Mitsubishi Gas Chemical Company, Inc.

Mikio Goto

Takanari Nawata

Yoshio Yoshikawa

Tetsuo Aoyama

Shigeru Horie

Takeo Ikarashi

Yuichi Fujii

Kozo Sano

Naoto Osaki

Yukio Kondo

An oxygen indicator adapted for printing or coating which comprises (a) at least one reducing agent, (b) a dyestuff causing color change when it is reduced with the reducing agent, (c) at least one thickening agent and (d) at least one solvent and a sheet-like oxygen indicator in which a composition comprising the above four components (a)-(d) is coated or printed on a substrate are disclosed.

Oxygen indicator adapted for printing or coating and oxygen-indicating

An oxygen indicator comprising at least one dyestuff, at least one alkaline substance and at least one reducing agent is disclosed.

Oxygen indicator

A process for preparing a methylphenol from an alkylbenzene which process comprises oxidizing by molecular oxygen an alkylbenzene having one secondary alkyl group and 1-3 methyl groups of the general formula I ##STR1## where R is a secondary alkyl group and n is an integer of 1-3, acid-decomposing the oxidation product solution in the presence of an acid catalyst, stopping the acid-decomposition reaction before its completion, hydrogenating the acid decomposition product solution in the presence of a hydrogenation catalyst in the presence or absence of a solvent, and recovering the resulting methylphenol of the general formula II ##STR2## where n is an integer of 1-3 from the hydrogenation product solution.

Process for preparing a methylphenol

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Matsudo, Japan

Mikio Goto