Hair treatment composition

Details Hair treatment composition Hair treatment composition

1997-05-29

2001-04-17

Page, Thurman K. (Department: 1615)

Drug, bio-affecting and body treating compositions

Live hair or scalp treating compositions

Permanent waving or straightening

C424S070100, C008S405000, C008S431000, C008S433000, C132S202000, C132S203000, C132S204000, C132S210000

Reexamination Certificate

active

06217855

ABSTRACT:

FIELD OF THE INVENTION
This invention relates to a hair treatment composition capable of imparting high elasticity to the hair.
BACKGROUND OF THE INVENTION
Troubles due to low elasticity of the hair (for example, low tension, poor firmness and less bulkiness) amount to a considerable part in problems on the hair. In order to satisfy the requirements by those having these troubles, there have been marketed a number of hair treatment compositions containing elasticity imparting components and conditioning components. However, these components are adsorbed on the surface of the hair to thereby exert the desired effects. Since these components are washed away upon shampooing, it is needed to apply them repeatedly, which requires trouble some procedures. On the other hand, attempts have been made to penetrate active components into the hair so as to achieve the desired effects. For example, there has been reported a method for treating the hair with an aqueous solution of naphthalenesulfonic acid [refer to
J. Soc. Cosmet. Chem
., 36, 87-99 (1985)]. However, since the naphthalenesulfonic acid cannot sufficiently penetrate into the hair, a long time is required for the completion of the treatment, and this method cannot give any satisfactory effect.
SUMMARY OF THE INVENTION
Under these circumstances, the present inventors have conducted extensive studies. As a result, it has successfully found that the elasticity of the hair can be improved by treating the hair with a composition comprising at least one of an organic solvent and a reducing agent as well as an aromatic sulfonic acid, thus completing the present invention. While said treatment requires only a short period of time, the improved elasticity can be sustained for a long time.
Accordingly, the present invention provides a hair treatment composition (I) comprising the following components (a) and (b), or a hair treatment composition (II) comprising the following components (c) and (b):
(a) an organic solvent;
(b) at least one aromatic sulfonic acid selected from naphthalenesulfonic acids, azulenesulfonic acids, tetralinsulfonic acids, indansulfonic acids and benzophenonesulfonic acids, or salts thereof; and
(c) a reducing agent.
DETAILED DESCRIPTION OF THE INVENTION
Hair Treatment Composition (I):
There is no particular limitation in the selection of the organic solvent (a) to be contained in the composition (I) of the present invention, but preferable examples thereof include compounds represented by Formula (1):
wherein R
1
represents a hydrogen atom, an group having 1 to 4 carbon atoms or a group of the formula
wherein R
2
represents a hydrogen atom, a methyl group or a methoxy group and R
3
represents a bond or a saturated or unsaturated divalent hydrocarbon group having from 1 to 3 carbon atoms; Y and Z each represents a hydrogen atom or a hydroxyl group; and p, q and r each represents an integer of from 0 to 5, except that all the p, q and r are 0 and Z is a hydrogen atom and that all the p, q and r are 0, R
1
is a hydrogen atom and Z is a hydroxyl group; an N-alkyl-pyrrolidone represented by Formula (2):
wherein R
4
represents a straight-chain or branched alkyl group having from 1 to 18 carbon atoms; and an alkylene carbonates having from 1 to 4 carbon atoms.
Particular examples of the above compounds of Formulae (1)/(2) and the alkylene carbonates as the organic solvents (a) include ethanol, isopropanol, n-propanol, n-butanol, isobutanol, ethylene glycol, propylene glycol, 1,3-butanediol, benzyl alcohol, cinnamyl alcohol, phenethyl alcohol, p-anisyl alcohol, p-methylbenzyl alcohol, phenoxyethanol, 2-benzyloxyethanol, methyl carbitol, ethyl carbitol, propyl carbitol, butyl carbitol, triethylene glycol monoethyl ether, triethylene glycol monobutyl ether, glycerol, N-methylpyrrolidone, N-octylpyrrolidone and N-laurylpyrrolidone, preferably 1,3-butanediol, benzyl alcohol, 2-benzyloxyethanol and N-methylpyrrolidone.
