Mitsubishi Gas Chemical Company, Inc.

Kiyonori Michiba

Akihiro Masuda

Yoshiki Itou

Takashi Kubo

Tatsuo Iwai

Kenichi Niimi

Satoshi Okada

Takashi Kashiba

Shinpei Iwamoto

Jungo Taguchi

Kazuyuki Minato

Takayoshi Itoh

An oxygen-absorbing container includes a container body having a multilayer structure constituted by an innermost layer, an outermost layer and an intermediate layer therebetween, the container body having an opening part on an upper part thereof; and a sealing member bonded to an upper end surface of the opening part of the container body to seal an opening of the opening part. The innermost layer and the intermediate layer are bent outward at an upper end of the opening part and form a flat part and a surface of the flat part forms the upper end surface of the opening part. When the sealing member is unsealed, part of the innermost layer on the upper end surface of the opening part is configured to be peeled off so as to leave an unsealed mark.

Container

There is provided a process for producing a resin composition in a safe and cost-effective manner, the resin composition being a dispersion of active particles reactive with oxygen in a thermoplastic resin. The process is one for producing a resin composition containing at least a thermoplastic resin and active particles that have been dispersed in the thermoplastic resin and are reactive with oxygen in an atmosphere, the process comprising the steps of: protecting the active particles with a dispersion medium to prevent oxygen in the atmosphere from contacting with the active particles; removing the dispersion medium while melt-kneading the thermoplastic resin and the active particles protected with the dispersion medium to replace the dispersion medium with the thermoplastic resin; and cooling and solidifying the thermoplastic resin with the active particles dispersed therein.

Process for producing resin composition containing active particles

Provided is a resin composition which is excellent in an oxygen-absorbing performance, a resin strength and a resin processability. The oxygen-absorbing resin composition is characterized by containing a polyolefin resin, a transition metal catalyst and a polyamide resin obtained by polycondensation of aromatic diamine and dicarboxylic acid, wherein an end amino group concentration of the above polyamide resin is 30 &#x3bc;eq/g or less, and a total content of the transition metal catalyst and the polyamide resin is 15 to 60% by weight based on a whole amount of the oxygen-absorbing resin composition.

Oxygen-absorbing resin composition

There are provided an oxygen absorbing resin composition, an oxygen absorbing multilayered body, and an oxygen absorbing hollow container that can absorb oxygen in an atmosphere even under a low-humidity atmosphere. The oxygen absorbing resin composition includes: (I) an oxygen absorbing agent consisting of a metal (a metal of (I)) obtained by subjecting an alloy comprising (A) at least one transition metal selected from the group consisting of manganese, iron, platinum, and copper group metals and (B) at least one metal selected from the group consisting of aluminum, zinc, tin, lead, magnesium, and silicon, to treatment with an acidic or alkaline aqueous solution to elute and remove at least a part of the component (B); and (II) a thermoplastic resin.

Oxygen absorbing resin composition, oxygen absorbing multilayered body, and oxygen absorbing hollow container

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Tokyo, Japan

Kiyonori Michiba