Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions – Polymer containing
Reexamination Certificate
2000-07-27
2003-02-11
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
Polymer containing
C424S070100, C424S045000, C424S047000
Reexamination Certificate
active
06517821
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 in 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, in a cosmetic vehicle appropriate for hair, at least one polyurethane urea comprising a residue of at least one sulfonated polyol.
Another subject of the invention is a reshapable hair styling composition comprising, in a cosmetic vehicle appropriate for hair, at least one dispersion comprising at least one polyurethane urea comprising a residue of at least one sulfonated polyol.
Another subject of the invention is a reshapable hair styling composition comprising, in a cosmetic vehicle appropriate for hair, at least one colloidal dispersion comprising at least one polyurethane urea comprising a residue of at least one sulfonated polyol.
Another subject of the invention is a reshapable hair styling composition comprising, in a cosmetic vehicle appropriate for hair, at least one dispersion comprising at least one sulfonated polyurethane urea being obtained by reacting:
(a) at least one sulfonated polyol;
(b) at least one non-sulfonated polyol;
(c) at least one polyisocyanate chosen from aliphatic polyisocyanates, having 1 to 25 carbon atoms, and cycloaliphatic polyisocyanates, having 3 to 25 carbon atoms; and
(d) excess water, wherein:
the sulfonated polyurethane urea has been chain-extended.
Another subject of the invention is a reshapable hair styling composition comprising, in a cosmetic vehicle appropriate for hair, at least one dispersion comprising at least one sulfonated polyurethane urea being obtained by reacting:
(a) at least one sulfonated polyol;
(b) at least one non-sulfonated polyol;
(c) at least one polyisocyanate chosen from aliphatic polyisocyanates, having 1 to 25 carbon atoms, and cycloaliphatic polyisocyanates, having 3 to 25 carbon atoms; and
(d) excess water, wherein:
the sulfonated polyurethane urea has been chain-extended with water;
the reaction product of (a), (b), and (c) has an isocyanate to hydroxyl ratio ranging from about 1.3:1 to about 2.5:1; and
the reaction product of (a), (b), and (c) with (d) has a sulfonate equivalent weight of from about 1000 to about 8500 and comprises a polyurea segment of the following formula:
wherein z is an integer from 0 to 6; and R
3
is chosen from aliphatic groups, having 1 to 25 carbon atoms, and cycloaliphatic groups, having 3 to 25 carbon atoms, derived from aliphatic and cycloaliphatic polyisocyanates.
Another subject of the invention is a reshapable hair styling composition comprising, in a cosmetic vehicle appropriate for hair, the above described dispersion comprising at least one sulfonated polyurethane urea, wherein the dispersion is a colloidal dispersion.
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, and remodellable.
“Aliphatic” means a non-aromatic group, which can be a straight or branched chain alkylene group of 1 to 25 carbon atoms wherein these groups may be optionally substituted, for example with a group chosen from ether, ester, and cycloaliphatic functional groups.
“Colloidal dispersion” means a discrete distribution of particles having an average size of less than about 1 micron, typically less than about 500 nanometers, in an aqueous media (water).
“Cycloaliphatic” means a non-aromatic, optionally substituted cyclic group of 3 to 25 carbons, wherein one to three carbon atoms each may be optionally replaced with a heteroatom, for example nitrogen or oxygen, or C(O). The cycloaliphatic group may be optionally substituted, for example with a group chosen from alkyl, ether, and ester functional groups.
“Polyurea” means a polymer obtained by a polymerization reaction in which the mechanism for chain growth is entirely the formation of urea and biuret linkages by the reaction of isocyanate groups with amine or urea groups, with urea linkage formation predominating.
“Stable aqueous colloidal dispersion” means a discrete distribution of particles having an average size of less than about 1 micron, typically less than about 500 nanometers, in an aqueous media (water) that do not agglomerate in the absence of agitation (either continuous or intermittent).
“Sulfonate equivalent weight” means the sum of the atomic weights of all of the atoms in the sulfopolyurea divided by the number of sulfonate groups contained in the polymer molecule.
“Sulfopolyurea” means a high molecular weight polyurea containing a plurality of sulfonate groups covalently bonded to and pendant from the polymer chain.
“Sulfonated polyurethane urea” refers to a polymer containing sulfonate groups and a plurality of urea linkages and urethane linkages.
In one embodiment of the invention, the sulfonated polyurethane ureas of the present invention are obtained by reacting: (a) at least one sulfonated polyol, (b) at least one non-sulfonated polyol, (c) at least one polyisocyanate chosen from aliphatic and cycloaliphatic polyisocyanates, and (d) excess water, wherein the reaction product of (a), (b), and (c) with (d) comprises a polyurea segment of the following formula:
wherein z is an integer from 0 to 6; and R
3
is chosen from aliphatic groups, having 1 to 25 carbon atoms, and cycloaliphatic groups, having 3 to 25 carbon atoms, derived from the aliphatic and cycloaliphatic polyisocyanates. The
Rollat Isabelle
Samain Henri
Finnegan Henderson Farabow Garrett & Dunner LLP
Howard S.
L'Oreal
Page Thurman K.
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