Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
2002-04-15
2003-12-02
Delcotto, Gregory (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
C510S123000, C510S125000, C510S127000, C510S130000, C510S137000, C510S138000, C510S155000, C510S158000, C510S159000, C510S490000, C510S499000, C424S070110, C424S070240, C424S070270
Reexamination Certificate
active
06656892
ABSTRACT:
FIELD OF INVENTION
The present invention relates to a detergent composition. More specifically, the present invention relates to a detergent composition having excellent foaming property and is free from squeak during rinsing. More specifically, the present invention relates to a detergent composition with excellent feeling of use, for example, by imparting moistness without tackiness to skin and providing good hair control while suppressing stiffness.
RELATED ART
Good foaming property and high cleansing effect have conventionally been focused as performances of a main active agent contained in a detergent for application to a body or hair. In order to meet these requirements, sulfate ester type surfactants such as alkylsulfates and polyoxyethylene alkyl ether sulfates, higher fatty acid salts and polyoxyethylene alkyl ether acetates have been widely used.
In order to suppress rough skin feel during rinsing and imparting moist and soft finish to skin, as well as for providing hair with conditioning effects such as good combability and hair control, the aforementioned detergents are generally blended with a cationic polymer compound obtained by introducing a quarternary nitrogen into a polymer compound such as cellulose, starch, natural rubber, diallyl compounds, polyacrylic acid compounds and polyvinyl compounds. However, at least about 0.2-0.5% by weight of a cationic polymer compound is required to be added to the detergent to obtain conditioning effects as described in SOFW Journal, vol. 120, p. 854, which arises a problem that such a large amount of a cationic polymer compound will cause tackiness and stiffness after drying.
It is known that a detergent having good foaming property and providing favorable feeling of use after washing can be obtained by using an amino acid-type active agent that provides pleasant feeling of use after washing, e.g., no stiffness, in combination with the aforementioned sulfate type surfactants, higher fatty acid salts or polyoxyethylene alkyl ether acetates (PCT/EP99/06113 and the like).
Further, International Patent Publication in Japanese (KOHYO) No. 9-506351 discloses a hair shampoo obtained by mixing a sulfate type surfactant with N-lauroylsarcosine sodium and cationized cellulose. Henkel has proposed a hair shampoo added with a polyoxyethylene alkyl ether sulfate, alkylglucoside, acylated hydrolyzed collagen and cationized cellulose (“Personal-Care Formulas” in Cosmetics & Toiletries, Allured Publishing Corp., 1997). By reducing an amount of cationized cellulose to 0.1%, these shampoos achieved excellent foaming property and improvement in combability after drying, whilst they successfully eliminated a problem of stiffness. However, the shampoos were not satisfactory in alleviation of creakiness during rinsing and achievement of moist and hair control after drying.
DISCLOSURE OF THE INVENTION
Accordingly, an object of the present invention is to solve the above problems and provide a detergent composition which has good foaming property and is free from squeak or friction during rinsing. Another object of the present invention is to provide a detergent composition with excellent feeling of use by imparting moistness to skin without tackiness, and providing hair with good control while suppressing stiffness and the like.
The inventors of the present invention conducted various studies to achieve the aforementioned objects. As a result, they found that a detergent composition which had a favorable foaming property and was free from creakiness or friction during rinsing was obtainable by adding an N-long-chain acyl acidic amino acid or a salt thereof to a composition containing at least one kind of surfactant selected from a group consisting of particular classes of anionic surfactants, amphoteric surfactants and nonionic surfactants and a cationic polymer compound. They also found that the resulting detergent composition had excellent feeling of use by imparting moistness to skin without tackiness and providing hair with repose while suppressing stiffness and the like. The present invention was achieved on the basis of these findings.
The present invention thus provides a detergent composition comprising:
(A) 5 to 30% by weight of at least one kind of surfactant selected from the group consisting of anionic surfactants, amphoteric surfactants, and nonionic surfactants based on the total weight of the composition;
(B) 0.1 to 5% by weight of a substance selected from the group consisting of N-long-chain acyl acidic amino acids and salts thereof based on the total weight of the composition; and
(C) less than 0.2% by weight of a cationic polymer compound based on the total weight of the composition.
According to preferred embodiments of the aforementioned invention, provided are the aforementioned detergent composition, wherein the N-long-chain acyl acidic amino acids are N-long-chain acyl-glutamic acids; the aforementioned detergent composition, wherein the cationic polymer compound is quarternary-nitrogen containing cellulose ether; the aforementioned detergent composition, which contains a surfactant selected from the group consisting of alkylsulfates and alkyl ether sulfates as the anionic surfactant; the aforementioned detergent composition, which contains a surfactant selected from the group consisting of alkyl betaine-type surfactants and amidobetaine-type surfactants represented by the following formula (1) or (2):
(in the formula, R
1
represents a linear or branched alkyl group having 5 to 21 carbon atoms or a linear or branched alkenyl group having 5 to 21 carbon atoms, R
2
and R
3
each independently represent a hydrogen atom or a linear or branched alkyl group having 1 to 3 carbon atoms, n represents an integer of from 1 to 3, and m represents an integer of from 1 to 4) as the amphoteric surfactant; the aforementioned detergent composition, which contains an alkyl polyglucoside represented by the following formula (3):
(in the formula, m represents an integer of from 1 to 5, and n represents an integer of from 7 to 19) as the nonionic surfactant; and the aforementioned detergent composition, wherein the acyl group in the N-long-chain acyl acidic amino acid is lauroyl group or a mixed acyl group containing lauroyl group.
PREFERRED EMBODIMENTS OF THE INVENTION
As the surfactant, a surfactant selected from a group consisting of anionic surfactants, amphoteric surfactants, and nonionic surfactants can be used. Various surfactants selected from said group can be used.
Examples of the anionic surfactants include sulfate ester-type anionic surfactants, amidoether-type anionic surfactants, sulfonic acid-type anionic surfactants, carboxylic acid-type anionic surfactants, sulfosuccinic acid-type anionic surfactants, isethionic acid-type anionic surfactants, N-acylamino acid-type anionic surfactants, phosphoric acid ester-type anionic surfactants and the like. Hydrophilic portions (hydrophilic functional groups) of these anionic surfactants can be used as soluble salts such as sodium salts, potassium salts, triethanolamine salts, ammonium salts, and basic amino acid salts. Among them, sulfate ester type anionic surfactants are preferred from a viewpoint of impartment of stability to a shampoo in a dissolved state. Particularly preferred examples include alkylsulfates and polyoxyethylene alkyl ether sulfates.
Examples of the amphoteric surfactants include alkyl betaine-type amphoteric surfactants, amidobetaine-type amphoteric surfactants, sulfobetaine-type amphoteric surfactants, phosphobetaine-type amphoteric surfactants, imidazoline-type amphoteric surfactants, proprionic acid-type surfactants, amine oxide-type amphoteric surfactants and the like. Among them, alkyl betaine-type amphoteric surfactants and amidobetaine type amphoteric surfactants are most preferably used in the present invention, because, when they are used in combination with the aforementioned sulfate ester-type anionic surfactants, they suppress stimulation of said surfactants and have an effect of imparting appropriate viscosity to a composition as a liquid detergent.
Ajinomoto Co. Inc.
Delcotto Gregory
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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