Process of manufacturing diaryl esters of dicarboxylic acids
US4482732A · kind A · utility
3Cited by
5References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 24, 1982 |
| Grant date | Nov 13, 1984 |
| Priority date | — |
| Expiry date | Sep 24, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S203/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An improved process for preparing diaryl esters of dicarboxylic acids is disclosed, in which the esterification reaction is optimized by removing water and other by-products of the reaction according to a predetermined pattern. The removal of water and other by-products of the esterification reaction is most easily carried out by a distillation means, and the rate of removal is controlled by varying the reflux ratio in the distillation means during the course of the esterification reaction. The diaryl esters so prepared are useful in making linear polyesters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.