Ethane as a chain transfer agent for vinylidene fluoride polymerization
US6649720B2 · kind B2 · utility
2Cited by
11References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 2, 2002 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Jan 2, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F14/22
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Vinylidene fluoride polymers are produced by using ethane 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.