Process for producing oligoesters
US4560788A · kind A · utility
3Cited by
1References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 1983 |
| Grant date | Dec 24, 1985 |
| Priority date | — |
| Expiry date | Aug 8, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C67/26
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for producing an oligoester which comprises: PA0 (a) the step of reacting isophthalic acid and propylene oxide in a reaction medium in the presence of a specific catalyst comprising a tetraalkyl ammonium compound to prepare an oligoester, and PA0 (b) the step of removing volatile components from the resulting oligoester by heating the oligoester at a temperature of 180.degree.-280.degree. C. is disclosed. The oligoester is used as an intermediate for preparing unsaturated polyesters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.