Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions
Reexamination Certificate
2000-10-25
2004-02-10
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
C424S400000, C424S401000, C424S070110, C424S070150, C424S070160
Reexamination Certificate
active
06689346
ABSTRACT:
The present invention relates to a reshapable hair styling composition.
Fixing the hairstyle is an important element in hair styling, and involves maintaining a shaping that has already been carried out, or simultaneously shaping and fixing the hair.
In accordance with the invention, the term “hair styling composition” relates to any kind of hair composition that can be used to effect hair styling, for example fixing compositions, shampoos, conditioners, permanent waving compositions, hair care products, and hair treatment products.
The most prevalent hair styling compositions on the cosmetic market for shaping and/or maintaining the hairstyle are spray compositions comprising a solution, usually alcohol- or water-based, and one or more materials, generally polymer resins. One of the functions of polymer resins is to form links between the hairs, these materials also being called fixatives, in a mixture with various cosmetic adjuvants. This solution is generally packaged either in an appropriate aerosol container, which is pressurized with the aid of a propellant, or in a pump flask.
Other known hair styling compositions include styling gels and mousses, which are generally applied to the wetted hair before brushing or setting it. In contrast to the conventional aerosol lacquers, these compositions have the disadvantage that they do not allow the hair to be fixed in a shape created before their application. In fact, these compositions are essentially aqueous and their application wets the hair and is therefore unable to maintain the initial shape of the hairstyle. In order to shape and fix the hairstyle, therefore, it is necessary to carry out subsequent brushing and/or drying.
Such hair styling compositions all have the same disadvantage that they do not allow the hairstyle to be later modified to a desired shape, which is other than that formed initially, without starting the styling and fixing operations again. Moreover, under various kinds of stress, the hairstyle has a tendency to take on an undesirable permanent set, which cannot easily be modified. Also in the styling process, one desires hair conditioning benefits, such as ease of combing and soft hair feel appearance.
A subject of the invention is a reshapable hair styling composition comprising at least one acrylic copolymer comprising: (a) units derived from at least one monomer chosen from (meth)acrylate esters of C
4
to C
18
straight and branched chain alkyl alcohols, (b) units derived from at least one monomer chosen from (meth)acrylate esters of saturated and unsaturated cyclic alcohols containing 6 to 20 carbon atoms, (c) optionally units derived from at least one monomer chosen from hydrophilic monomers, and (d) optionally units derived from at least one monomer other than (a), (b), and (c) monomers, wherein said composition provides a reshapable effect.
Another subject of the invention is a reshapable hair styling composition comprising at least one acrylic copolymer comprising: (a) from about 10 to about 85 weight percent of units derived from at least one monomer chosen from (meth)acrylate esters of C
4
to C
18
straight and branched chain alkyl alcohols, (b) from about 5 to about 70 weight percent of units derived from at least one monomer chosen from (meth)acrylate esters of saturated and unsaturated cyclic alcohols containing 6 to 20 carbon atoms, (c) from 0 to about 20 weight percent of units derived from at least one monomer chosen from hydrophilic monomers, and (d) optionally units derived from at least one monomer other than (a), (b), and (c) monomers, wherein said composition provides a reshapable effect.
The weight percentages of the (a), (b), and, if used, (c) monomers, are based on the total weight of the monomers used.
Another subject of the invention is a reshapable hair styling composition comprising at least one acrylic copolymer, as described above, wherein said reshapable hair styling composition is in the form of a spray, aerosol, mousse, gel, or lotion.
Another subject of the invention is an aerosol device comprising a vessel, which comprises: (1) an aerosol composition, which provides a reshapable effect and comprises a liquid phase comprising at least one composition comprising at least one acrylic copolymer, as described above, and a propellant, and (2) a dispenser.
Another subject of the invention is a method of cosmetically treating hair, comprising applying to the hair before, during, or after shaping of a hairstyle of said hair a composition comprising at least one acrylic copolymer, as described above, wherein said composition provides a reshapable effect.
Another subject of the invention is a method of reshaping hair, comprising: (1) applying to the hair before, during, or after the initial shaping of the hairstyle of a composition comprising at least one acrylic copolymer, as described above, wherein said composition provides a reshapable effect, and (2) thereafter shaping the hairstyle at least once, wherein no additional composition or heat is added.
Another subject of the invention is a reshapable hair styling composition comprising at least one acrylic copolymer comprising: (a) from about 20 to about 80 weight percent of units derived from ethyl hexyl (meth)acrylate, (b) from about 5 to about 65 weight percent of units derived from isobornyl acrylate, and (c) from about 1 to about 15 weight percent of units derived from (meth)acrylic acid, wherein the ratio of ethyl hexyl (meth)acrylate derived units to isobornyl acrylate derived units ranges from about 0.5:1 to about 6:1, wherein said composition provides a reshapable effect.
In one embodiment of the invention, such reshapable hair styling compositions may be in the form of an aqueous emulsion or dispersion. All emulsions comprise a continuous phase and at least one dispersed phase. The term “dispersion” means generally a multi-phase system where at least one phase contains discrete particles distributed throughout a bulk substance. In this invention, at least a portion of the polymer may exist as the discrete particle in an aqueous phase. Dispersions are possible through the use of certain components that are insoluble in the water system. By “dispersion,” it is also meant that not necessarily the entire polymer needs to be water insoluble; some of the polymer can be soluble in the water mixture. It is preferable that the dispersion remains stable under ambient conditions.
The term “(meth)acrylate” is used to mean both acrylate and methacrylate.
The term “reshapable” hair styling composition means a hair styling composition providing hair styling that can be restored or modified without new material or heat being applied. For example, in order to restore or modify the hairstyle in case of “drooping” or loss of setting (dishevelment), no new materials, such as water or any form of fixing agent, or heat are required. Thus, to provide a “reshapable” effect means to provide a hair styling that can be restored or modified without new material or heat being applied. The efficacy of the composition can be long lasting, such as 10-24 hours, giving rise to a durable styling effect. Other terms, which may be synonymous with reshapable, include repositionable, remoldable, restyleable, rearrangable, and remodelable.
The (a) monomers constitute from about 10 to about 85 weight percent of the total amount of monomers used. In one embodiment, they may constitute from about 20 to about 80 weight percent of the total amount of monomers used. The (a) monomers may be chosen from (meth)acrylate esters of C
4
to C
18
straight and branched chain alkyl alcohols. In one embodiment, the (a) monomers may be is chosen from isooctyl (meth)acrylate, n-butyl (meth)acrylate, isobutyl (meth)acrylate, t-butyl (meth)acrylate, 2-methylbutyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, n-octyl (meth)acrylate, isononyl (meth)acrylate, lauryl (meth)acrylate, octadecyl (meth)acrylate, and mixtures thereof. In another embodiment, the (a) monomers may be chosen from 2-ethylhexyl acrylate, n-butyl acrylate, isooctyl acrylate, 2-methylbutyl acrylate, and mixt
Rollat Isabelle
Samain Henri
Evans Charesse
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
L'Oreal
Page Thurman K.
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