Tetrafluoroethylene copolymer

Details Tetrafluoroethylene copolymer Tetrafluoroethylene copolymer

2006-03-07

2006-03-07

Wu, David W. (Department: 1713)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S250000, C526S255000

Reexamination Certificate

active

07009018

ABSTRACT:
Provided is a tetrafluoroethylene copolymer consisting of a unit based on tetrafluoroethylene and a unit based on a monomer represented by CF2═CFORf1Rf2(where Rf1is a polyfluoroalkylene group which may contain an etheric oxygen atom and Rf2is a polyfluorocycloalkyl group which may contain an etheric oxygen atom), wherein a content of the latter is from 0.005 to 0.5% by mass. The tetrafluoroethylene copolymer is excellent both in paste extrudability and in heat resistance, has characteristics such as excellent transparency of a molded product, and is suitably applicable to paste extrusion and compression molding.

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