Drug – bio-affecting and body treating compositions – Effervescent or pressurized fluid containing – Organic pressurized fluid
Reexamination Certificate
1999-03-29
2002-02-05
Bawa, Raj (Department: 1619)
Drug, bio-affecting and body treating compositions
Effervescent or pressurized fluid containing
Organic pressurized fluid
C424S045000, C424S070110, C424S070130, C424S070150, C424S070160, C424SDIG001, C424SDIG002
Reexamination Certificate
active
06344183
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to novel aerosol hair cosmetic compositions, particularly hair fixative compositions, which contain nonionically derivatized starches and to a process for setting hair utilizing such compositions.
In their most basic form, hair cosmetic compositions contain a film-forming polymer, which acts as the cosmetic, and a delivery system, which is usually one or more alcohols, a mixture of alcohol and water, or water. In the case of aerosol delivery, the delivery system will also contain a propellant, typically a volatile hydrocarbon.
The hair setting or styling process ordinarily involves the application of an aqueous solution or dispersion of one or more film-forming materials to combed hair which has previously been wettened or dampened whereupon the treated hair is wound on curlers or otherwise styled and dried. In the alternative, application of this solution or dispersion may be to hair which has already been styled and dried. Once the aqueous solution or dispersion has dried, the individual hairs will have a film deposited thereon which presence will prolong the retention of curls or other desired configurations in the user's hair. Furthermore, the presence of such films will impart such desirable properties as body and smoothness.
To be effective, the film-forming ingredients of a hair cosmetic composition preferably meet a number of requirements. The film derived from these ingredients should be flexible, yet possess strength and elasticity. The ingredients should display good adhesion to hair so as to avoid dusting or flaking off with the passage of time or when the hair is subjected to stress; should not interfere with the combing and brushing of the hair; should remain free of tack or gumminess under humid conditions; should be clear, transparent, and glossy, and should maintain clarity upon aging. Further, the ingredients should maintain good anti-static properties and should be easily removable by washing with water and either a soap or shampoo.
Many film-forming agents have been used in hair cosmetic compositions including, for example, a colloidal solution containing a gum such as tragacanth or a resin such as shellac. The films formed of these materials are, however, quite brittle and the form holding the setting is easily broken if the hair is disturbed. This not only reduces the hair holding power of the material, but also leads to undesirable flaking. Further, some of these film-formers, particularly the resins, are water insoluble and therefore not easily removed with water and soap or shampoo.
Starches are often preferred over resins as they are more cost effective and natural. Hair cosmetic compositions which contain starches are also known in the art. For example, GB 1,285,547 discloses a hair setting composition containing a highly substituted cationic starch having an amylose content of more than 50% by weight. EP 487 000 discloses cosmetic compositions which contain enzymatically degraded optionally crosslinked starches. However, such derivatives are not significantly soluble in water.
Due to environmental regulations controlling the emission of volatile organic compounds (VOCs) into the atmosphere, VOC emissions have been restricted to 80% in some states, and will soon be restricted to 55% in California. VOC is measured as a wt/wt% based upon the hair cosmetic formulation. As used herein, a volatile organic compound containing from 1 to 10 carbon atoms, which has a vapor pressure of at least 0.1 mm Hg at 20° C., and is photochemically active. Water is generally substituted for at least a portion of the volatile organic compounds and so has become a greater component in hair cosmetic compositions.
Many fixatives, particularly starches, are incompatible with water in that they are not fully soluble, resulting in starch precipitates which may clog aerosol valves and produce poor spray aesthetics. Further, many starch fixatives are also incompatible with propellant. Surprisingly, it has now been discovered that nonionically derivatized starches are useful in aerosol hair cosmetic compositions with low volatile organic compounds in that they provide a clear solution with a low viscosity, good spray aesthetics, improved humidity resistance, and good fixative properties.
SUMMARY OF THE INVENTION
The present invention is directed to low volatile organic compound aerosol hair cosmetic compositions which contain nonionically derivatized, particularly propylene oxide derivatized, starches. Derivatized, as used herein, is intended to mean chemically modified via a reagent. The nonionically derivatized starch may be further hydrolyzed, particularly enzymatically hydrolyzed by at least one endo-enzyme. In addition, the nonionically derivatized starch may be ionically modified, particularly by octenyl succinic anhydride (OSA). Use of such starches is novel and advantageous in that they provide a clear solution with a low viscosity, and good spray characteristics. Further, the resultant composition provides a clear film which is not tacky, has good hold, and improved humidity resistance.
The present hair cosmetic composition contains by weight from about 0.5 to about 15% of the instant starch, from about 5 to about 55% of a propellant, from zero to about 50% of a solvent, and sufficient water to bring the composition up to 100%.
An object of this invention is to provide a novel hair cosmetic composition which contains nonionically derivatized starches and low volatile organic compounds.
Another object of this invention is to provide a novel hair cosmetic composition which contains nonionically derivatized starches which have been hydrolyzed.
Still another object of this invention is to provide a novel hair cosmetic composition which contains starches which have been derivatized with propylene oxide and enzymatically hydrolyzed.
Yet another object of this invention is to provide a novel hair cosmetic composition which contains starches which have been nonionically derivatized, hydrolyzed, and ionically modified.
A further object of this invention is to provide a novel hair cosmetic composition which contains starches which have been derivatized with propylene oxide, enzymatically hydrolyzed and modified with octenyl succinic anhydride.
A still further object of this invention is to provide a novel hair cosmetic composition which has improved humidity resistance, superior stability and contains low volatile organic compounds.
A yet further object of this invention is to provide a novel hair cosmetic composition which contains starch which has been derivatized and coprocessed with polyvinyl pyrrolidone.
These and other objects of the present invention will become apparent to one skilled in the art from the following detailed description and examples below.
DETAILED DESCRIPTION OF THE INVENTION
The present invention is directed to aerosol hair cosmetic compositions, i.e., hair sprays, which contain nonionically derivatized starches, particularly propylene oxide derivatized starches, in a low or no volatile organic compound (hereinafter VOC) solution, particularly less than 55% VOC, most particularly less than 35% VOC, by weight of the hair setting composition. The starch may be additionally hydrolyzed, particularly enzymatically hydrolyzed. Further, the starch may be modified using ionic substituents. Use of such starches is novel and advantageous in that they provide a clear solution with a low viscosity, and good spray characteristics. Further, the resultant composition provides a clear film which is not tacky and good curl retention.
The hair cosmetic composition of the instant invention contains a fixative effective amount of a nonionically derivatized starch, particularly from about 0.5 to about 15% starch, more particularly from about 2 to about 10% by weight; from about 5 to about 55% of a propellant, particularly from about 5 to about 40%, from zero to about 50% of a solvent, particularly from about 5 to about 35% by weight; and sufficient water to bring the composition to 100%.
All starches and flours (he
Altieri Paul A.
Cottrell Ian W.
Henley Matthew J.
Paul Charles W.
Solarek Daniel B.
Bawa Raj
Kaiser Karen G.
National Starch and Chemical Investment Holding Corporation
LandOfFree
Aerosol hair cosmetic compositions containing non-ionically... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Aerosol hair cosmetic compositions containing non-ionically..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aerosol hair cosmetic compositions containing non-ionically... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2971051