Process for immortal ring-opening polymerisation of cyclic esters and cyclic carbonates
US9133304B2 · kind B2 · utility
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Key dates
| Filing date | Nov 25, 2014 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | Nov 25, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G64/38
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention discloses new catalyst systems based on complexes of divalent metals supported by chelating phenoxy ligands for immortal ring-opening polymerization of cyclic esters and cyclic carbonates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.