Bleaching and dyeing; fluid treatment and chemical modification – Fugitive dye composition – process or product
Patent
1997-11-21
2000-08-22
Einsmann, Margaret
Bleaching and dyeing; fluid treatment and chemical modification
Fugitive dye composition, process or product
8405, 8557, 86371, D06P 513, A61K 713, C09B 6720
Patent
active
061065773
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to the use, for the temporary dyeing of the hair or animal hairs, of a composition comprising at least one aqueous dispersion of particles of film-forming polymer containing at least one acidic function, in which at least one non-melanin pigment is dispersed.
There are essentially three types of process known for dyeing the hair: substantial change in the natural colour and which uses oxidation dyes that penetrate into the hair fibre and form the dye by a process of oxidative condensation; condensation process and withstands shampooing 4 or 5 times; the natural colour of the hair, which holds from one shampoo-wash to the next and which serves to enhance or correct a shade that has already been obtained.
The invention proposes to use a dyeing process of the latter type leading to a coloration which can be eliminated at the first shampoo-wash. This may also be likened to a "make-up" process.
The term hair will be understood to refer to pilous systems consisting of a head of human hair and moustache or beard hairs.
In order to modify and enhance the hair temporarily, dyeing with direct dyes has already been proposed, but this dyeing may be heterogeneous on the parts of the hair which have been damaged by various degradations due to treatments such as, for example, permanent-waving, heat and atmospheric agents (sunshine, bad weather). Moreover, these dyes do not make it possible to obtain a natural and aesthetic grey shade except by using a mixture with other dyes, these having the drawback, however, of often being of different fastness to light and to shampooing, which may give rise to unsatisfactory final colorations.
It has also been proposed to use coloured polymers formed by grafting one or more dyes of azo, triphenylmethane, azine, indoamine or anthraquinone nature onto a polymer chain. These coloured polymers are not entirely satisfactory, in particular as regards the homogeneity of the coloration obtained or its fastness, not to mention the problems associated with their manufacture and in particular their reproducibility.
Application WO 93/02655 has also proposed a process for the temporary dyeing of keratin fibres using pigments resulting from the oxidative polymerization of indole derivatives such as 5,6-dihydroxyindole.
These melanin pigments may be combined with a film-forming latex in order to obtain better resistance to brushing and greater sheen.
This dyeing process leads to colorations whose results are not entirely satisfactory. The range of shades obtained is very limited. The properties relating to the dyeing power and to the remanence (resistance to water) are insufficient.
The Applicant has discovered, surprisingly, a process for so-called temporary dyeing, which may be eliminated at the first shampoo-wash, using a composition comprising an aqueous dispersion of particles of a film-forming polymer containing at least one acidic function and a pigment dispersed in the said dispersion which does not result from the oxidative polymerization of an indole compound. Such a process makes it possible to improve substantially the properties of remanence and of dyeing power. The range of colorations obtained by the process of the invention is substantially wider than that proposed by the process using melanin pigments. Furthermore, the colorations obtained by the dyeing process of the invention very appreciably withstand the rubbing of dry or wet hair with the user's fingers or hands or a cloth.
The subject of the present invention is thus the use, for the temporary dyeing of the hair or of animal hairs, of a composition comprising at least: at least one acidic function, in free or at least partially neutralized form, and dispersion; the said pigment not resulting from the oxidative polymerization of an indole compound.
The film-forming polymers containing at least one free or at least partially neutralized acidic function contain at least one acidic function of carboxylic, sulphonic, phosphoric or phosphonic type.
Their average molecular weight, preferably measured by
REFERENCES:
patent: 3630654 (1971-12-01), Rosenthal
patent: 3928273 (1975-12-01), Chang et al.
patent: 4047888 (1977-09-01), Papantoniou
patent: 4394479 (1983-07-01), Serlen
patent: 4933177 (1990-06-01), Grollier et al.
patent: 5008105 (1991-04-01), Grollier et al.
patent: 5597386 (1997-01-01), Igarashi et al.
patent: 5735907 (1998-04-01), Krustak et al.
English Derwent Abstract of EP-A-379409, Jul. 1990.
English Derwent Abstract of FR-A-2323435, Aug. 1977.
Audousset Marie-Pascale
Mondet Jean
"L'Oreal"
Einsmann Margaret
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