The content of the organic solvent (a) in the composition (I) according to the present invention may range from 0.5 to 50%, preferably from 2 to 30%, by weight based on the total composition. When the content thereof is less than 0.5%, any sufficient effect cannot be achieved. When its content exceeds 50%, on the other hand, the effects cannot be improved any more.
As the aromatic sulfonic acids of the component (b), the following compounds can be illustrated. There is no limitation as to which position the sulfo group presents at in the molecule.
Examples of the naphthalenesulfonic acids to be used as the component (b) in the present invention include those represented by Formula (3) or salts thereof:
wherein at least one of A
1
to A
8
represents a sulfo group or a salt thereof while others each represents a hydrogen atom, a halogen atom, a hydroxyl group, a nitro group, a carboxyl group, a lower alkoxycarbonyl group, an alkyl group, an alkenyl group, a lower alkoxy group, a formyl group, an acyl group, a phenylazo group which may be substitured by the group of —OH, —COOH, —OCH
3
, —CH
3
, —CH
2
CH
3
or —NO
2
or an —N(R′)(R″) group, wherein R′ and R″ each represents a hydrogen atom, a lower alkyl group, a lower alkenyl group, a phenyl group, a benzyl group or an acyl group.
Particular examples of the compounds represented by Formula (3) include 1- or 2-naphthalenesulfonic acid, 2,7-naphthalenedisulfonic acid, 1,5-naphthalenedisulfonic acid, 2,6-naphthalenedisulfonic acid, 1,3,6-naphthalenetrisulfonic acid, 1-naphthol-2-sulfonic acid, 1-naphthol-4-sulfonic acid, 2-naphthol-6-sulfonic acid, 2-naphthol-7-sulfonic acid, 1-naphthol-3,6-disulfonic acid, 2-naphthol-3,6-disulfonic acid, 2-naphthol-6,8-disulfonic acid, 2,3-dihydroxynaphthalene-6-sulfonic acid, 1,7-dihydroxynaphthalene-3-sulfonic acid, chromotropic acid (4,5-dihydroxynaphthalene-2,7-disulfonic acid), 3,6-dihydroxynaphthalene-2,7-disulfonic acid, S acid (1-amino-8-naphthol-4-sulfonic acid), &ggr; acid (2-amino-8-naphthol-6-sulfonic acid), J acid (2-amino-5-naphthol-7-sulfonic acid), H acid (1-amino-8-naphthol-3,6-disulfonic acid), 7-amino-1,3-naphthalenedisulfonic acid, 1-amino-2-naphthol-4-sulfonic acid, 1-naphthylamine-4-sulfonic acid, Bronner's acid (2-naphthylamine-6-sulfonic acid), Krebs acid (1-naphthylamine-7-sulfonic acid), 2-naphthylamine-1-sulfonic acid, 1-naphthylamine-6-sulfonic acid, 1-naphthylamine-8-sulfonic acid, 4-amino-5-hydroxy-8-phenylazo-2,7-naphthalenedisulfonic acid, 4-amino-8-(4-carboxyphenylazo)-5-hydroxy-2,7-naphthalenedisulfonic acid, 6-amino-4-hydroxy-3-phenylazo-2-naphthalenesulfonic acid, 4-amino-8-(4-carboxyphenylazo)-5-hydroxy-1-naphthalenesulfonic acid, 7-amino-4-hydroxy-1-phenylazo-2-naphthalenesulfonic acid, 8-amino-5-(4-carboxyphenylazo)-2-naphthalenesulfonic acid, 4-amino-3-(4-carboxyphenylazo)-5-hydroxy-1-naphthalenesulfonic acid, 6-amino-4-hydroxy-5-phenylazo-2-naphthalenesulfonic acid, 2,7-diamino-1-naphthol-3-sulfonic acid, 7,8-diamino-1-naphthol-3-sulfonic acid, naphthalenesulfonic acid formalin polycondensate (weight-average degree of condensation: 2-100), 6-methyl-2-naphthalenesulfonic acid, 4-ethyl-1-naphthalenesulfonic acid, 5-isopropyl-1-naphthalenesulfonic acid, 5-butyl-2-naphthalenesulfonic acid and salts thereof. Among these compounds, 2-naphthalenesulfonic acid, 1,5-naphthalenedisulfonic acid, 2,6-naphthalenedisulfonic acid, chromotropic acid, 1-naphthalenesulfonic acid, H acid (1-amino-8-naphthol-3,6-disulfonic acid), 2,7-naphthalenedisulfonic acid, naphthalenesulfonic acid polycondensate (weight-average degree of condensation: 2-50) and salts thereof are particularly preferable.
Examples of the azulenesulfonic acids to be used as the component (b) in the present invention include guaiazulenesulfonic acid, 1-azulenesulfonic acid, 3-acetyl-7-isopropyl-1-azulenesulfonic acid, 3-(2-hydroxyethyl)-7-isopropyl-1-azulenesulfonic acid, 3-methyl-7-isopropyl-1-azulenesulfonic acid, 7-isopropyl-1-azulenesulfonic acid, 3-phenyl-6-isopropyl-1-azulenesulfonic acid, 1,4-dimethyl-7-isopropyl-2-azulenesulfonic acid, 4-ethoxy-3-ethyl-6-isopropyl-1-azulenesulfonic acid

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