Process for production of a polyester product from alkylene oxide and carboxylic acid
US7332548B2 · kind B2 · utility
1Cited by
174References
47Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2004 |
| Grant date | Feb 19, 2008 |
| Priority date | — |
| Expiry date | Feb 15, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/87
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process to produce polyester product from alkylene oxide and carboxylic acid. More specifically this process relates to a process to produce polyethylene terephthalate where terephthalic acid and ethylene oxide are reacted to form a partially esterified terephthalic acid product and then the partially esterified product is further reacted with ethylene glycol to produce polyethylene terephthalate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.