Oily paste composition

• US 4,970,252 A
• Filed: 02/14/1990
• Issued: 11/13/1990
• Est. Priority Date: 02/15/1989
• Status: Expired due to Fees

• Current Assignee: Shin-Etsu Chemical Company Limited
• Original Assignee: Shin-Etsu Chemical Company Limited
• Inventors: Sakuta, Koji, Kuwata, Satoshi
• Primary Examiner(s): Hoke, Veronica P.
• Application Number:
  US07/480,004
• Time in Patent Office: 272 Days
• Field of Search: 524/268, 524/588, 524/500, 524/491, 525/477, 424/78
• US Class Current: 524/268
• CPC Class Codes: A61K 2800/262 Transparent; Translucent
• CPC Class Codes: A61K 47/06 Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
• CPC Class Codes: A61K 47/34 Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyesters, polyamino acids, polysiloxanes, polyphosphazines, copolymers of polyalkylene glycol or poloxamers A61K47/10 takes precedence
• CPC Class Codes: A61K 8/895 containing silicon bound to unsaturated aliphatic groups, e.g. vinyl dimethicone
• CPC Class Codes: A61K 9/0014 Skin, i.e. galenical aspects of topical compositions non-active ingredients are additionally classified in A61K47/00; A61K9/0009, A61K9/0021, A61K9/7015, A61K9/7023 take precedence; cosmetic preparations A61K8/00, A61Q; preparations for wound dressings or bandages A61L26/00
• CPC Class Codes: A61Q 19/00 Preparations for care of the skin
• CPC Class Codes: C08G 77/12 containing silicon bound to hydrogen C08G77/045 takes precedence
• CPC Class Codes: C08G 77/20 containing silicon bound to unsaturated aliphatic groups C08G77/045 takes precedence
• CPC Class Codes: C08L 2666/26 Natural polymers, natural resins or derivatives thereof according to C08L1/00 - C08L5/00, C08L89/00, C08L93/00, C08L97/00 or C08L99/00
• CPC Class Codes: C08L 83/04 Polysiloxanes
• CPC Class Codes: C09G 1/16 on natural or synthetic resins

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.

Claims

1. 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°

to 360°

C.

(D);

A low-viscosity silicone oil with a viscosity of not more than 100 cSt at 25°

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.

2. The oily paste composition of claim 1, wherein in said (I) polymerization product at least one of the (C) saturated hydrocarbon oil and (D) low-viscosity silicone oil is used in an amount of from 10 to 1,000 parts by weight based on 100 parts by total weight of the (A) organohydrogenpolysiloxane and the (B) organopolysiloxane.

3. The oily paste composition of claim 1, wherein said (A) organohydrogenpolysiloxane contains the silicon-bonded hydrogen atoms in a proportion of from 0.5 to 20 mol % based on the total of the silicon-bonded hydrogen atoms and organic groups.

4. The oily paste composition of claim 1, wherein in said (B) organopolysiloxane the aliphatic unsaturated groups comprise 0.6 to 20 mol % of the silicon-bonded organic groups.

5. The oily paste composition of claim 1, therein the component (II) saturated hydrocarbon oil is mixed in an amount of from 100 to 500 parts by weight based on 100 parts by weight of the component (I) polymerization product.

6. The oily paste composition of claim 1, which is obtained by kneading the component (I) polymerization product and the component (II) saturated hydrocarbon oil under application of shearing force.

7. A cosmetic material comprising the oily paste composition of claim 1.

8. A polishing material comprising the oily paste composition of claim 1.