Aromatic polyesters, polyesteramides, and compositions thereof

An aromatic polyesteramide composition comprising

• 100 parts by weight of an aromatic polyesteramide consisting essentially of units I, II, III, IV, V, and VI of the following formulae:
• ##STR79## wherein X is a radical selected from the group consisting of a hydrogen atom, a halogen atom, an alkyl radical having 1 to 4 carbon atoms, an alkoxy radical having 1 to 4 carbon atoms, and an aryl radical having 6 to 10 carbon atoms,
• Y is --O-- or ##STR80## Z.sub.1 is --NH--, and Z.sub.2 is --NH--, --O-- or ##STR81## Z.sub.1 and Z.sub.2 are in para or meta relation to each other, in the following molar amounts:
• ______________________________________ unit I 40 to 70 mol %, unit II 2 to 5 mol %, units III + IV 6 to 36 mol %, unit V 10 to 40 mol %, unit VI 0.1 to less than 5 mol %, ______________________________________
• with the molar ratio of unit III/(units III+IV) ranging from 1/10 to 8/10, and
• 1to 400 parts by weight of an inorganic filler.

A magnetic resin composition comprising

• 100 parts by weight of an aromatic polyesteramide consisting essentially of units I, II, III, IV, V, and VI of the following formulae:
• ##STR82## wherein X is a radical selected from the group consisting of a hydrogen atom, a halogen atom, an alkyl radical having 1 to 4 carbon atoms, an alkoxy radical having 1 to 4 carbon atoms, and an aryl radical having 6 to 10 carbon atoms,
• Y is --O-- or ##STR83## Z.sub.1 is --NH--, and Z.sub.2 is --NH--, --O-- or ##STR84## Z.sub.1 and Z.sub.2 are in para or meta relation to each other, in the following molar amounts:
• ______________________________________ unit I 40 to 70 mol %, unit II 2 to 5 mol %, units III + IV 6 to 36 mol %, unit V 10 to 40 mol %, unit VI 0.1 to less than 5 mol %, ______________________________________
• with the molar ratio of unit III/(units III+IV) ranging from 1/10 to 8/10, and
• 100to 1900 parts by weight of a magnetic powder.