Dainippon Ink and Chemicals, Incorporated

Kawamura Institute of Chemical Research

Sharp Corporation

Dainippon Ink Institute of Chemical Research

Kazuo Kimura

Yoshi Arai

Haruyoshi Takatsu

Hisato Sato

Yutaka Fujita

Masayuki Tazume

Takasi Yamaki

Katsuhiko Morita

Tesshu Miyahara

Fumiaki Funada

Shoichi Kinoshita

Masanao Ohzeki

Tomio Wada

Hisashi Yamamoto

A process for producing a magnetic metal powder having improved oxidation resistance and magnetic properties, which comprises wetting a magnetic metal powder in an atmosphere of a non-oxidizing gas with a solution of a boron trialkoxide in a solvent being inert to the magnetic metal powder and capable of dissolving the boron trialkoxide; and thereafter evaporating off the solvent.

Process for producing magnetic metal powder

A nematic liquid crystal composition comprising (I) 4-n-valeryloxy-4'-cyanobiphenyl, (II) 4-n-caproyloxy-4'-cyanobiphenyl and (III) 4'-cyanophenyl-4-n-heptylbenzoate, and either (IV) 4'-cyanophenyl-4-n-butylbenzoate or (V) 4'-cyanophenyl-4-n-nonylbenzoate, said composition having a crystal-nematic transition temperature of -40.degree. to -20.degree. C and a nematic-isotropic transition temperature of 50.degree. to 65.degree. C.

Nematic liquid crystal composition

A liquid crystal composition comprising a nematic liquid crystal and a quaternary ammonium compound selected from the group consisting of the quaternary ammonium salts of carboxylic acids and the quaternary ammonium hydroxides.

Liquid crystal compositions

Growing community of inventors

Tokyo, Japan

Kazuo Kimura