Cosmetic skin covering sheets and their method of preparation
First Claim
1. A cosmetic skin covering sheet which comprises a patch containing a cosmetic material for application to the skin or a cosmetic formulation which forms the cosmetic skin covering sheet in-situ upon topical application of the cosmetic formulation onto the skin, and the said cosmetic skin covering sheet is produced by a reaction selected from a condensation reaction, a hydrosilylation reaction, a free-radical polymerization reaction, a ring-opening polymerization reaction and combinations thereof,wherein the reaction is conducted in the presence of(i) at least one ionic silicone having the general formula:
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M1aM2bM3cD1dD2eD3fTtgT2hT3iQj
(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 independently an aliphatic, an aromatic or fluoro containing monovalent hydrocarbon radicals containing from 1 to about 60 carbon atoms;
where R4, R12, R17 are monovalent or multi-valent radical bearing ion-pairs,where R7, R14 and R18 are independently selected from hydrogen, —
OR20 and an unsaturated monovalent radical, wherein each R20 is independently selected from hydrogen, and a monovalent hydrocarbon radical of from 1 to about 60 carbon atoms,where the subscripts 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, and b+e+h is greater than 0; and
(ii) at least one compound selected from a hydrosilylation effective component, a condensation effective component, free radical polymerization effective component and a ring-opening polymerization component;
with the proviso that when R7, R14 and R18 are hydrogen then the hydrosilylation effective component is selected from a vinyl silicone and hydrosilylation effective catalyst, and when R7, R14 and R18 are unsaturated monovalent radicals the hydrosilylation effective component is selected from a hydride silicone and hydrosilylation effective catalyst.
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Accused Products
Abstract
The invention is directed to a cosmetic skin covering sheet which comprises a patch containing a cosmetic material for application to the skin or a cosmetic formulation which forms the cosmetic skin covering sheet in-situ upon topical application of the cosmetic formulation onto the skin, wherein each of said patch or cosmetic formulation comprises an ionic silicone as described herein.
41 Citations
19 Claims
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1. A cosmetic skin covering sheet which comprises a patch containing a cosmetic material for application to the skin or a cosmetic formulation which forms the cosmetic skin covering sheet in-situ upon topical application of the cosmetic formulation onto the skin, and the said cosmetic skin covering sheet is produced by a reaction selected from a condensation reaction, a hydrosilylation reaction, a free-radical polymerization reaction, a ring-opening polymerization reaction and combinations thereof,
wherein the reaction is conducted in the presence of (i) at least one ionic silicone having the general formula: -
M1aM2bM3cD1dD2eD3fTtgT2hT3iQj
(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 independently an aliphatic, an aromatic or fluoro containing monovalent hydrocarbon radicals containing from 1 to about 60 carbon atoms; where R4, R12, R17 are monovalent or multi-valent radical bearing ion-pairs, where R7, R14 and R18 are independently selected from hydrogen, —
OR20 and an unsaturated monovalent radical, wherein each R20 is independently selected from hydrogen, and a monovalent hydrocarbon radical of from 1 to about 60 carbon atoms,where the subscripts 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, and b+e+h is greater than 0; and(ii) at least one compound selected from a hydrosilylation effective component, a condensation effective component, free radical polymerization effective component and a ring-opening polymerization component; with the proviso that when R7, R14 and R18 are hydrogen then the hydrosilylation effective component is selected from a vinyl silicone and hydrosilylation effective catalyst, and when R7, R14 and R18 are unsaturated monovalent radicals the hydrosilylation effective component is selected from a hydride silicone and hydrosilylation effective catalyst. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification