Ajinomoto Co., Ltd.

Masahiro Ino

Gaku Hattori

Takanori Sugimoto

Hiroji Ishii

Naoaki Ikeda

Masayuki Kuramoto

Tatsuya Hattori

The present invention provides a method of producing an aqueous solution containing an N&#x2014;Cacyl acidic amino acid and/or a salt thereof and having pH 8.4-9.5, including the first step for reacting an acidic amino acid and/or a salt thereof with a Cfatty acid chloride in a water solvent at pH 10-13 to form an N&#x2014;Cacyl acidic amino acid salt, and the second step for adjusting the pH of the aqueous solution after the first step to 8.4-9.5.

Aqueous solution containing n-long-chain acyl acidic amino acid and/or salt thereof, and method for producing same

Aqueous solution containing N-long-chain acyl acidic amino acid and/or salt thereof, and method for producing same

The present invention provides a novel gellant capable of favorably gelatinizing an oily base. The present invention relates to a gellant for an oily base, which contains the peptide compound represented by the formula (1), and further relates to a gelatinous composition containing (A) the gellant for an oily base, and (B) an oily base. Formula (1): wherein the symbols are as described in the DESCRIPTION.

Gellant

Provided is a gelling agent containing N-acyl acidic amino acid dialkylamide having a DL form ratio (D form/L form (weight/weight)) of 5/95-20/80 or 80/20-95/5, and using the gelling agent, a gel composition, particularly a rod-like gel composition, superior in transparency and strength, and superior in compatibility and spreadability when applied to the skin, hair and the like is provided.

Gelling agent

A cleansing agent composition containing wherein Rand Rare each independently a hydrogen atom, a methyl group, a hydroxymethyl group, or a hydroxyethyl group, shows high detergency and low irritativeness, can suppress rough skin after washing and drying, and can be preferably used for cosmetic agents.

Cleansing agent composition comprising sulfonate-type surfactant and/or sulfate-type anionic surfactant and heterocyclic compound

The problem of the present invention is provision of a cleansing composition providing good amount and good quality of lather. Using a particular alkenoic acid or a salt thereof, the above-mentioned problem can be solved. In addition, the cleansing composition provided by the present invention is stable in various formulations and also useful for rough skin and damaged hair.

Cleaning agent composition

To provide a novel substance having an excellent water-dispersibility capable of forming an emulsion which spreads rapidly onto the skin, does not undergo aggregation or segregation due to a salt, and is excellent in a low temperature stability. The aforementioned problems were found to be solved by means of a certain polysaccharide and the invention was established.

N-acylamino acid derivatives of cellulose or starch based polysaccharides and emulsified products containing the same

Combining a particular alkenoic acid or salt thereof with a sugar type surfactant and/or sulfate type surfactant affords a liquid cleansing composition which provides a good amount of lather and a superior moist feeling after washing.

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Kawasaki, Japan

Masahiro Ino