Methods for polymer synthesis
US9512269B2 · kind B2 · utility
7Cited by
0References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2012 |
| Grant date | Dec 6, 2016 |
| Priority date | — |
| Expiry date | Apr 9, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G64/34
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides methods for reducing induction periods in epoxide-CO2 copolymerizations. In certain embodiments, the methods include the step of contacting an epoxide with CO2 in the presence of two catalysts: an epoxide hydrolysis catalyst and an epoxide CO2 copolymerization catalyst. In another aspect, the invention provides catalyst compositions comprising a mixture of an epoxide hydrolysis catalyst and an epoxide CO2 copolymerization catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.