Continuous process for manufacturing aliphatic polycarbonates from carbon dioxide and epoxides
US8546514B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Sep 2, 2010 |
| Grant date | Oct 1, 2013 |
| Priority date | — |
| Expiry date | Jun 22, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G64/34
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed is a continuous process for manufacturing aliphatic polycarbonate by polymerizing carbon dioxide and one or more epoxide compound in the presence of catalyst, in which carbon dioxide, one or more epoxide compound, and the catalyst are continuously supplied to polymerization reactor to produce aliphatic polycarbonate, separate unreacted carbon dioxide and epoxide compound and recycle them as raw materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.