Method for preparing polyols
US10774179B2 · kind B2 · utility
4Cited by
9References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2017 |
| Grant date | Sep 15, 2020 |
| Priority date | — |
| Expiry date | Nov 10, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/2663
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a method for preparing a polycarbonate ether polyol, by reacting an epoxide and carbon dioxide in the presence of a catalyst of formula (I), a double metal cyanide (DMC) catalyst and a starter compound. The catalyst of formula (I) is as follows:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.