Redox system and process
US6713557B2 · kind B2 · utility
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2References
14Claims
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Key dates
| Filing date | Nov 20, 2001 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | May 11, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F4/40
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for preparing an aqueous emulsion polymer including providing at least one ethylenically unsaturated monomer and a free radical redox initiator system under emulsion polymerization conditions, the redox initiator system including an oxidant; a reductant and a metal promoter complex, and effecting the polymerization of at least some of the ethylenically unsaturated monomer is provided. Also provided is a process for reducing the residual ethylenically unsaturated monomer content of an aqueous emulsion polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.