Elastic fluorocopolymer, its composition and crosslinked rubber
US7884166B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2007 |
| Grant date | Feb 8, 2011 |
| Priority date | — |
| Expiry date | Nov 7, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F214/18
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An elastic fluorocopolymer comprises repeating units (l) based on a fluoromonomer such as tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride or CF2═CF—O—Rf (wherein Rf is a C1-8 saturated perfluoroalkyl group or a perfluoro(alkoxyalkyl) group) and repeating units (m) based on the formula CR1R2═CR3COOCH═CH2 (wherein each of R1 and R2 is a hydrogen atom, a C1-10 alkyl group or a C1-10 alkoxyalkyl group containing an etheric oxygen atom, and R3 is a hydrogen atom, a fluorine atom or a methyl group) in a molar ratio of (m)/((l)+(n))=0.0001 to 0.1. Further, an elastic fluorocopolymer composition comprises (A) the above elastic fluorocopolymer, (B) an unsaturated multifunctional compound and (C) a bivalent metal oxide and/or hydroxide. The elastic fluorocopolymer and the elastic fluorocopolymer composition are excellent in the crosslinkability and can provide a crosslinked rubber thereof excellent in crosslinked rubber properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.