Oxygen-scavenging polyester compositions useful in packaging
US7521523B2 · kind B2 · utility
6Cited by
56References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2006 |
| Grant date | Apr 21, 2009 |
| Priority date | — |
| Expiry date | May 9, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/826
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Oxygen-scavenging polyester compositions are disclosed that comprise one or more polyesters having incorporated therein residues of 3-hexenedioic acid and terephthalic acid. The compositions may further comprise residues of one or more aliphatic dicarboxylic acids such as adipic acid. One or more of the polyesters of the compositions may comprise significant amounts of repeating units of polyethylene terephthalate as homopolymers or copolymers, making them suitable for us in packaging compositions having oxygen-scavenging properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.