicone network,(b) combining the crosslinked ionic silicone network of step (a), at least one cosmeceutical active, and optionally one or more cosmetically acceptable additives;

    (c) shearing the combined components of step (b) during and/or after the combining step (b) with a solvent to form a crosslinked ionic silicone network gel, and(d) adding the crosslinked ionic silicone network gel to an oil phase to obtain the cosmetic composition.

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