Mitsubishi Gas Chemical Company, Inc.

Ken Sugito

Kazuhiro Nakamura

Haruo Inoue

Mitsuharu Kitamura

Hiroki Saito

Shinichi Nagao

Shiori Shinagawa

Makoto Sumitani

A method for producing tricyclo[5.2.1.0]decane-2-carboxylate according to the present invention is a method for producing tricyclo[5.2.1.0]decane-2-carboxylate, containing reacting tricyclo[5.2.1.0]deca-3-ene in a dilute solution containing the tricyclo[5.2.1.0]deca-3-ene with carbon monoxide in the presence of an acid catalyst, followed by reaction with an alcohol, wherein the dilute solution contains 100 parts by mass or more of a tricyclo[5.2.1.0]decane isomer mixture based on 100 parts by mass of the tricyclo[5.2.1.0]deca-3-ene, the tricyclo[5.2.1.0]decane isomer mixture contains endo-tricyclo[5.2.1.0]decane (Endo form of TCD) and exo-tricyclo[5.2.1.0]decane (Exo form of TCD), and a constituent ratio thereof (Endo form of TCD/Exo form of TCD) is greater than 1.0.

Method for producing tricyclo[5.2.1.02,6]decane-2-carboxylate

The oxygen detecting agent composition according to the present invention includes a redox dye, a reducing agent and a basic substance, wherein the redox dye is an iron blue pigment and the reducing agent is lactose.

Oxygen detecting agent composition, and molded article, sheet, packaging material for oxygen scavenger, and oxygen scavenger using the same

An oxygen detecting multilayer body allows easy detection of a color change of an oxygen detecting layer, and prevention of crazing of an oxygen detecting layer. The oxygen detecting multilayer body includes a transparent resin layer, a heat seal layer, and an oxygen detecting layer containing an oxygen detecting component, placed occupying a part of a space between the transparent resin layer and the heat seal layer, wherein a spacer is placed to occupy at least a part of a space between the transparent resin layer and the heat seal layer, where the oxygen detecting layer is not provided, so as to make up a missing thickness of the oxygen detecting multilayer body, wherein the thickness of the oxygen detecting layer is from 0.5 to 40 &#x3bc;m, and the ratio of the thickness of the oxygen detecting layer to the thickness of the spacer is from 15:1 to 1:10.

Oxygen detecting multilayer body, as well as oxygen detecting packaging material and oxygen absorber package using the same

Provided is an oxygen detecting agent composition including a redox dye and a reducing agent, the redox dye being an inorganic substance.

The oxygen detecting composition of the present invention includes a layered silicate, a cationic surfactant, an organic colorant, a reducing agent, and optionally a basic substance. The oxygen detecting composition is suitable for indicating the presence or absence of oxygen or the degree of oxygen concentration by its reversible color change because of its high light resistance, high heat resistance, transparency and translucency.

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Kurashiki, Japan

Ken Sugito