Hair cosmetics

• US 6,139,851 A
• Filed: 03/24/1998
• Issued: 10/31/2000
• Est. Priority Date: 03/24/1997
• Status: Expired due to Term

• Current Assignee: Shiseido Company Limited
• Original Assignee: Shiseido Company Limited
• Inventors: Kimura, Ayumi, Omura, Takayuki, Nakama, Yasunari
• Primary Examiner(s): Page, Thurman K.
• Assistant Examiner(s): HOWARD, SHARON LEE
• Application Number:
  US09/046,616
• Time in Patent Office: 952 Days
• Field of Search: 424/70.1, 424/401, 424/70.11, 424/70.12, 514/937
• US Class Current: 424/401
• CPC Class Codes: A61K 8/06 Emulsions
• CPC Class Codes: A61K 8/064 Water-in-oil emulsions, e.g. Water-in-silicone emulsions
• 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: A61K 8/898 containing nitrogen, e.g. amodimethicone, trimethyl silyl amodimethicone or dimethicone propyl PG-betaine
• CPC Class Codes: A61Q 5/00 Preparations for care of the hair
• CPC Class Codes: A61Q 5/06 Preparations for styling the hair, e.g. by temporary shaping or colouring

Abstract

A lower alcohol-in-oil type emulsified hair cosmetic which contains one or more types of silicone derivatives, one or more types of specific polyether modified silicone and a lower alcohol. The emulsified hair cosmetic with very good stability by using for the emulsifier a polyether modified silicone without using a surfactant or organic modified clay mineral for the emulsifier.

Claims

1. A lower alcohol-in-oil stable emulsified hair cosmetic without a surfactant, comprising:

(A) one or more silicone derivative;

(B) one or more polyether modified silicones represented by the following general formula (1);

##STR14## and (C) a lower alcohol;

wherein, A denotes a member selected from the group consisting of methyl group, a phenyl group and a polyoxyalkylene group represented by the general formula --C₃ H₆ O(C₂ H₄ O)_a (C₃ H₆ O)_b R'"'"' (where R'"'"' denotes a member selected from the group consisting of a hydrogen atom, acyl group and alkyl group with a carbon number of 1-4, a denotes an integer 5-50 and b denotes an integer 5-50);

at least one of the three A'"'"'s is a polyoxyalkylene group;

R denotes a methyl group or phenyl group;

m denotes an integer 50-1,000;

n denotes an integer 1-40;

the polyether modified silicone contains 40 wt % or more of polyoxyalkyene groups in its molecules; and

the molecular weight of the polyether modified silicone is 30,000 or more.

2. The lower alcohol-in-oil stable emulsified hair cosmetic of claim 1, wherein said silicone derivative is a high molecular weight dimethylpolysiloxane represented by the following general formula (2):

##STR15## wherein, n denotes an integer 3,000-20,000.

3. The lower alcohol-in-oil stable emulsified hair cosmetic of claim 1, wherein said silicone derivative is an amino modified or ammonium modified silicone represented by the following general formula (3):

##STR16## wherein, R^a denotes a methyl group or a phenyl group;

R^b denotes the same as R^c or a methyl group or hydroxyl group;

R^c denotes a substitutional group containing an amino group or ammonium group represented by the formula R^d Z {R^d denotes a divalent alkylene group containing 3-6 carbon atoms, Z denotes a monovalent group selected from among --NR^e 2, --N⁺ R^e₃ A^-, --NR^e (CH₂)_n NR^e_n, --NR^e (CH₂)_n N⁺ R^e₃ A and --NR^e (CH₂)_n N(R^e)CO(R^F) (R^e denotes hydrogen or an alkyl group containing 1-4 carbon atoms, R^F denotes an alkyl group containing 1-4 carbon atoms, A denotes a chlorine atom, bromine atom or iodine atom, and n denotes an integer 2-6.)};

x and y each denotes a positive integer; and

x+y denotes an integer 3,000-20,000 and y/x is in the range of 1/500-1/10,000.

4. The lower alcohol-in-oil stable emulsified hair cosmetic of claim 1, wherein the content of said lower alcohol is 30-80 wt % of the total emulsified hair cosmetic.

5. The lower alcohol-in-oil stable emulsified hair cosmetic of claim 2, wherein the content of said lower alcohol is 30-80 wt % of the total emulsified hair cosmetic.

6. The lower alcohol-in-oil stable emulsified hair cosmetic of claim 3, wherein the content of said lower alcohol is 30-80 wt % of the total emulsified hair cosmetic.