Oily paste composition
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsKoji Sakuta, Satoshi Kuwata
Life of this patent
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Abstract
An oily paste composition comprising, as essential components, (I) a polymerization product obtained by addition polymerization of (A) an organohydrogenpolysiloxane containing in its molecule not less than 1.5 silicon-bonded hydrogen atoms on average and (B) an organopolysiloxane containing in its molecule not less than 1.5 silicon-bonded aliphatic unsaturated groups on average, and (II) a saturated hydrocarbon oil. The present composition is smooth to touch, free from stickiness, and excellent in transparency. It is useful for, for example, cosmetic or medical purpose.
Claims8
An oily paste composition comprising:
- (I) 100 parts by weight of a polymerization products obtained by addition polymerization of an organohydrogenpolysiloxane of (A) given below and an organopolysiloxane of (B) given below in the presence of at least one member selected from the group consisting of a saturated hydrocarbon oil of (C) given below and a low-viscosity silicone oil of (D) given below:
- and
- (II) from 10 to 1,000 parts by weight of a saturated hydrocarbon oil of (C) given below,
- (A):
- An organohydrogenpolysiloxane containing in its molecule not less than 1.5 silicon-bonded hydrogen atoms on average,
- (B):
- An organopolysiloxane containing in its molecule not less than 1.5 silicon-bonded aliphatic unsaturated groups on average,
- (C):
- A saturated hydrocarbon oil with a boiling temperature range of from 70.degree. to 360.degree. C.
- (D):
- A low-viscosity silicone oil with a viscosity of not more than 100 cSt at 25.degree. C. wherein the (a) organohydrogenpolysiloxane and (B) organopolysiloxane are used in such a proportion that the molar ratio of the silicon-bonded hydrogen atoms possessed by (A) to the silicon-bonded aliphatic unsaturated groups possessed by (B) ranges from 1/3 to 3/1.
Dependencies are inferred from the claim text.