Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing
Reexamination Certificate
2000-01-28
2002-04-30
Ogden, Necholus (Department: 1751)
Bleaching and dyeing; fluid treatment and chemical modification
Dyeing involving animal-derived natural fiber material ,...
Hair dyeing
C008S431000, C008S111000, C008S101000, C008S552000, C008S553000, C008S557000, C008S561000, C008S405000
Reexamination Certificate
active
06379401
ABSTRACT:
The present invention relates to anhydrous compositions for bleaching keratin fibers, comprising a combination of at least one nonionic amphiphilic polymer comprising at least one fatty chain, and at least one water-soluble thickening polymer. The present invention also relates to the use of these compositions for preparing ready-to-use bleaching compositions, to a process for bleaching keratin fibers using these compositions, and to a packaging kit containing such a composition.
Bleaching powders containing a peroxygenated reagent, such as ammonium or alkali metal persulphates, perborates or percarbonates, which are combined with an aqueous hydrogen peroxide composition at the time of use are generally used for bleaching the hair. Since peroxygenated salts and hydrogen peroxide are relatively stable in acidic medium, it is necessary to activate them at basic pH in order to obtain an adequate formation of oxygen. It is thus common to add alkaline compounds such as amines and alkaline silicates to bleaching powders.
In the field of hair bleaching, bleaching compositions are generally sought which are thick enough to allow a precise application onto certain regions of the head of hair, and which do not run the risk of running onto the face or beyond the regions which it is proposed to bleach.
The thickening or gelling effect is conventionally obtained with traditional thickeners such as cellulose derivatives, starch derivatives, alginates or thickening silicates.
However, when these traditional thickeners are used, there is a large decrease in the viscosity of the final bleaching composition over time.
Thus, there is a need for a thickening system capable of maintaining a high viscosity for the time required to obtain the desired bleaching effect, which is generally between ten minutes and one hour.
The Inventors have discovered, surprisingly, that it is possible to considerably improve the maintenance of the viscosity over time of bleaching compositions by combining the conventional water-soluble thickeners with a nonionic amphiphilic polymer comprising at least one fatty chain.
It has also been found that such a thickening system allows much larger dilutions, with aqueous hydrogen peroxide compositions, than the known thickening systems.
Consequently, one subject of the present invention is an anhydrous composition for bleaching keratin fibers, in particular human keratin fibers, comprising, in a medium which is suitable for bleaching, at least one alkaline agent, at least one peroxygenated salt and, in addition, a combination
of at least one water-soluble thickening polymer, and
of at least one nonionic amphiphilic polymer comprising at least one fatty chain.
A subject of the invention is also the use of such a composition to prepare a ready-to-use bleaching composition.
A further subject of the invention is a process for bleaching keratin fibers using the anhydrous bleaching composition described above, as well as a packaging kit containing such a composition.
Other subjects of the invention will become apparent on reading the description and the examples which follow.
The water-soluble thickening polymers which can be used according to the present invention encompass all the synthetic water-soluble polymers or those of natural origin which are conventionally used in cosmetics.
Examples of synthetic thickening polymers which may be mentioned, for example, are polyvinylpyrrolidone, polyacrylic acid, polyacrylamide, polyacrylamidomethylpropanesulphonic acid or copolymers thereof, these polymers being crosslinked or non crosslinked.
The thickening polymers of natural origin, which can be used according to the present invention, are polymers comprising at least one sugar unit, namely
(a) nonionic guar gums;
(b) biopolysaccharide gums of microbial origin such as scleroglucan gum and xanthan gum;
(c) gums derived from plant exudates such as gum arabic, ghatti gum, karaya gum or gum tragacanth;
(d) gums extracted from algae, such as carrageenans or agar;
(e) gums obtained from plant extracts, such as carob gum or pectins extracted from fruit pulp;
(f) alginates;
(g) starches; and
(h) hydroxyalkylcelluloses and carboxyalkylcelluloses.
In the present invention, the expression “sugar unit” means a monosaccharide moiety or an oligo- or polysaccharide moiety comprising the same type of saccharide units (oligo- or polyholosides) or of several types of different saccharide units (oligo- or polyheterosides).
