Process for producing peroxide-vulcanizable, fluorine-containing

Details Process for producing peroxide-vulcanizable, fluorine-containing Process for producing peroxide-vulcanizable, fluorine-containing

1992-12-07

1993-07-06

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526247, C08F 202

Patent

active

052255042

ABSTRACT:
A fluorine-containing elastomer capable of giving a primary vulcanization product with a good permanent set through peroxide vulcanization is produced by homopolymerization or copolymerization of a fluorine-containing olefin having 2 to 8 carbon atoms in the presence of an iodine and bromine-containing compound represented by the general formula RBrnIm, wherein R represents a fluorohydrocarbon group, a chlorofluorohydrocarbon group, a chlorohydrocarbon group or a hydrocarbon group, and n and m each are integers of 1 and 2, and a small amount of perfluoro(vinylether) compound having a general formula of CF.sub.2 .dbd.CFO[CF.sub.2 CF(CF.sub.3)O]m(CF.sub.2)nX, wherein X is a bromine atom or an iodine atom and m and n each are 1, 2 or 3.

REFERENCES:
patent: 4748223 (1988-05-01), Haruyoshi
patent: 4943622 (1990-07-01), Naraki
patent: 4948852 (1990-08-01), Moore
patent: 4973633 (1990-11-01), Moore
patent: 4973634 (1990-11-01), Logothetis
patent: 5032655 (1991-07-01), Moore
patent: 5151492 (1992-09-01), Abe

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