Patent ID: 7071273

Claim:
A tetrafluoroethylene copolymer capable of undergoing paste extrusion comprising a unit based on tetrafluoroethylene and a unit based on a monomer represented by the following general formula (1), wherein a content of the unit based on the monomer represented by the general formula (1) is from 0.1 to 0.5% by mass, wherein a particle size of a primary particle is from 0.1 to 0.5 μm, wherein a standard specific gravity is from 2.14 to 2.25, wherein the copolymer is capable of undergoing paste extrusion at a pressure of from 24.5 to 73.5 MPa without undergoing melt molding, CF 2 ═CF—O—(CF 2 ) n CF═CF 2 (1) (wherein n is an integer of from 1 to 6).