Ajinomoto Co., Ltd.

Naoya Yamato

Tatsuya Hattori

Nobuyoshi Kitamura

Ryosuke Yumioka

Naoaki Ikeda

Keigo Sano

Toshihiko Hatajima

Yasunori Atarashi

Hideki Yoshihara

Shuvendu Biswas

Hirofumi Yokota

An unground N-long chain acyl lysine crystal production method that includes: preparing a solution having at least one type of N-long chain acyl lysine dissolved in an acidic or basic solvent including water and/or one type selected from water-soluble organic solvents; dipping the solution into an acidic solution having a pH of at least 0.2 and less than 2.0, at a temperature of no more than 20° C.; and crystallizing N-long chain acyl lysine crystals.

N-long chain acyl lysine crystal production method and composition containing said crystals

Provided is a composition containing the following components (A), (B) and (C) and suppressing formation of scum during cleansing, wherein a weight ratio of (A)/(B) is 0.2-5 and a weight ratio of ((A)+(B))/(C) is 0.01-10:

Composition

A cosmetic composition for skin and/or hair, which comprises at least one kind of substance selected from the group consisting of an N,N-di-acylarginine, for example, a compound represented by the following general formula (I): wherein Rand Reach independently represents a straight or branched-chain alkyl group having 1 to 21 carbon atoms or a straight or branched-chain alkenyl group having 2 to 21 carbon atoms. The cosmetic composition imparts much moistness and superior conditioning effects such as body or elasticity to hair, and to skin, said composition does not impart tackiness and blocked feeling, whilst imparts superior feeling of use such as moistness.

Cosmetic composition

A compound represented by the following general formula (I), wherein Rand Rrepresent a hydrocarbon group having 1 to 26 carbon atoms, preferably a linear or branched alkyl group, Rrepresents a hydrocarbon group having 7 to 10 carbon atoms, preferably a linear or branched alkyl group, n represents 1 or 2 provided that the acidic amino acid residue in the molecule is L-aspartic acid residue when n is 1 and said acidic amino acid residue is L-glutamic acid residue when n is 2, and a gelling agent for an oil comprising said compound 

Gelling agent for oil

A gelling agent for an oil, which contains at least one compound (A) and at least one compound (B), and a gel composition containing the gelling agent and an oil: wherein Ris a straight chain or branched chain, saturated or unsaturated hydrocarbon group having 7 to 17 carbon atoms, Ris a straight chain or branched chain, saturated or unsaturated hydrocarbon group having 1 to 26 carbon atoms, Rand Rare each independently a straight chain or branched chain, saturated or unsaturated hydrocarbon group having 1 to 26 carbon atoms, and Ris a straight chain or branched chain, saturated or unsaturated hydrocarbon group having 7 to 17 carbon atoms.

Herein is disclosed a cosmetic composition comprising, as active ingredients, one or more members selected from the group consisting of mono-N-acylarginines and cosmetic powders whose surfaces have been treated with a mono-N-acylarginine (Ingredient A) and one or more members selected from the group consisting of water-soluble polymers and alcohol-soluble polymers (Ingredient B), which cosmetic composition is excellent in conditioning effects such as moist feeling and voluminous feeling in the case of hair cosmetics and excellent in feelings upon use such as smoothening property and moist feeling without sticky feeling and occlusive feeling in the case of skin cosmetics.

A method for preparing a highly purified N-long chain acyl neutral amino acid for use of a detergent and the like in a simple and convenient manner and in a high yield by reacting a neutral amino acid such as glycine, &ggr;-aminobutyric acid, and alanine, with a saturated or unsaturated fatty acid halide having 8 to 22 carbon atoms, wherein the reaction is performed in a mixture of water and one or more kinds of hydrophilic organic solvents selected from the group consisting of acetone, acetonitrile, a secondary alcohol having 3 or 4 carbon atoms, and a tertiary alcohol having 4 carbon atoms such as isopropanol, sec-butanol, and tert-butanol in the presence of a base.

Method for preparing N-long chain acyl neutral amino acid

The object of the present invention is to provide a cutting oil composition excellent in solubility, lubricity, cutting properties, antirust ability, safety, and washing ability and reduced in foaming, and for that purpose, an N-acylamino acid having a long chain acyl group and/or a salt thereof, or an N-alkylamino acid having a long chain alkyl group and/or a salt thereof is used concurrently with an alkylalkylene oxide and/or an acylalkylene oxide.

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Kawasaki, Japan

Naoya Yamato