POLYPHENYLENSULFIDFOLIE

摘要

An at least uniaxially orientated film comprising a polyphenylene sulfide resin containing from 2 to 30% by mole of m-phenylene sulfide recurring units, the polyphenylene sulfide resin being composed of a blend of a polyphenylene sulfide (1) containing at least 15% by mole of m-phenylene sulfide recurring units and a polyphenylene sulfide (2) containing at least 95% by mole of p-phenylene sulfide recurring units. A process for making the blend comprises preparing each component by reacting m- or p- dichlorobenzene and optionally a halogen substituted monomer capable of providing other recurring units with an alkali metal sulphide in an amide polar solvent in the presence of a polymerisation catalyst at a high temperature and pressure followed by blending.