Method for separating organozinc catalyst from polyalkylene carbonate polymerization solution
US12076714B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Sep 28, 2020 |
| Grant date | Sep 3, 2024 |
| Priority date | — |
| Expiry date | May 15, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G64/406
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present disclosure relates to a method for separating an organozinc catalyst from a polyalkylene carbonate polymerization solution, and the method of the present disclosure includes: stirring and aging a polymerization solution including a polyalkylene carbonate resin, an organozinc catalyst, an alkylene oxide and a polymerization solvent; and filtering the polymerization solution after completing the aging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.