The saccharide units of all these polymers can bear one or more substituents, for example alkyl, hydroxyalkyl, alkoxy, acyloxy or carboxyl groups, the alkyl radicals comprising from 1 to 4 carbon atoms.
The nonionic guar gums can be modified or unmodified. The unmodified guar gums are, for example, products sold under the name VIDOGUM GH 175 by the company Unipectine and under the name JAGUAR C by the company Mayhall.
According to the present invention, it is also possible to use nonionic guar gums modified with (C
1
-C
4
)hydroxyalkyl groups, for example hydroxymethyl, hydroxyethyl, hydroxypropyl and hydroxybutyl groups.
These modified guar gums are well known in the art and can be prepared by reacting guar gum with suitable alkylene oxides. The degree of hydroxyalkylation (ratio of the number of alkylene oxide molecules fixed to the initial number of free hydroxyl groups) is preferably from 0.4 tol 0.2.
Such modified nonionic guar gums are sold, for example, under the names JAGUAR HP8, JAGUAR HP60, JAGUAR HP120, JAGUAR DC293 and JAGUAR HP105 by the company Rhóne-Poulenc (Mayhall) or under the name GALACTASOL 4H4FD2 by the company Aqualon.
The biopolysaccharide gums of microbial origin, such as scleroglucan gum or xanthan gum; the gums obtained from plant exudates, such as gum arabic, ghatti gum, karaya gum or gum tragacanth; the algal extracts, such as carrageenans or agar; the plant extracts, such as carob gum or pectins; the alginates; the starches and the hydroxyalkylcelluloses and carboxyalkylcelluloses are well known in the art and are described in particular in the “Handbook of Water Soluble Gums and Resins” by Robert L. Davidson, published by McGraw Hill Book Company (1980), the disclosure of which is hereby incorporated by reference.
Among these gums, the scleroglucans are represented by the products sold by the company Sanofi Bio Industries under the name ACTIGUM CS, and in particular under the name ACTIGUM CS 11, and by the company Alban Muller International under the name AMIGEL.
It is also possible to use other scleroglucans, for example a scleroglucan treated with glyoxal described in patent application FR-A-2 633 940, the disclosure of which is hereby incorporated by reference.
The xanthan gums which can be used as thickeners in the compositions of the present invention are represented, for example, by the products sold under the names KELTROL, KELTROL T, KELTROL TF, KELTROL BT, KELTROL RD and KELTROL CG by the company Nutrasweet Kelco, or under the names RHODICARE S or RHODICARE H by the company Rhodia Chimie.
The hydroxyalkylcelluloses are generally hydroxy(C
1
-C
4
alkyl)celluloses and more particularly hydroxyethylcelluloses. They are available, for example, under the names CELLOSIZE QP3L, CELLOSIZE QP4400H, CELLOSIZE QP30000H, CELLOSIZE HEC30000A or CELLOSIZE Polymer PCG10 by the company Amerchol, under the names NATROSOL 250HHR, NATROSOL 250MR, NATROSOL 250M, NATROSOL 250HHXR, NATROSOL 250HHX, NATROSOL 250HR or NATROSOL HX by the company Hercules or under the name TYLOSE H1000 by the company Hoechst.
The hydroxyalkylcelluloses can also be hydroxypropylcelluloses sold under the names KLUCEL EF, KLUCEL H, KLUCEL LHF, KLUCEL MF or KLUCEL G by the company Aqualon.
Among the carboxyalkylcelluloses which are preferably used is the carboxymethylcellulose which is sold, for example, under the names BLANOSE 7M8/SF, BLANOSE RAFFINÉE 7M, BLANOSE 7LF, BLANOSE 7MF, BLANOSE 9M31F, BLANOSE 12M31XP, BLANOSE 12M31P, BLANOSE 9M31XF, BLANOSE 7H, BLANOSE 7M31 or BLANOSE 7H3SXF by the company Aqualon, under the names AQUASORB A500 and AMBERGUM 1221 by the company Hercules, under the
Legrand Frédéric
Millequant Jean
Elhilo Eisa
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
L'Oreal (S.A.)
Ogden Necholus
LandOfFree
Anhydrous composition for bleaching keratin fibers... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Anhydrous composition for bleaching keratin fibers..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anhydrous composition for bleaching keratin fibers... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2890592