Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions – Polymer containing
Reexamination Certificate
1999-05-07
2002-05-28
Bawa, Raj (Department: 1616)
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
Polymer containing
C424S070100, C424S070120, C424S070160, C424S070220, C424S047000, C424SDIG002, C514S063000, C514S945000
Reexamination Certificate
active
06395264
ABSTRACT:
BACKGROUND OF THE INVENTION
Regulations and laws designed to protect the environment, are leading to the production of hair care spray products which have lower volatile organic compounds (VOC) content than the current commercial products.
This invention relates to 55% VOC (and lower VOC) hair spray compositions that provide hold and feel properties similar to or better than that of the current 80% VOC hair sprays. The performance characteristics of hair sprays suffer as the VOC level is reduced from 80% to 55% in the product. Therefore, maintaining or improving the performance characteristics of 80% VOC product in 55% VOC (and lower VOC) products affords hairspray products which have good characteristics and are more environmentally friendly.
SUMMARY OF THE INVENTION
As noted above, the performance characteristics of hair sprays generally suffer as the VOC level is reduced from 80% to 55% in the product. The purpose of this invention is to at least maintain, if not improve, the performance characteristics of the 80% VOC system in the 55% VOC product.
In the present invention, the deterioration of the spray characteristics of a hydroalcoholic solution containing the hair spray resin which occurred as the alcohol content was reduced from 80 to 55% was offset by incorporation of a unique combination of hydrocarbon based surfactants and an organic salt. The same benefit can be obtained in aqueous systems.
In the present invention, the hydrocarbon surfactant is selected from the group consisting of: sodium dioctyl sulfo succinate, sodium dodecyl sulfate, cocoamidopropyl betaine, and sodium laureth sulfate, and the like.
In the present invention, the organic salt is selected from the group consisting of: sodium benzoate, magnesium acetate, and the like.
The invention relates to an aqueous or hydroalcoholic, non-aerosol or aerosol hair spray composition containing a water soluble or dispersable fixative polymer in an amount from about 1% to about 40% by weight of the composition, a neutralizing agent in an amount from about 0.1 to about 10 wt %, a hydrocarbon based surfactant in an amount from about 0.01% to about 5% by weight, a salt from about 0.01% to about 10% by weight, alcohol from about 10% to about 90% by weight, a propellant from about 0 to about 80% by weight, and water from about 10% to about 90% by weight of the composition.
U.S. patents in this area of technology are:
U.S. Pat. Nos. 5,374,420 and 5,164,177.
DETAILED DESCRIPTION OF THE INVENTION
As used herein, % means weight % of the total composition unless otherwise indicated.
The starting materials set forth herein are either known or can be prepared according to known methods. The compositions of the invention can be prepared either by known methods or by methods analogous to known methods.
As noted above, in the present invention, the deterioration of the spray characteristics of a hydroalcoholic solution containing the hair spray resin which occurred as the alcohol content was reduced from 80 to 55% was offset by incorporation of a unique combination of hydrocarbon based surfactants and an organic salt. The same benefit can be obtained in aqueous systems.
In the present invention, the hydrocarbon surfactant is selected from the group consisting of: sodium dioctyl sulfo succinate, sodium dodecyl sulfate, cocoamidopropyl betaine, and sodium laureth sulfate, and the like. In fact any hydrocarbon based surfactant suitable for use in hairspray compositions may be employed in the compositions of the invention. Other examples of anionic surfactants are sodium dinonyl sulfo succinate, sodium decyl sulfate, sodium alpha olefin sulfonate and the like. Nonionic and cationic surfactants may also be employed.
In the present invention, the organic salt is selected from the group consisting of: sodium benzoate, magnesium acetate, sodium acetate, sodium citrate, potassium acetate, sodium salicylate, sodium tartrate, sodium phenylsalicylate, sodium oxalate, sodium adipate, sodium butyrate, sodium caprate, sodium caproate, sodium maleate, sodium malate, sodium malonate, sodium phthalate, sodium propionate, sodium pyruvate, sodium fumarate, and the like.
