Carbon dioxide as a catalyst quench agent in solution polymerization, and products made therefrom
US11117983B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Jul 5, 2018 |
| Grant date | Sep 14, 2021 |
| Priority date | — |
| Expiry date | Jul 5, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F4/65912
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for making a polymer, having the steps of (a) polymerizing one or more monomers in the presence of a solvent and a catalyst to form a reaction product; (b) removing an effluent from the reaction product, where the effluent comprises an active catalyst and one or more unreacted monomers; (c) combining a quench, comprising carbon dioxide, with the effluent to form a quenched polymer stream, having a carboxyl metal complex; and (d) recovering a polymer from the quenched polymer stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.