Process for producing polycarbonates and a coordination complex used therefor
US8829156B2 · kind B2 · utility
0Cited by
8References
3Claims
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Key dates
| Filing date | Mar 30, 2012 |
| Grant date | Sep 9, 2014 |
| Priority date | — |
| Expiry date | Jun 10, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G64/34
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The complex of the present invention containing an onium salt and a central Lewis acidic metal has a high catalytic activity at a high temperature for the copolymerization of an epoxide and carbon dioxide to produce a high molecular weight polycarbonate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.