Silicone polymer, silicone composition, and cosmetic preparation containing the same
AssigneeShin-Etsu Chemical Co., Ltd.
InventorKoji Sakuta
Life of this patent
Estimating the term…
Abstract
This invention relates to a silicone polymer that is insoluble in organic solvents due to its three dimensional crosslinked structure which swells up relative to fluorosilicone oils. The silicone polymer is a crosslinked product of an SiH containing fluorosilicone and an unsaturated polyoxyalkylene. This invention also relates to a paste-like composition formed by making the silicone compounds swell up in silicone oil and a cosmetic material.
Claims37
A silicone polymer having a three-dimensional crosslinked structure obtained by polymerizing:
- at least one of:
- an organohydrogen polysiloxane of the formula (A1):
- R1aR2bHcSiO(4−a−b−c)/2 (A1)
- and,
- an organohydrogen polysiloxane of the formula (A2):
- R1dHeSiO(4−d−e)/2 (A2),
- and;
- at least one of:
- a polyoxyalkylene of the formula (B1):
- CfH2f−1(CgH2gO)hCfH2f−1 (B1)
- a polyoxyalkylene of the formula (B2):
- a polyoxyalkylene of the formula (B3):
- and,
- an organopolyoxy alkylene (B4) of the formula (B4):
- R1jR5kSiO(4−j−k)/2 (B4);
- which silicone polymer is capable of containing or dissolving and swelling its same weight or more of pentane-3,3,3-trifluoropropyl pentamethylcyclopentasiloxane
- [Parenopenst]wherein, in the formulae:
- R1, which may be the same or different, is a hydrocarbon group having 1 to 20 carbon atoms, which does not contain an aliphatic unsaturated bond and which is optionally substituted or unsubstituted, provided that 11 to 60 mole % of the R1 groups are a fluorine-substituted monovalent hydrocarbon group,
- R2, which may be the same or different, is an organic group of the formula —CfH2fO(CgH2gO)hR6,
- R3, which may be the same or different, is a hydrogen atom or a monofunctional hydrocarbon group containing 1 to 10 carbon atoms which does not contain aliphatic unsaturated bonds and which is optionally substituted or unsubstituted,
- R4, which may be the same or different, is an organic group identical to R3 or is —CfH2f−1,
- R5 is a monofunctional hydrocarbon group having 2 to 10 carbon atoms containing a terminal vinyl group, and
- R6 is a hydrogen atom or a monofunctional hydrocarbon group or acetyl group not containing aliphatic unsaturated groups, which is optionally substituted or unsubstituted,
- a is about 1.0-2.3, b is about 0.001 to 1.0, c is about 0.001-1.0, d is about 1.0-2.3, e is about 0.001-1.0, j is about 1.0-2.3, and k is about 0.001-1.0, and about 1.5≦a+b+c≦ about 2.6, about 1.5≦d+e≦ about 2.6, about 1.5≦j+k≦ about 2.6, f is an integer in the range 2-6, g is 2, 3 or 4, h is an integer in the range 1-200, i is an integer in the range 2-20, and x is 0 or 1[Parenclosest].
A paste-like silicone composition obtained by kneading a mixture of 100 weight parts of said silicone polymer of claim 1 and 10-1000 weight parts of a fluorine-modified silicone oil, which is of the formula (C):
- R1mSiO(4−m)/2 (C)
- having a viscosity of less than about 200 mm2/s at 25 degree C.,
- [Parenopenst]R1, which may be identical or different, are monofunctional hydrocarbon groups having 1 to 20 carbon atoms not containing an aliphatic unsaturated bond which are optionally substituted or unsubstituted, provided that about 11-60 mole % of the R1 groups are a fluorine-substituted monofunctional hydrocarbon group, and m is 1.8-2.3[Parenclosest].
Dependencies are inferred from the claim text.