Oxygen-absorbing resin composition, oxygen-absorbing shaped article, packaging material and packaging container
US8293373B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2008 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Oct 10, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
[PROBLEMS] To provide: an oxygen-absorbing resin composition which needs no transition metal compound, exhibits excellent oxygen absorbability at room temperature, produces little unpleasant odor during the absorption of oxygen, and enables to produce a molded article having excellent transparency; an oxygen-absorbing molded article comprising the oxygen-absorbing resin composition; and a packaging material and a packaging container each comprising the molded article. [MEANS FOR SOLVING PROBLEMS] Disclosed is an oxygen-absorbing resin composition comprising: a resin composition (A) which comprises an oxygen-absorbing resin (A1) having a cycloene structure in the molecule and a softening agent (A2) and has a glass transition temperature of −30 to +30° C.; and a resin (B) having an oxygen permeability of 100 to 500 cc 20 μm/m2 day atm (25° C., 65% RH), wherein the resin composition (A) is dispersed in the resin (B). The softening agent (A2) is preferably liquid paraffin or polybutene. The resin (B) is preferably a (terephthalic acid)/(cyclohexanedimethanol) copolymer polyester or a polyamide resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.