Gelatinous external skin treatment composition

• US 5,859,069 A
• Filed: 10/03/1997
• Issued: 01/12/1999
• Est. Priority Date: 10/03/1996
• Status: Expired due to Term

• Current Assignee: Shiseido Company Limited
• Original Assignee: Shiseido Company Limited
• Inventors: Yanagida, Takeshi
• Primary Examiner(s): Schenkman, Leonard
• Application Number:
  US08/943,695
• Time in Patent Office: 466 Days
• Field of Search: 514/63, 514/772.3
• US Class Current: 514/772.3
• CPC Class Codes: A61K 8/891 saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
• CPC Class Codes: A61K 8/894 modified by a polyoxyalkylene group, e.g. cetyl dimethicone copolyol
• CPC Class Codes: A61Q 1/02 Preparations containing skin colorants, e.g. pigments preparations in powder form A61Q1/12
• CPC Class Codes: A61Q 1/12 Face or body powders for grooming, adorning or absorbing
• CPC Class Codes: A61Q 17/04 Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations

Abstract

A gelatinous external skin treatment composition comprising (1) spherical powder of organopolysiloxane elastomer having an average particle size of 1.0 to 15.0 μm, (2) silicone oil and (3) polyether modified silicone having the formula (I): ##STR1## wherein A represents a methyl group, phenyl group, or B explained below, B is a polyoxyalkylene group having the formula:

--C.sub.3 H.sub.6 O(C.sub.2 H.sub.4 O).sub.a (C.sub.3 H.sub.6 O).sub.b R'"'"',

wherein R'"'"' is a group selected from the group consisting of a hydrogen atom, acyl group, and C₁ to C₄ alkyl groups, a is an integer of 5 to 50, and b is an integer of 5 to 50,

R is a methyl group or phenyl group, m is an integer of 50 to 1000, and n is an integer of 0 to 40, provided that at least one polyoxyalkylene group is present in the molecule, and optionally (4) a lower alcohol having 3 carbon atoms or less and/or water.

Claims

1. A gelatinous external skin treatment composition comprising:

(1) 1.0 to 20.0% by weight of spherical powder of organopolysiloxane elastomer having an average particle size of 1.0 to 15.0 μ

m;

(2) 5.0 to 75.0% by weight of silicone oil;

(3) 1.0 to 20.0% by weight of polyether modified silicone having the formula (I);

##STR9## wherein A represents a methyl group, phenyl group, B is a polyoxyalkylene group having the formula;

space="preserve" listing-type="equation">--C.sub.3 H.sub.6 O(C.sub.2 H.sub.4 O).sub.a (C.sub.3 H.sub.6 O).sub.b R'"'"'

wherein R'"'"' is a group selected from the group consisting of a hydrogen atom, acyl group, and C₁ to C₄ alkyl groups, a is an integer of 5 to 50, and b is an integer of 5 to 50,

R is a methyl group or phenyl group, m is an integer of 50 to 1000, and n is an integer of 0 to 40, provided that at least one polyoxyalkylene group is present in the molecule; and

(4) 1.0 to 15.0% by weight of a component selected from the group consisting of lower alcohols having 3 carbon atoms or less and water.

2. A gelatinous external skin treatment composition as claimed in claim 1, wherein the silicone oil is dimethyl cyclopolysiloxane.

3. A gelatinous external skin treatment composition comprising:

(1) 1.0 to 20.0% by weight of spherical powder of organopolysiloxane elastomer having an average particle size of 1.0 to 15.0 μ

m;

(2) 25.0 to 85.0% by weight of silicone oil;

(3) 1.0 to 30.0% by weight of a polyether modified silicone having the general formula (I);

##STR10## wherein A represents a methyl group, phenyl group, B is a polyoxyalkylene group having the formula;

space="preserve" listing-type="equation">--C.sub.3 H.sub.6 O(C.sub.2 H.sub.4 O).sub.a (C.sub.3 H.sub.6 O).sub.b R'"'"'

wherein R'"'"' is a group selected from the group consisting of a hydrogen atom, acyl group, and C₁ to C₄ alkyl groups, a is an integer of 5 to 50, and b is an integer of 5 to 50,

R is a methyl group or phenyl group, m is an integer of 50 to 1000, and n is an integer of 0 to 40, provided that at least one polyoxyalkylene group is present in the molecule; and

(4) 1.0 to 15.0% by weight of a component selected from the group consisting of lower alcohols having 3 carbon atoms or less and water.

4. A gelatinous external skin treatment composition as claimed in claim 3, wherein the amount of the component (1) is 5.0 to 20.0% by weight, the amount of the component (2) is 40.0 to 80.0% by weight, the amount of the component (3) is 2.0 to 20.0% by weight, and the amount of the component (4) is 5.0 to 12.0% by weight.