Emulsion polymerization of vinylidene fluoride polymers in the presence of trichlorofluoromethane as chain transfer agent
US4569978A · kind A · utility
58Cited by
3References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 17, 1985 |
| Grant date | Feb 11, 1986 |
| Priority date | — |
| Expiry date | Apr 17, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2438/01
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Vinylidene fluoride polymers having a wide range of molecular weights are produced with reduced initiator consumption by using trichlorofluoromethane as a chain transfer agent in the emulsion polymerization process. Vinylidene fluoride homopolymers made by the process have a significantly reduced tendency to generate cavities at high temperatures and a greater resistance to discoloration at high temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.