Method for preparing polyether carbonates
US11851525B2 · kind B2 · utility
1Cited by
22References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2018 |
| Grant date | Dec 26, 2023 |
| Priority date | — |
| Expiry date | May 6, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G64/34
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a method for preparing a high molecular weight polyether carbonate, by reacting an epoxide and carbon dioxide in the presence of a catalyst of formula (I), and a double metal cyanide (DMC) catalyst. The catalyst of formula (I) has the following structure:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.