Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions
Reexamination Certificate
1999-11-03
2003-04-29
Travers, Russell (Department: 1619)
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
Reexamination Certificate
active
06555101
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to the use of preparations containing special combinations of active substances for the cleaning and care of keratin fibers, more particularly hair.
The washing and care of hair is an important part of personal hygiene. Both the washing and care of hair, for example with shampoos, and the decorative finishing of hair styles, for example by coloring or permanent waving, are measures which affect the natural structure and properties of hair. For example, the wet and dry combability of hair, its hold and its body can be unsatisfactory following such a treatment. In addition, the hair can have an increased number of split ends or can “fly” as a result of electrostatic charging.
Accordingly, it has long been standard practice to subject the hair to a special aftertreatment. To this end, the hair is treated, normally by rinsing, with special active substances, for example quaternary ammonium salts or special polymers. Combability, hold and body are improved and the number of split ends is reduced by this treatment, depending on the formulation used. In addition, increased efforts have recently been made to find active substances or combinations of active substances which could be directly incorporated in various hair treatment preparations and which would thus eliminate the need for the additional aftertreatment step.
Additions of cationic polymers to hair treatment preparations generally lead to an improvement in wet and dry combability. Additions of amphoteric polymers produce significant improvements in wet combability, but generally have little effect on dry combability.
Whereas the improvement in wet combability, i.e. a reduction in wet combing work, is desirable in every case, the circumstances regarding dry combability are more complicated. Low combing work values characterize an improvement in combability. However, if combing work is overly reduced, the hair loses body and hold so that, in extreme cases, certain styles can no longer be created. Accordingly, a certain increase in dry combing work may be entirely desirable, above all in the case of relatively intricate styles, in order to improve style retention. In many cases, however, this involves increased electrostatic charging of the hair which leads to the unwanted phenomenon of “flying” of the hair.
Accordingly, there is still a need for improved active substances and combinations of active substances for the aftertreatment of hair or for incorporation in known hair-washing and hair-care preparations.
DESCRIPTION OF THE INVENTION
It has now surprisingly been found that active-substance combinations of certain polymers (A), special alkyl polyglycosides (B) and fatty compounds or waxes (C) can make a considerable contribution towards solving this problem. The hair treated with such combinations shows very good wet combability while its dry combability is in a very favorable range for style retention without electrostatic charging and hence “flying” of the hair being observed to any significant extent.
Accordingly, the present invention relates to the use of a water-based preparation which is characterized by a content of
a) polymers (A) selected from the group of cationic, amphoteric, zwitterionic and nonionic polymers,
b) alkyl polyglycosides (B) corresponding to general formula (I):
RO—(Z)
x
(I)
in which
R is an alkyl radical containing 6 to 22 carbon atoms,
Z is a mono- or oligosaccharide,
x is a number of 1.1 to 5,
or adducts thereof with 1 to 10 molecules of ethylene oxide and/or propylene oxide and
c) fatty compounds and/or waxes (C)
for the washing and care of keratin fibers, more particularly human hair.
All three classes of active substance are well-known constituents of hair treatment preparations.
Combinations of two of these three classes of active substance are also known. Thus, a shampoo containing a glucoside alkyl ether (Triton CG 110) and polyethoxylated lauryl alcohol in addition to a cationic polymer (Gafquat 755) is known from an Example of DE-OS 32 16 687. Combinations of cationic polymers and alkyl saccharides are also known from EP-A1-337 354.
Finally, combinations of alkyl glycosides, cationic or zwitterionic polymers and fatty alcohols or mono- and triglycerides in permanent wave formulations are known from Examples of hitherto unpublished German applications P 42 32 512.9, P 42 32 506.4, P 42 34 413.1 and P 42 34 405.0. Corresponding combinations for shampoos and tinting shampoos are known from Examples of P 42 32 506.4.
However, there are no indications in this prior art of the advantageous effects obtained by using the three-component combination of active substances according to the invention in preparations for the washing and care of keratin fibers, more particularly hair. In the context of the invention, “hair-care preparations” are only understood to be preparations which help to (re)establish natural properties of hair, such as good combability, style retention, body, etc. This expression specifically does not include permanent wave preparations, hair dyes, tinting shampoos and hair setting preparations which alter the appearance of the hair for decorative purposes.
The preparations used in accordance with the invention preferably contain 0.1 to 3% by weight of polymers (A), 0.01 to 10% by weight of alkyl polyglycosides (B) and 0.5 to 20% by weight of fatty compounds or waxes (C), based on the preparation as a whole.
The first component of the active-substance combination according to the invention is selected from the group of cationic, amphoteric, zwitterionic and nonionic polymers.
The cationic polymers suitable for use in accordance with the invention contain cationic groups within the polymer skeleton. These groups may be part of the polymer chain, although they may also be positioned inside chains which are attached to a main chain by intermediate members. Typical cationic groups contain quaternary nitrogen or phosphorus atoms. Groups containing quaternary nitrogen atoms are preferred. The quaternary nitrogen atoms may carry four different substituents or partly the same substituents and may also be part of a ring system. Preferred cationic groups are ammonium and imidazolinium groups.
If the ionic groups are situated in the side chains, the polymers are synthesized from compounds which, in addition to at least one cationic group, contain at least one polymerizable group and are free from anionic groups.
The polymerizable group is preferably a vinyl group. However, cationic polymers in which the main polymer chain is made up, for example, of glycosides or is protein-like in character may also be used.
Cationic copolymers containing at least one nonionic monomer in addition to the cationic monomers are also preferred for the purposes of the invention. Suitable nonionic monomers are, for example, vinyl pyrrolidone, vinyl, acetate, acrylamide, methacrylamide, methyl acrylate, ethyl acrylate, methyl methacrylate and ethyl methacrylate. Vinyl pyrrolidone is a particularly preferred nonionic monomer.
Several cationic polymers suitable for hair-care purposes are known to the expert and are available as commercial products.
Examples of such polymers are:
Quaternized cellulose derivatives of the type commercially available as Celquat® and Polymer JR®. The compounds Celquat H 100, Celquat L 200 and Polymer JR®400 are preferred quaternized cellulose derivatives.
Quaternized guar derivatives of the type commercially available as Cosmedia Guar® and Jaguar®. Preferred guar derivatives are, for example, Cosmedia Guar® C-261 and Jaguars C 13-S.
Copolymers of vinyl pyrrolidone with quaternized derivatives of dialkyl aminoacrylate and methacrylate, such as for example vinyl pyrrolidone/dimethyl aminomethacrylate copolymers quaternized with diethyl sulfate. Compounds such as these are commercially available as Gafquat®734 and Gafquat®755.
Copolymers of vinyl pyrrolidone with vinyl imidazolinium methochloride of the type commercially available as Luviquat®.
Polymeric dimethyl diallyl ammonium salts and copolymers thereof with esters and
Goebels Dagmar
Hensen Hermann
Kahre Joerg
Mueller-Kirschbaum Thomas
Tesmann Holger
Berman Alysia
Drach John E.
Henkel Kommanditgesellschaft auf Aktien
Travers Russell
Trzaska Steven J.
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