Drug – bio-affecting and body treating compositions – Effervescent or pressurized fluid containing – Organic pressurized fluid
Patent
1996-10-25
2000-10-03
Page, Thurman K.
Drug, bio-affecting and body treating compositions
Effervescent or pressurized fluid containing
Organic pressurized fluid
424 7011, 424 7016, A61K 912, A61K 7075
Patent
active
061269212
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to hair treatment formulations in the form of aqueous dispersions of special polymers.
An attractive-looking hairstyle is today generally regarded as an essential part of a groomed appearance. In the context of current fashion trends, "chick" hairstyles are always those which, with many types of hair, can only be created and maintained for prolonged periods using certain setting agents.
These setting agents, which are generally polymeric compounds, may be incorporated in typical hair cleaning and conditioning formulations. In many cases, however, it is of advantage to use them in the form of special formulations, such as setting lotions or hair sprays.
Now, there have recently been a number of developments in the hair cosmetics field which have created a demand for new setting agents or rather new types of formulation. Many of these developments are not attributable to performance-related disadvantages or inadequacies of known formulations, but for example to environmental factors, to legal requirements or to other "non-technical" causes.
Accordingly, there is a need to develop corresponding formulations which meet consumer expectations in regard to their performance properties, for example spray behavior and drying time in the case of hair sprays.
In particular, there is an increasing demand for a change from formulations based on volatile organic compounds, for example alcohols, to water-based formulations.
It has now been found that hair treatment formulations in the form of aqueous dispersions of certain water-insoluble polymers, which additionally contain a dissolved polymer, are eminently suitable for a number of applications.
DESCRIPTION OF THE INVENTION
Accordingly, the present invention relates to hair treatment formulations containing typical cosmetic ingredients in the form of an aqueous dispersion of an insoluble polymer, characterized in that the polymer has a glass transition temperature of -20 to +70.degree. C. and is essentially formed from monomers selected from the group consisting of esters of acrylic acid, esters of methacrylic acid and styrene and in that the hair treatment formulation additionally contains a water-soluble polymer.
Hair treatment formulations in the form of aqueous solutions or emulsions of polymers containing acrylate monomers are known, for example, from International patent applications WO 94/02112 and WO/01079 and from European patent application O 590 604.
In addition, the use of water-soluble or water-dispersible poly-condensates with glass temperatures above +20.degree. C. in hair treatment formulations is known from DE-OS 42 24 761.
Finally, hair sprays in the form of water-based polyester dispersions are known from publication CB-14B of the Eastmann Chemical Company. These hair sprays have the disadvantage that, at high polymer concentrations, the nozzles of the applicator often become blocked after only a short time, particularly in the case of pump sprays. Accordingly, these polymers can only be used in relatively low concentrations in consumer products so that, when the necessary quantities of polymer are applied to the hair, a large amount of water is applied at the same time.
However, none of the cited documents makes any reference to the particularly advantageous properties of the formulations according to the invention.
The hair treatment formulations according to the invention are present in the form of aqueous dispersions and contain an insoluble polymer.
Aqueous dispersions in the context of the present invention are dispersions of which the outer phase consists predominantly of water. The outer phase may additionally contain other water-miscible solvents, for example ethanol and isopropanol. These other solvents are present in quantities of at most up to 10% by weight, based on the formulation as a whole. In a preferred embodiment, the outer phase contains water as sole solvent. Another preferred embodiment contains no more than 5%, based on the formulation as a whole, of other solvents in the outer
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Emmerling Winfried
Hofmann Hans-Peter
Kade Rainer
Schieferstein Ludwig
Fubara B.
Grandmaison Real J.
Henkel Kommanditgesellschaft auf Aktien
J. Murphy Glenn E.
Jaescke Wayne C.
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