Catalytic aromatic carbonate process using manganese tetradentate redox co-catalysts
US4349485A · kind A · utility
11Cited by
5References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 23, 1979 |
| Grant date | Sep 14, 1982 |
| Priority date | — |
| Expiry date | Nov 23, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C68/01
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An enhanced catalytic aromatic carbonate process which comprises contacting a phenol, carbon monoxide, an oxidant, a base, the Group VIIIB element selected from ruthenium, rhodium, palladium, osmium, iridium or platinum, and a manganese tetradentate redox co-catalyst. The resulting aromatic mono- and/or poly-carbonates are useful in the preparation of polycarbonates or as polycarbonates per se, respectively, which can be molded or formed into films, sheets, fibers, laminates or reinforced plastics by conventional techniques.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.