| abstract |
The present invention provides a method for producing a perfluoroelastomer, wherein a perfluoroelastomer is obtained by polymerizing a perfluoromonomer in an aqueous medium in the presence of a polymer (1) that contains a polymerization unit (1) based on a monomer represented by general formula (1). (1): CX2=CY(-CZ2-O-Rf-A) (In the formula, X moieties may be the same or different, and each represents –H or –F; Y represents –H, -F, an alkyl group or a fluorine-containing alkyl group; Z moieties may be the same or different, and each represents –H, -F, an alkyl group or a fluoroalkyl group; Rf represents a fluorine-containing alkylene group having from 1 to 40 carbon atoms or a fluorine-containing alkylene group having an ether bond and from 2 to 100 carbon atoms; and A represents –COOM, -SO3M, -OSO3M or –C(CF3)2OM (wherein M represents –H, a metal atom, -NR7 4, an optionally substituted imidazolium, an optionally substituted pyridinium or an optionally substituted phosphonium; and R7 represents –H or an organic group); provided that at least one of X, Y and Z contains a fluorine atom.) |