Method of copolymerizing ethylene carbonate with one or more cyclic esters
US9371418B2 · kind B2 · utility
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Key dates
| Filing date | Jun 13, 2013 |
| Grant date | Jun 21, 2016 |
| Priority date | — |
| Expiry date | Jun 13, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G64/18
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for copolymerizing selectively i) ethylene carbonate with ii) one or more cyclic esters can include contacting the ethylene carbonate with the one or more cyclic esters in the presence of a catalyst. The catalyst can be a Zn-complex with a diaminophenolate ligand (NNO) or a β-diiminate ligand (BDI).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.