Reduction of catalyst usage in epoxide/CO.sub.2 polymerization
US4789727A · kind A · utility
21Cited by
8References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 18, 1987 |
| Grant date | Dec 6, 1988 |
| Priority date | — |
| Expiry date | Dec 18, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G64/34
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The catalyst efficiency of zinc carboxylate catalyst in the copolymerization of alkylene oxides with carbon dioxide to form polycarbonates has been increased by the addition of a small amount of certain diepoxides to the reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.