Oxygen scavenging polyester blends having improved aesthetic characteristics
US10526488B2 · kind B2 · utility
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3References
20Claims
0Family size
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Key dates
| Filing date | Jun 10, 2016 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Nov 26, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2203/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed herein is a preform having a preform wall. The preform wall preferably comprises a composition comprising at least one polyester component, a transition metal catalyst, and a vegetable oil. The vegetable oil may comprise at least one molecule having a double allylic structure. The at least one polyester component may comprise at least one acid unit and at least one diol unit. The concentration of double allylic structures of the vegetable oil in the composition may be greater than 5.0 meq/kg of all of the polyester components. The preform has improved aesthetic characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.