Kao Corporation

Kiyoshi Aimono

Tadaaki Fujita

Tomihiro Kurosaki

Toshio Nozaki

Akira Yamamuro

Akio Kimura

Junya Wakatsuki

Kunizo Hashiba

Koichi Ohori

Shinji Tsuyutani

Kengo Shibata

Makoto Amau

Process for the preparation of phosphoric monoester

A process is disclosed for the production of an alkyl glycoside excellent in hue, which comprises (1) reacting a sugar with alcohol to obtain an alkyl glycoside reaction product containing an unreacted higher alcohol, (2) reacting the resulting product with a metal/hydrogen complex represented by formula (I)

Process for production of alkyl glycoside excellent in hue

A process for the production of an alkyl glycoside or an aqueous solution thereof is disclosed, comprising the steps of (1) reacting a sugar with alcohol to obtain an alkyl glycoside reaction product containing unreacted alcohol, (2) establishing a moving liquid film of the alkyl glycoside reaction product and (3) contacting the moving liquid film with steam or an inert gas at a temperature of from 50.degree. to 200.degree. C. The alkyl glycoside or aqueous solution thus obtained contains little unreacted alcohol and is excellent in hue and odor.

Process for the production of alkyl glycoside or aqueous solution thereof

A phosphoric ester salt of high purity is produced by converting a phosphoric ester in a mixture containing the phosphoric ester and one or more nonionic compounds into a phosphoric ester salt by using a basic compound, and extracting nonionic compounds from the above mixture by using a mixed solvent of aliphatic hydrocarbons or cycloaliphatic hydrocarbons, a lower alcohol and water. The above method is applicable to a non-crystalline phosphoric ester from which nonionic compounds cannot be removed by recystallization. The above obtained phosphoric ester salt of high purity can be used as it is or after condensation.

Process for producing phosphoric ester salt of high purity

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Wakayama, Japan

Kiyoshi Aimono