Polymeric material for making a packaging article having oxygen-barrier properties and low light transmission properties
US8865278B2 · kind B2 · utility
2Cited by
4References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2009 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Nov 21, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/139
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The polymeric material having oxygen barrier properties and low light transmission characteristics, in particular within the UV and visible light wavelengths and comprises (A) a polyester, (B) mineral particles, (C) a polyamide, and (D) at least one transition metal catalyst. Preferably the amount of mineral particles is not more than 26 wt % of the total weight of the material, and is not less than 20 wt % of the total weight of the material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.