Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Liquid composition
Patent
1996-04-10
1997-12-23
Lieberman, Paul
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Liquid composition
510126, 510501, 510502, 510235, 510237, 510119, 510123, 510135, 510503, 550124, 550130, 550137, 514852, C11D 166, C11D 190, C11D 192
Patent
active
057007721
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a detergent composition, and particularly to a detergent composition which has low irritativeness to the skin and the like and excellent foamability, and produces creamy foams.
BACKGROUND ART
Anionic surfactants such as alkylsulfates, polyoxyethylene alkylsulfates, alkylbenzenesulfonates and .alpha.-olefinsulfonates, which have the merit of high foamability, have heretofore been used widely as surfactants for detergents. However, all these surfactants involve a problem that they are more or less irritative to the skin and roughen the skin during repeated use.
Amphoteric surfactants such as amidoamino acid type surfactants, carbobetaine, sulfobetaine and imidazolinium betaine, which have the merit of low irritativeness to the skin and ophthalmic mucosa, have also been used widely as surfactants for detergents. However, these amphoteric surfactants have involved some drawbacks including the fact that cleansability and foamability, which are essential performance characteristics required of detergent compositions, are poor. It has been thus difficult to use them as main surfactants.
Therefore, it has been attempted to unite low irritativeness and high foamability by using conventional anionic surfactant in combination with an amphoteric surfactant. However, it is apparent that such combined use cannot basically improve the irritativeness.
Alkylsaccharide type surfactants, sulfosuccinic acid type surfactants, ether carboxylic acid type surfactants, amide-ether carboxylic acid type surfactants, etc. have also been known as low-irritative surfactants. However, the alkylsaccharide type surfactants have high foamability, but give a strong creaky feel upon washing and rinsing. Therefore, it is technically difficult to incorporate them in a large amount in shampoos and the like though a method of using them in combination with a conditioning agent such as a cationic polymer (Japanese Patent Application Laid-Open No. 42013/1990), and the like have been proposed. The sulfosuccinic acid type surfactants per se are poor in foamability, and a method of using them in combination with other surfactants (Japanese Patent Application Laid-Open No. 218797/1990), and the like have been proposed. They are often practically used in combination with other surfactants. Commercially-available ether carboxylic acid type surfactants and amide-ether carboxylic acid type surfactants are also poor in foamability and hence used only as co-surfactants in detergents of which high foamability is required.
Amide-ether carboxylic acid type surfactants are commercially-available from Chem-Y GmbH in Germany under the trade name of "Akypo". These products contain an amide-ether carboxylic acid and an amide-ether, which is a raw material therefor, and besides, polyoxyethylene glyceryl ether, polyoxyethylene glyceryl ether carboxylic acid, inorganic salts and the like, which are impurities derived from raw materials.
Techniques as to the application of the amide-ether carboxylic acid type surfactants to detergents, which have been known to date, include a cosmetic composition comprising an amide-ether carboxylic acid (European Patent No. 102118), a detergent composition comprising an amide-ether carboxylic acid type surfactant and a polyoxyethylene alkylsulfate in combination (European Patent No. 215504), an amide-ether carboxylic acid produced by using, as a starting material, oil and fat, and a detergent containing the same (Japanese Patent Application Laid-Open No. 291996/1988, European Patent No. 219893), and a detergent comprising, soap as a main component, and an amide-ether carboxylic acid, an alkyl ether carboxylic acid or salt thereof (U.S. Pat. No. 4,865,757).
However, none of these detergents have been yet satisfactory from the viewpoint of foamability. There have thus been demand for development of a detergent which has low irritativeness to the skin and the like and high foamability.
In view of the foregoing circumstances, the present inventors have carried out an investigation as to
REFERENCES:
patent: 4783282 (1988-11-01), Smid
patent: 4818440 (1989-04-01), Schafer et al.
patent: 4865757 (1989-09-01), Singh-Verma et al.
patent: 5478490 (1995-12-01), Russo et al.
Azuma Toshikazu
Imamura Takashi
Isobe Kazuo
Nishikawa Hideyo
Boyer Charles
Kao Corporation
Lieberman Paul
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