Mitsubishi Gas Chemical Company, Inc.

Shigeru Murabayashi

Yoshiaki Inoue

Isamu Yoshino

Takeshi Nagasaka

Yoshio Yoshikawa

Akira Naito

Yoshihiko Harima

Kazuo Fujinami

Hideaki Takahashi

Hideaki Watanabe

Takamasa Kawakami

Tatsuo Iwai

Satoru Makinose

Nobuhisa Ariyoshi

Provided is a method for drying resin-used electronic parts which comprises enclosing resin-used electronic parts together with both an oxygen absorbent requiring no moisture for absorption of oxygen and a drying agent in a container having a gas barrier property and then sealing the container and removing oxygen and, preferably, then heating the sealed container. Thereby, no quality deterioration due to oxidation and degradation of a metal surface occurs in a drying step of resin-used electronic parts.

Method for drying resin-used electronic parts

Disclosed are an inhibitor parcel comprising (a) a composition comprising an unsaturated fatty acid compound as its main ingredient and (b) a permeable diffusing-parcelling material prepared by laminating and bonding an oxygen-permeable resin layer onto one side of a base sheet made of a fibrous material and an adhesive or onto one adhesive-coating side of a base sheet made of a fibrous material, then laminating and bonding thereonto an oxygen-permeable resin layer and laminating and bonding a porous film of low softening point resin or a low softening point unwoven fabric onto the other side of the base sheet, said permeable diffusing-parcelling material (b) having an oxygen permeability of 10.sup.4 to 10.sup.6 ml/m.sup.2.Atm.Day and a (water vapor permeability/oxygen permeability) ratio of 0.02 H.sub.2 O mg.Atm/O.sub.2 ml! or above at 25.degree. C. at a relative humidity of 50% and said composition (a) being parcelled by said permeable diffusing-parcelling material (b) and an inhibitor parcel for use in electronic devices and electronic parts which comprises said inhibitor parcel and a method for preserving electronic devices and electronic parts using said inhibitor parcel.

Inhibitor parcel and method for preserving electronic devices or

Disclosed are an inhibitor parcel including (a) a composition including an unsaturated fatty acid compound as its main ingredient and (b) a permeable diffusing-parcelling material prepared by laminating and bonding an oxygen-permeable resin layer onto one side of a base sheet made of a fibrous material and an adhesive or onto one adhesive-coating side of a base sheet made of a fibrous material, then laminating and bonding thereonto an oxygen-permeable resin layer and laminating and bonding a porous film of low softening point resin or a low softening point nonwoven fabric onto the other side of the base sheet, the permeable diffusing-parcelling material (b) having an oxygen permeability of 10.sup.4 to 10.sup.6 ml/m.sup.2. Atm. Day and a (water vapor permeability/oxygen permeability) ratio of 0.02 [H.sub.2 O mg.Atm/O.sub.2 ml] or above at 25.degree. C. at a relative humidity of 50% and the composition (a) being parcelled by the permeable diffusing-parcelling material (b) and an inhibitor parcel for use in electronic devices and electronic parts which includes the inhibitor parcel and a method for preserving electronic devices and electronic parts using the inhibitor parcel.

A method of preserving an article which includes enclosing the article and an oxygen absorbent parcel in a container having gas-barrier properties and sealing the container. The parcel is formed by packing an oxygen absorbent composition with a gas permeable packing material, the oxygen absorbent composition containing an linear hydrocarbon polymer having one or more unsaturated groups or a mixture of the polymer with an unsaturated fatty acid compound, an oxidation promoter, a basic substance and an adsorption substance.

Method of preserving article with an oxygen absorbent composition

An oxygen absorbent composition containing a linear hydrocarbon polymer having one or more unsaturated groups or a mixture of a linear hydrocarbon polymer having one or more unsaturated groups with an unsaturated fatty acid compound and an oxidation promoter as essential components and optionally containing a basic substance and/or an adsorption substance; an oxygen absorbent parcel formed by packing the oxygen absorbent composition with a gas-permeable packing material; and a method of preserving an article by means of same.

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Tokyo, Japan

Shigeru Murabayashi