Cosmetic composition and method of preparation
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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Abstract
The invention is directed to a cosmetic which comprises an ionic silicone as described herein.
38 Citations
18 Claims
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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) reacting i) 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; andiii) 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- H residues,
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14. A method of preparing a cosmetic composition comprising an oil phase and optionally an aqueous phase, wherein the method comprisingreacting a silicone hydride with an oxirane-functionalized ionic silicone, an oxirane ring-opening polymerization catalyst, a carrier solvent;
- and optionally, one or more silicon hydride activators to obtain a crosslinked ionic silicone network by the ring-opening polymerization of oxirane moiety with hydride;
2) shearing the crosslinked ionic silicone network of step
1) in the presence of at least one cosmeceutical active and optionally one or more cosmetically acceptable additives during and/or after polymerization of step
1) with at least a carrier solvent to form a crosslinked ionic silicone network gel; and3) adding the crosslinked ionic silicone network gel of step
2) to an oil phase of the cosmetic composition;wherein the oxirane-functionalized ionic silicone has 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.- View Dependent Claims (15, 16, 17, 18)
- and optionally, one or more silicon hydride activators to obtain a crosslinked ionic silicone network by the ring-opening polymerization of oxirane moiety with hydride;
Specification