Polyester phenylenedi (oxyacetic acid) copolyester blends having improved gas barrier properties
US6254950A · kind A · utility
7Cited by
8References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1999 |
| Grant date | Jul 3, 2001 |
| Priority date | — |
| Expiry date | Jun 14, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1397
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to polyester compositions that possess improved gas barrier properties. The novel copolyester blends comprise repeat units of phenylenedi(oxyacetic acid). Such copolyesters with improved gas barrier properties are useful in packaging applications where low gas permeability are required for protection or preservation of the contents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.