| 摘要 |
PROBLEM TO BE SOLVED: To improve edge splitting strength by combining a thermoplastic polymer and an amorphous polymer which can form an optically isomeric fused phase by a specified rate without damaging superior characteristics of the thermoplastic polymer. SOLUTION: A polymer alloy is composed of 97.1-99.0 wt.% of a thermoplastic polymer and 1.0-2.9 wt.% (based on the total amount of the polymers) of an amorphous polymer which can form an optically isomeric fused phase. A thermoplastic liquid crystal polymer is preferably a copolymer composed of a p-hydroxy benzoic acid structure unit and a 6-hydroxy-2-naphthoic acid structure unit, most preferably the copolymer containing the former of 60-90 mole %. The amorphous polymer includes, for example,αpolysulfone, a polyether sulfone, a polyarylate and the like, and most preferably is a polyarylate composed of an aromatic discarboxylic acid unit and a diphenol unit in terms of stability as a polymer alloy.
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