Ketone bisulfites as reducing agent for free radical polymerization
US4360632A · kind A · utility
11Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1981 |
| Grant date | Nov 23, 1982 |
| Priority date | — |
| Expiry date | Oct 23, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F4/40
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to an improvement in a process for producing a latex containing dispersed polymer. The improvement in the process for polymerizing a reaction mixture of vinyl monomer, stabilizer, oxidizing agent and reducing agent comprises using a water-soluble ketone bisulfite as the reducing agent, either alone or with other reducing agents, the ketone having from 3 to 8 carbon atoms in the structure. During the polymerization, the ketone bisulfite is maintained in stoichiometric excess of the oxidizing agent. Vinyl acetate-ethylene copolymers are some of the preferred polymer systems produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.