Emulsion polymerization process
US4301264A · kind A · utility
13Cited by
1References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 1980 |
| Grant date | Nov 17, 1981 |
| Priority date | — |
| Expiry date | May 14, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F6/006
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for reducing the residual monomer level of a polymer latex prepared by emulsion polymerization comprises exposing the latex in a separate vessel from that in which the main polymerization has been carried out to conditions under which free radicals are produced by a secondary catalyst added to the latex, the said catalyst being oil soluble or having an oil soluble component. In a preferred embodiment a polymer latex prepared by the emulsion polymerization of styrene alone or a mixture containing styrene having a residual styrene level not exceeding 0.1% based on latex volume may be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.