Polyester and method for preparing such a polyester
US9908968B2 · kind B2 · utility
1Cited by
4References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2015 |
| Grant date | Mar 6, 2018 |
| Priority date | — |
| Expiry date | Mar 11, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/866
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyester, including ethylene 2,5-furandicarboxylateunits, also includes diethylene glycol residues, the content of which is less than 0.045, in moles per mole of 2,5-furandicarboxylate moieties. The polyester composition can be prepared with a method where a starting mixture is subjected to esterification of 2,5-furandicarboxylic acid or transesterification of an ester thereof with ethylene glycol in the presence of a basic compound and/or an ammonium compound capable of suppressing the formation of diethylene glycol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.