Process for producing fluorocopolymer, fluorocopolymer, and molded object
US7348386B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2003 |
| Grant date | Mar 25, 2008 |
| Priority date | — |
| Expiry date | Apr 21, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a method for producing a fluorocopolymer which comprises a polymerization reaction of a fluorine-containing ethylenic monomer with a fluorovinyl ether derivative represented by the following general formula (I):CF2═CF—O—[CF2CF(CF3)O]n—(CF2)m-A (I)(wherein n represents an integer of 0 to 3, m represents an integer of 1 to 5, and A represents —SO2X or —COOY; X represents a halogen atom or —NR1R2; R1 and R2 are the same or different and each represents a hydrogen atom, an alkali metal, an alkyl group or a sulfonyl-containing group and Y represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms) to give a fluorocopolymer,said fluorine-containing ethylenic monomer being a perhaloethylenic monomer represented by the following general formula (II):CF2═CF—Rf1 (II)(wherein Rf1 represents a fluorine atom, a chlorine atom, Rf2 or ORf2; Rf2 represents a straight or branched perfluoroalkyl group having 1 to 9 carbon atoms, which may have an ether oxygen atom(s)) and/or a hydrogen-containing fluoroethylenic monomer represented by the following general formula (III):CHX1═CFX2 (III)(wherein X1 represents a hydrogen atom or a fluorine atom and X2 re…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.