Ajinomoto Co., Ltd.

Hirofumi Yokota

Tatsuya Hattori

Koichiro Sagawa

Nobuyoshi Kitamura

Naoya Yamato

Masahiro Takehara

Kenjiro Meguro

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

An inorganic composition of improved characteristics comprising at least one particulate inorganic substance whose surface is modified by an N-acylated basic amino acid.

Surface modifier for inorganic substances

Growing community of inventors

Kawasaki, Japan

Hirofumi Yokota