| abstract |
A wholly aromatic polyester that is particularly suitable for use in multilayer films, multilayer sheets, multilayer blow-molded articles, and the like because of its low volume expansion coefficient, excellent high dimensional stability, and excellent heat resistance. provide. A wholly aromatic polyester that exhibits optical anisotropy when melted, containing structural units introduced from 4-hydroxybenzoic acid, 2,6-naphthalenedicarboxylic acid, and hydroquinone at a specific ratio. [Selection figure] None |