Oxygen-absorbing resin composition

Patent metadata

Field	Value
Publication number	US-9764308-B2
Application number	US-201213978048-A
Country	US
Kind code	B2
Filing date	Jan 12, 2012
Priority date	Jan 27, 2011
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

To provide an oxygen-absorbing polyester resin composition which exhibits excellent oxygen-absorbing capability even in the absence of transition metal catalyst without affected by the glass transition temperature of a polyester resin that is contained as a base resin.
The oxygen-absorbing polyester resin composition including a base resin (A) which is a polyester resin, an oxygen-absorbing component (B) which is a compound having an unsaturated alicyclic structure, and an oxidation promotion component (C) for promoting the oxidation of the oxygen-absorbing component (B), said oxidation promotion component (C) being a compound having a benzyl hydrogen.

First claim

The invention claimed is:

1. A packaging container having, formed in the wall thereof, at least one layer that comprises an oxygen-absorbing resin composition including
a base resin (A) which is a polyester resin,
an oxygen-absorbing component (B) which is a compound having an unsaturated alicyclic structure, and
an oxidation promotion component (C) for promoting the oxidation of said oxygen-absorbing component (B), said oxidation promotion component (C) being a styrenic polymer,
wherein the oxygen-absorbing component (B) is an imide-derivative having a molecular weight of not more than 2000 obtained by reacting an aliphatic amine with an acid anhydride represented by the following formula (1),

wherein the ring X is an aliphatic ring having an unsaturated bond, and Y is an alkyl group;
wherein the aliphatic amine has no aromatic ring;
wherein said styrenic polymer is used in such an amount that the styrene units contained in the styrenic polymer are present in an amount of from 0.1 to 30 parts by weight per 100 parts by weight of the oxygen-absorbing component (B).

2. The packaging container according to claim 1 , wherein the layer that comprises said oxygen-absorbing resin composition is formed at a position where it comes in contact with the content in the container.

3. The packaging container according to claim 2 , wherein the container wall consists of only a single layer of said oxygen-absorbing resin composition.

Assignees

• Yamada Toshiki
• Hirayama Yukiko
• Sawa Yoshiki
• Toyo Seikan Group Holdings Ltd

Inventors

• Yamada Toshiki
• Hirayama Yukiko
• Sawa Yoshiki

Classifications

• B01J20/3014

  Kneading · CPC title

• B01J20/261 Primary

  obtained by reactions only involving carbon to carbon unsaturated bonds (macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds per se C08F) · CPC title

• B01J20/22

  comprising organic material · CPC title

• B01J2220/44

  Materials comprising a mixture of organic materials (materials coated or impregnated on a carrier B01J20/32) · CPC title

• C08L77/06

  Polyamides derived from polyamines and polycarboxylic acids (C08L77/10 takes precedence) · CPC title