Drug – bio-affecting and body treating compositions – Effervescent or pressurized fluid containing – Organic pressurized fluid
Patent
1989-08-23
1991-08-06
Page, Thurman
Drug, bio-affecting and body treating compositions
Effervescent or pressurized fluid containing
Organic pressurized fluid
424 45, 424 61, 424 70, 424 71, 8426, A61K 700
Patent
active
050376322
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to an agent to set and care for hair, containing tetraoxyethylene lauryl ether and a cationic copolymer of vinylimidazolium methochloride and vinyl pyrrolidone.
Usually agents to set and care for hair consist of solutions of film-forming natural or synthetic polymers. Such natural polymers are shellac, alginates, gelatines, pectines, chitosan salts, and cellulose derivatives. Synthetic polymers that can be used are, for example, polyvinylpyrrolidone, polyvinyl acetate, polyacryl compounds such as acrylic acid or methacrylic acid polymers, basic polymers of esters of these two acids with aminoalcohols or the salts or quarternization products of these basic polymers, polyacrylnitrile, and copolymers of such compounds, for example, polyvinylpyrrolidone vinyl acetate or polyvinylpyrrolidone dimethylaminoethylmethacrylate.
In addition to the foregoing, agents used to care for hair and to strengthen a set in order to improve wet combability and the feel of the hair, particularly of damaged hair, frequently contain monomer quaternary ammonium compounds such as, for example, alkyltrimethylammonium chlorides, dialkylmethyl- ammonium chlorides, alkyldimethylbenzylammonium chlorides, and alkylpyridinium chlorides.
However, additives containing these kinds of quaternary ammonium compounds reduce the physiological compatibility of such preparations, in particular with regard to the eyes.
Our own DE-OS 34 01 037 describes a cosmetic agent for caring for and strengthening the hair comprising tetraoxyethylene laurylether and a quarternized copolymer of vinylpyrrolidone and dimethylaminoethylmethacrylate, in which an addition of such quarternary ammonium compounds is not required.
However, the hair-conditioning properties of these agents are not completely satisfactory, particularly in the case of damaged hair (see test example 1). Furthermore, because of the high price of the quaternized copolymers of vinylpyrrolidone and dimethylamino ethylmethylacrylate that are used, this agent is comparatively costly.
In contrast to this, it has now been found that a simultaneously outstanding conditioning and good strengthening of the hair can be achieved by the use of a synergistic combination of tetraoxyethylene lauryl ether and a cationic copolymer of vinylimidazolium methochloride and vinylpyrrolidone.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide an agent for strengthening a hairdo and care of hair which is based on an aqueous, alcoholic or aqueous-alcoholic solution of a quaternized copolymer of vinylpyrrolidone and tetraoxyethylene lauryl ether and which is easier to use and results in more lusterous hair than agents of this type.
In keeping with these objects and with others which will become apparent hereinafter, the agent. contains: (a) 0.1 to 10.0 percent by weight of a cationic copolymer of vinylimidazolium methochloride and vinylpyrrolidone as quaternized copolymer of the vinylpyrrolidone and (b) 0.1 to 5.0 percent by weight tetraoxyethylene lauryl ether.
The commercially available products Luviquat FC 370.TM., Luviquat FC 550.TM., and Luviquat FC 905.TM. produced by BASF AG, Ludwigshafen (Federal Republic of Germany) are especially suitable as the cationic copolymer of vinylimidazolium methochloride and vinylpyrrolidone. These copolymers (CTFA designation: polyquaternium-16) have the following formula (I): ##STR1## (I) wherein
x=0.30 to 0.95
y 32 0.05 to 0.70
x+y =1, molecular weight of the cationic copolymer of formula (I) is preferably between 40,000 g/mol and 1,000,000 g/mol.
Of the copolymers referred to, a copolymer of 95 mol-% vinylimidazolium methochloride and 5 mol-% vinylpyrrolidone (commercial designation Luviquat FC 905.TM., BASF) with a mean molecular weight of approximately 80,000, is particularly preferred. The tetraoxyethylene lauryl ether of formula (II)
CH.sub.3 (CH.sub.2).sub.10 CH.sub.2 (OCH.sub.2 CH.sub.2).sub.4 OH (II) is a lauryl alcohol oxyethylated with 4 mol ethylene oxide.
The tetraoxyethyl
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Gross Paul
Henze Hildegard
Lang Gunther
Stahle Liane
Wendel Harald
Benston, Jr. William E.
Page Thurman
Striker Michael J.
Wella Aktiengesellschaft
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