Detergent composition

Compositions – Compositions containing a single chemical reactant or plural... – Organic reactant

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252541, 252544, 252546, 252549, 252550, 252DIG1, 252DIG6, 252DIG12, 424 7019, 424 7022, 424 7027, 424401, C11D 900, C11D 118, C11D 132, A61K 706

Patent

active

055297129

DESCRIPTION:

BRIEF SUMMARY
TECHNICAL FIELD

This invention relates to a detergent composition which comprises an N-acyl glycine salt, an N-acyl alanine salt and/or an N-acyl .beta.-alanine salt, together with a higher fatty acid salt, and to another detergent composition whose use feeling is improved by incorporating further a higher alcohol and/or a polyhydric alcohol.


BACKGROUND ART

N-Acyl amino acid salts are known as surface active agents generally having high safety, and, particularly, N-acyl glutamic acid salts, N-acyl sarcosine salts, N-acyl .beta.-alanine salts, N-acyl methyl taurine salts and the like are broadly used in detergents. Other N-acyl amino acid salts have also been studied since considerably old times, and N-acyl amino acids were actually synthesized from and examined on natural amino acids and synthetically obtainable amino acids. Especially, there are a number of reports on the results of studies on N-acyl derivatives of natural amino acids.
Recently, it was reported that scum formed by the reaction of an N-acyl glycine salt, an N-acyl .beta.-alanine salt or the like with calcium contained in city water was found to have an excellent touch (Japanese Patent Application Laid-Open (Kokai) No. Hei 4-221607). However, the N-acyl amino acid salts disclosed in this report and other natural type N-acyl amino acid salts were not sufficient in their bubble-related performances in terms of bubble retention, creaminess, lathering power and sliminess.
The object of the present invention is to provide an excellent detergent composition comprising an N-acyl amino acid salt, which is highly safe and shows quick, effective and creamy lathering and reduced slimy touch to the skin.


DISCLOSURE OF THE INVENTION

With the aim of achieving the aforementioned object, the inventors of the present invention have conducted intensive studies and found as the result that an excellent detergent composition having the aforementioned properties can be provided by jointly using a salt of a specified N-acyl amino acid and a salt of a specified higher fatty acid, or by blending further them with a specified higher alcohol and/or polyhydric alcohol, and finally accomplished the present invention on the basis of such findings.
Accordingly, the present invention relates to a detergent composition which comprises (A) an N-acyl amino acid salt of an amino acid selected from glycine, alanine and .beta.-alanine where the acyl group is a fatty acid residue having 8 to 20 carbon atoms and (B) a higher fatty acid salt having 8 to 20 carbon atoms at a Component (A)/Component (B) weight ratio of 99.5/0.5 to 90/10, and to another detergent composition derived from the above composition, which comprises further a higher alcohol and/or polyhydric alcohol.
The present invention will be described in detail as follows.
With regard to N-acyl amino acid salts as Component (A) of the detergent composition of the present invention, the N-acyl amino acid moiety is composed of an amino acid selected from glycine, alanine and .beta.-alanine and an acyl group which is a saturated or unsaturated fatty acid residue having 8 to 20 carbon atoms. Examples of such moiety include lauroyl glycine, cocoyl glycine, myristoyl glycine, palmitoyl glycine, stearoyl glycine, oleoyl glycine, lauroyl .beta.-alanine, cocoyl .beta.-alanine, myristoyl .beta.-alanine, palmitoyl .beta.-alanine, stearoyl .beta.-alanine, oleoyl .beta.-alanine, lauroyl alanine, cocoyl alanine, myristoyl alanine, palmitoyl alanine, stearoyl alanine and the like. These N-acyl amino acids may be of either optically active form or racemic form. On the other hand, examples of the base moiety include alkali metals such as sodium, potassium and the like, organic amines such as triethanolamine, diethanolamine, monoethanolamine and the like alkanol amines and basic amino acids such as lysine, ornithine, arginine and the like. These base moieties may be used as a combination of two or more, because such a combination may further improve lathering and bubble retention.
With regard to higher fatty acid salts as Compon

REFERENCES:
patent: 4765984 (1988-08-01), Vellekoop et al.
patent: 5114717 (1992-05-01), Kuznitz et al.
patent: 5128123 (1992-07-01), Brewster et al.
patent: 5186855 (1993-02-01), Crudden

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