Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing
Reexamination Certificate
2000-04-06
2003-06-24
Gupta, Yogendra N. (Department: 1751)
Bleaching and dyeing; fluid treatment and chemical modification
Dyeing involving animal-derived natural fiber material ,...
Hair dyeing
C008S406000, C008S407000, C008S410000, C008S411000, C008S412000, C008S426000
Reexamination Certificate
active
06582477
ABSTRACT:
The present invention relates to dyeing compositions comprising, in a medium appropriate for dyeing, at least one oxidation dye precursor and/or one or more couplers, a ketose as reducing agent and at least one laccase as oxidizing agent, to the use of the compositions for the oxidation dyeing of keratin fibers, and in particular human keratin fibers such as the hair, to dyeing processes using the compositions, and to dyeing devices using the compositions.
It is known to dye keratinous fibers, and in particular the hair, with dyeing compositions comprising oxidation dye precursors generally known as “oxidation bases,” in particular ortho- or para-phenylenediamines, ortho- or para-aminophenols and heterocyclic bases.
Oxidation dye precursors are compounds, initially colorless or only slightly colored, which develop their dyeing power within the individual hair in the presence of an oxidizing agent. The oxidizing agent used is generally hydrogen peroxide. The formation of the colored compounds results either from a condensation of the “oxidation bases” with themselves or from a condensation of the “oxidation bases” with coloring-modifying compounds or “couplers,” which are generally present in the dyeing compositions used in oxidation dyeing and which are represented more particularly by meta-phenylenediamines, meta-aminophenols, meta-diphenols and some heterocyclic compounds.
The variety of the molecules involved, which are composed, on the one hand, of the “oxidation bases” and, on the other hand, of the “couplers,” makes it possible to obtain a rich palette of colors.
The oxidation coloring of keratinous fibers can also be carried out using different oxidizing systems than hydrogen peroxide systems, such as enzymatic systems. For example, it is known in U.S. Pat. No. 3,251,742 and Patent Applications FR-A-2 112 549, FR-A-2,694,018, EP-A-0,504,005, WO 95/07988, WO 95/33836, WO 95/33837, WO 96/00290, WO 97/19998 and WO 97/19999, the disclosures of which are incorporated by reference herein, to dye keratinous fibers with compositions comprising at least one oxidation dye in combination with enzymes of the laccase type, these compositions being brought into contact with atmospheric oxygen. These enzyme systems are advantageous because it has been observed that aqueous hydrogen peroxide solution can result in damage to the hair fiber and, in addition, in partial attack on the melanin of the hair, which results in the fiber becoming lighter in color.
It has also been found that, in some cases, laccases make it possible to obtain satisfactory oxidation colorings by using only couplers, without oxidation bases. Thus, in the present invention, the term “oxidation dye” covers oxidation dye precursors and/or couplers.
In order to be able to preserve oxidation dyes, i.e., oxidation dye precursors and/or couplers, it is necessary to combine them with a reducing agent. However, the inventor has found that these reducing agents generally slow down the absorption of the dyes on the fibers, which is reflected by less luminous shades and less intense colorings. In order to obtain an equivalent chromaticity, it is then necessary to use larger amounts of dyes.
Furthermore, numerous reducing agents used until now have an inhibiting effect on the activity of laccase.
After much research carried out in this field, the inventor has just discovered that the use of a ketose as reducing agent when a laccase is used as oxidizing agent makes it possible to solve the above-mentioned problems. This is because it has been found that ketoses do not inhibit the activity of laccase. It has also been found, surprisingly, that the mixture thus produced does not slow down the absorption of the oxidation dyes on the hairs.
Furthermore, these compositions give rise to more chromatic (more luminous) shades and to more intense colorings in comparison with equivalent compositions comprising conventional reducing agents and oxidizing agents. The colorings obtained also exhibit good resistance to perspiration, to light and to shampoos.
The invention also makes it possible to decrease the amount of coloring active materials used in dyeing compositions, in comparison with conventional techniques known in the prior art.
A subject of the present invention is thus the use of a ketose as reducing agent, in an amount ranging from 0.1 to 15% by weight with respect to the total weight of the composition, and of a laccase as oxidizing agent in oxidative dyeing.
Another subject of the invention relates to a process for dyeing keratinous fibers and in particular human keratinous fibers, such as the hair, which comprises:
applying, to the fibers, a dyeing composition (A) comprising, in a medium appropriate for dyeing, at least one oxidation dye and a ketose as reducing agent, in an amount ranging from 0.1 to 15% by weight with respect to the total weight of the composition (A), and
developing the color, in the presence of air, in an alkaline, neutral or acidic medium, using a laccase as oxidizing agent, the laccase either being incorporated in the composition (A), in which case the composition (A) is stored with air excluded, or in a composition (B), in which case the compositions (A) and (B) are mixed immediately before use or applied one after the other to the keratinous fibers.
The oxidation dye is preferably an oxidation dye precursor with optionally one or more couplers.
The oxidation dye can also be composed of one or more couplers, i.e., without oxidation dye precursors.
In a preferred form of the invention, the ketose is present in proportions ranging from 5 to 10% with respect to the total weight of the composition (A).
The ketoses according to the present invention are in particular C
3
-C
8
ketoses, and preferably C
6
ketoses (ketohexoses).
In particular, mention may be made, as examples of ketoses, of xylulose, ribulose, fructose, sedoheptulose, tagatose, sorbose and psicose. Their optical isomers (or enantiomers) in the D or L form can be used in the present invention, whether in the pure form (D or L) or in the paired form (D and L).
Fructose (D and/or L form) is particularly preferred.
The laccase or laccases used in the process according to the invention can be chosen in particular from laccases of plant origin, animal origin, fungal origin (yeasts, moulds or mushrooms) and bacterial origin, it being possible for the source organisms to be mono- or multicellular. The laccase or laccases can also be obtained by biotechnology.
Mention may be made, among the laccases of plant origin which can be used according to the invention, of the laccases produced by plants carrying out chlorophyll synthesis, as indicated in Application FR-A-2,694,018, the disclosure of which is incorporated by reference herein, such as those which are found in extracts of the Anacardiaceae, such as, for example, extracts of
Magnifera indica, Schinus molle
and
Pleiogynium timoriense
, and in extracts of the
Podocarpaceae, Rosmarinus
off.,
Solanum tuberosum
, Iris sp., Coffea sp.,
Daucus carrota, Vinca minor, Persea americana, Catharenthus roseus
, Musa sp.,
Malus pumila, Gingko biloba, Monotropa hypopithys
(Indian pipe), Aesculus sp.,
Acer pseudoplatanus, Prunus persica
and
Pistacia palaestina.
Mention may be made, among the laccases of fungal origin optionally obtained by biotechnology which can be used according to the invention, of the laccase or laccases resulting from Polyporus versicolor,
Rhizoctonia praticola
and
Rhus vernicifera
, as indicated in Applications FR-A-2,112,549 and EP-A-504,005, the disclosures of which are incorporated by reference herein, and those laccases disclosed in Patent Applications WO 95/07988, WO 95/33836, WO 95/33837, WO 96/00290, WO 97/19998 and WO 97/19999, the contents of which form an integral part of the present description and the disclosures of which are incorporated by reference herein, such as, for example, those resulting from Scytalidium,
Polyporus pinsitus, Myceliophtora thermophila, Rhizoctonia solani, Pyricularia orizae
, and their variants. Mention may also be made of those laccase
Elhilo Eisa
Finnegan Henderson Farabow Garrett & Dunner LLP
Gupta Yogendra N.
L'Oreal (S.A.)
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