Cotelomers of vinilydene fluoride with fluorinated olefins and process for their preparation
US4810765A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1987 |
| Grant date | Mar 7, 1989 |
| Priority date | — |
| Expiry date | Jun 29, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F214/22
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Cotelomers of vinylidene fluoride with one or more fluoro olefins, having the general formula EQU R[(CF.sub.2 CH.sub.2)n (C.sub.3 F.sub.6)m (C.sub.2 F.sub.4)p (C.sub.2 F.sub.3 Cl)q]X (I) wherein: X is either Br or I, R is an alkyl radical eventually containing halogen atoms, n is an integer comprised within the range of from 1 to 30, m is an integer comprised within the range of from 0 to 10, p and q are integers comprised within the range of from 0 to 20, and wherein m+p+q is at least 1, obtained by cotelomerizing monomers in the presence of a telogen RX (wherein R and X have the abovesaid meaning) and of a free-radical polymerization initiator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.