Fluorinated elastic copolymer and method for its production
US8927668B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2012 |
| Grant date | Jan 6, 2015 |
| Priority date | — |
| Expiry date | Jul 17, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B3/445
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
To provide a fluorinated elastic copolymer which is excellent in crosslinking reactivity and extrusion moldability and which is curable to obtain a rubber excellent in permanent compression set resistance, base resistance and oil resistance and particularly suitable as a covering material for electric wires. A fluorinated elastic copolymer obtained by copolymerizing tetrafluoroethylene, propylene and optionally another monomer, wherein the molar ratio (a)/(b) of repeating units (a) derived from tetrafluoroethylene to repeating units (b) derived from propylene in the fluorinated elastic copolymer is from 60/40 to 75/25, and repeating units (c) derived from said another monomer is from 0 to 10 mol % in the fluorinated elastic copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.