In the present invention, the neutralizing agent is selected from the group consisting of: 2-amino, 2-methyl, 1-propanol, 2-amino, 2-methyl, 1,3-propanediol, dimethyl stearamine, histidine, tris(hydroxymethyl)aminomethane, triethanol amine, sodium hydroxide, potassium hydroxide and the like.
In the present invention, the soluble or dispersible fixative polymer is selected from the group consisting of: vinyl and acrylic based resins and polyurethane resins. Specific resins include, but are not limited to, acrylamide copolymers, acrylate copolymers, which may or may not be modified by introduction of a quaternary ammonium group. Other fixative resins are described in copending U.S. patent application Ser. No. 08/717,113 to Bhatt et al , filed Sep. 20, 1996, which is hereby incorporated by reference. The use of resins or polymers in hairsprays is known as summarized in Grollier et al U.S. Pat. No. 4,445,521 which is hereby incorporated by reference. The molecular weight of the polymer has a preferred range of about 10,000 to about 1 million Daltons, a more preferred range is about 20,000 to about 500,000 Daltons and the most preferred range is about 30,000 to about 300,000.
In the present invention, the inorganic salt is selected from the group consisting of chloride, sulfate, and nitrate salts of sodium, magnesium and ammonium and the like.
In the present invention, the alcohol, if present, is selected from the group consisting of: ethanol, isopropanol, and the like.
In the present invention, the propellant, if present, is selected from the group consisting of: trichlorofluoromethane, dichlorodiflouromethane, dichlorotetraflouromethane, methyl acetate, dimethyl ether, propane, n-butane, isobutane and mixtures thereof, and like propellants.
The compositions of the present invention also include silicone conditioning agents such as cyclomethicone, dimethicone copolyol and the like.
Other optional ingredients which can be included in hairspray compositions of the invention are preservatives such as benzyl alcohol, methyl paraben, propyl paraben, or imidazolidinylurea, cationic conditioners such as cetyl ammonium chloride, stearyl dimethyl benzyl ammonium chloride, coloring agents, chelating agents, such aminetetraacetic acid, plasticizers such as glycols, phthalate esters and glycerines, silicones, emollients, lubricants and penetrants such as various lanolin compounds, protein hydrosylates, and other protein derivatives ethylene adducts and polyoxyethylene cholesterol.
Non-Aerosol Compositions
The invention relates to an aqueous or hydroalcoholic, non-aerosol or aerosol hair spray composition containing a water soluble or dispersable fixative polymer in an amount from about 1% to about 40% by weight of the composition, a neutralizing agent in an amount from about 0.1 to about 10 wt %, a hydrocarbon based surfactant in an amount from about 0.01% to about 5% by weight, a salt from about 0.01% to about 10% by weight, alcohol from about 10% to about 90% by weight and water from about 10% to about 90% by weight of the composition.
Preferred ranges of a water soluble or dispersible fixative polymer are about 1 to about 40% by weight of the composition, more preferably about 2 to about 20%, and most preferably about 3 to about 10%.
Preferred ranges of a neutralizing agent are about 0.1 to about 10% by weight of the composition, more preferably about 0.25% to about 5%, and most preferably about 0.5% to about 2.5%.
Preferred ranges of a hydrocarbon based surfactant are about 0.01% to about 5% by weight of the composition, more preferably about 0.05% to about 2.5%, and most preferably about 0.1% to about 1.0%.
Preferred ranges of the salt about 0.01 to about 10% by weight of the composition, more preferably about 0.05% to about 5%, and most preferably about 0.1% to about 1%.
Preferred ranges of silicone conditioning agents are 0.001 to about 10% by weight of the composition, preferably from 0.01
Dabkowski Diane
Nekludoff Natalia
Vasudevan Tirucherai
Bawa Raj
Boxer Matthew
Unilever Home & Personal Care USA , division of Conopco, Inc.
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