Process of polymerizing chloroetrifluoroethylene with alkyl hydroperoxide and metal metabisulfite
US5453477A · kind A · utility
49Cited by
10References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1994 |
| Grant date | Sep 26, 1995 |
| Priority date | — |
| Expiry date | Mar 7, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F14/24
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Process for the production of PCTFE homopolymer and/or copolymer resins by the use of an aqueous suspension system incorporating a redox initiator system which comprises t-butyl hydroperoxide and sodium metabisulfite to initiate the polymerization or copolymerization process. The process parameters may be controlled to provide a PCTFE homopolymer or copolymer resin having a desired target range of molecular weights. The process provides stable PCTFE polymer suspensions which exhibit a low tendency to coagulate and further exhibit good wettability of the homopolymer and copolymer particles, notably in the absence of soaps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.