| 摘要 |
The invention provides an amorphous wholly aromatic polyester amide which has excellent stretching property and good adhesion to a heterogeneous polymer and thereby can be suitably used for a multilayer film, a multilayer blow molded article and the like. That is, the amorphous wholly aromatic polyester amide which is a wholly aromatic polyester amide obtained by copolymerizing (A) 4-hydroxybenzoic acid, (B) 2-hydroxy-6-aphthoic acid, (C) aromatic aminophenol and (D) aromatic dicarboxylic acid, wherein (1) the ratio of (C) the aromatic aminophenol is from 7 to 35% by mol, (2) the ratio of a bending monomer among starting material monomers is from 7 to 35% by mol, (3) the ratio ((A)/(B)) between (A) the 4-hydroxybenzoic acid and (B) the 2-hydroxy-6-naphthoic acid is from 0.15 to 4.0, (4) the ratio of isophthalic acid is at least 35% by mol or more in (D) the aromatic dicarboxylic acid, (5) a melting point is not observed by DSC measurement at a temperature rising rate of 20° C./min and (6) the glass transition temperature is from 100 to 180° C.
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