Captive carbonyl halide process for production of diaryl carbonates
US5380909A · kind A · utility
2Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 28, 1992 |
| Grant date | Jan 10, 1995 |
| Priority date | — |
| Expiry date | May 28, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C68/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the production of a diaryl carbonate comprising: PA1 contacting an aromatic hydroxy compound with a carbonyl halide in the presence of a catalyst in a reactor system under conditions sufficient for the formation of a diaryl carbonate and a hydrogen halide; PA1 recovering the aromatic carbonate; and PA1 recycling at least some of the hydrogen halide within the reactor system to regenerate the carbonyl halide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.