Ester modified cross-linked silicone compositions
AssigneeMomentive Performance Materials Inc.
InventorsAlok SARKAR, Benjamin FALK, Ashitha KANDIKKAL
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Abstract
The present disclosures are directed to compositions comprising a polymer having linear or branched silicone substituted by at least one alkylcarboxy group and cross-linked with an alkyl functional cross-linker, which has the benefits of compatibility and structuring of personal care components and the resultant personal care applications.
Claims39
A composition comprising a polymer having linear or branched silicone substituted by at least one alkylcarboxyalkyl group, and cross-linked with an alkyl functional cross-linker, wherein an average number of alkylcarboxyalkyl substitutions per silicone is between 1 and 60 and an average number of crosslinks between linear or branched silicone being between 1 and 30.
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A method for preparing a polymer comprising reacting:
- (a) a Si—H functional compound of formula (I):
- MHaMbDHcDdTHeTfQg (I)
- wherein:
- MH=R1R2HSiO1/2;
- M=R3R4R5SiO1/2;
- DH=R6HSiO2/2;
- D=R7R8SiO2/2;
- TH=HSiO3/2;
- T=R9SiO3/2;
- and
- Q=SiO4/2;
- wherein
- R1, R2, R3, R4, R5, R6, R7, R8, and R9 are independently an aliphatic, aromatic, or fluoro monovalent hydrocarbon having from 1 to 60 carbon atoms;
- and
- a, b, c, d, e, f, and g are independently zero or a positive integer, such that 2 ≤a+b+c+d+e+f+g≤6000 and when a′+c′+e′=2, a+c+e>2;
- (b) a carboxy functional olefin of formula (II):
- wherein
- R′ is hydrogen, —Si(Ra)3 wherein Ra is an aliphatic monovalent hydrocarbon, an aliphatic, aromatic or fluoro monovalent hydrocarbon;
- n is 0≤n≤30;
- and
- (c) a silicone based alkenyl functional cross-linker of formula (III) and/or a non-silicone based alkenyl functional cross-linker of formula (IV):
- M1a′M2b′D1c′D2d′T1e′T2f′Qg′ (III),
- wherein:
- M1=R10R11R12SiO1/2;
- M2=R13R14R15SiO1/2;
- D1=R16R17SiO2/2;
- D2=R18R19SiO2/2;
- T1=R20SiO3/2;
- T2=R21SiO3/2;
- and
- Q=SiO4/2;
- wherein
- R11, R12, R13, R14, R15, R17, R18, R19, and R21, are independently an aliphatic, aromatic, or fluoro monovalent hydrocarbon having from 1 to 60 carbon atoms;
- R10, R16, and R20 are each a monovalent radical containing at least one terminal olefin bond;
- a′, b′, c′, d′, e′, f′, and g′ are independently zero or a positive integer, such that 2≤a′+b′+c′+d′+e′+f′+g′≤6000 and when a+c+e=2, a′+c′+e′>2;
- and
- Z is an aliphatic hydrocarbon with 1 to 60 carbon atoms.
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Dependencies are inferred from the claim text.