Copolyesters and processes for preparing copolyesters suitable for use in food contact applications
US12378352B2 · kind B2 · utility
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29Claims
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Key dates
| Filing date | Apr 20, 2020 |
| Grant date | Aug 5, 2025 |
| Priority date | — |
| Expiry date | Jun 7, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/78
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for preparing a copolyester comprising repeating units derived from (i) at least one aliphatic glycol, (ii) at least one aromatic dicarboxylic acid, and (iii) at least one aliphatic dicarboxylic acid, wherein the aliphatic dicarboxylic acid constitutes a proportion of the acid fraction of the copolyester.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.