Poly(ethylene terephthalate) (PET) copolymers containing both 1,4-cyclohexanedimethanol and isophthalic acid moieties
US6103857A · kind A · utility
13Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1998 |
| Grant date | Aug 15, 2000 |
| Priority date | — |
| Expiry date | Jun 11, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/181
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to PET copolymer composition that have both 1,4-cyclohexanedimethal (CHDM) and isophthalic acid moieties copolymerized. These compositions have better oxygen and carbon dioxide barrier properties than either PET homopolymer or CHDM-modified PET copolymers. These copolymer compositions are useful for packaging applications (such as carbonated soft drink bottles) requiring barrier properties to oxygen and carbon dioxide at least as good or better than PET homopolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.