Process for the production of carbonate esters
US5183918A · kind A · utility
1Cited by
8References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1989 |
| Grant date | Feb 2, 1993 |
| Priority date | — |
| Expiry date | Aug 25, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C303/32
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a process of producing carbonate esters wherein an alkyl chloroformate is reacted with a phenolsulfonate in an alkaline medium and discloses the improvement whereby dialkylcarbonate formation is reduced by adding an acidifying agent to the reaction mixture after the reaction and before precipitation of the alkylsulfophenyl carbonate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.