Diaryl carbonate process
US4410464A · kind A · utility
27Cited by
2References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 15, 1982 |
| Grant date | Oct 18, 1983 |
| Priority date | — |
| Expiry date | Mar 15, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C68/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Diphenyl carbonates are prepared by the reaction of phenol and a dialkyl carbonate in the presence of an effective amount of a suitable catalyst and a molecular sieve. The alkyl aryl carbonate produced in the first step of the reaction can be converted to the diaryl carbonate by further reaction with phenol, in the absence of molecular sieves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.