Process for making polyesters
US7081511B2 · kind B2 · utility
12Cited by
18References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2004 |
| Grant date | Jul 25, 2006 |
| Priority date | — |
| Expiry date | Aug 7, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a process for making a polyester where a dianhydride is reacted with a diol. The resulting polyester can be further reacted with a compound selected from aromatic oxides, aliphatic oxides, alkylene carbonates, alcohols, and mixtures thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.