Control over reverse addition fragmentation transfer polymerization processes
US9856331B2 · kind B2 · utility
1Cited by
84References
20Claims
0Family size
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Key dates
| Filing date | Mar 24, 2015 |
| Grant date | Jan 2, 2018 |
| Priority date | — |
| Expiry date | Aug 6, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/584
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A procedure for improved temperature control in controlled radical polymerization processes is disclosed. The procedure is directed at controlling the concentration of the persistent radical in ATRP and NMP polymerizations procedures and the concentration of radicals in a RAFT polymerization process by feeding a reducing agent or radical precursor continuously or intermittently to the reaction medium through one of more ports.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.