Aromatic polyester, aromatic polyester amide, filaments thereof and compositions thereof each containing an inorganic filler or magnetic powder.

摘要

Provided herein are an aromatic polyester having superior physical properties which is composed of the following units an aromatic polyester amide formed by introducing a prescribed amount of amide linkage into said aromatic polyester; filament thereof; and a composition formed by adding an inorganic filler or magnetic powder to said polymers.