Patent ID: 6635717
Filing Date: 2003-10-21
Classification: C08F,C09K

Abstract:
A molding material comprising a solid fluorine-containing multi-segment polymer having an elastomeric fluorine-containing polymer chain segment and a non-elastomeric fluorine-containing polymer chain segment, in which said elastomeric fluorine-containing polymer chain segment imparts flexibility to the whole polymer and has perhaloolefin units as a recurring unit in an amount of not less than 95% by mole, said non-elastomeric fluorine-containing polymer chain segment consists essentially of 85 to 100% by mole of tetrafluoroethylene and 0 to 15% by mole of CF2&boxH;CFâ€”Rf1, in which Rf1 is CF3 or ORf2, wherein Rf2 is a perfluoroalkyl group having 1 to 5 carbon atoms, and in said fluorine-containing multi-segment polymer, A/(A+C) is equal to or larger than 65% by weight, provided that the elastomeric fluorine-containing polymer chain segment is represented by A, the non-elastomeric fluorine-containing polymer chain segment is represented by B, the fluorine-containing multi-segment polymer is represented by B-A-B or A-B and a polymer molecule consisting of the elastomeric fluorine-containing polymer chain segment A which is not bonded to the non-elastomeric fluorine-containing polymer chain segment B is represented by C.