MODIFIER FOR AROMATIC POLYESTER AND AROMATIC POLYESTER RESIN COMPOSITION COMPRISING THE SAME
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Abstract
The present invention provides a modifier for aromatic polyesters which enhances the melt fluidity of aromatic polyesters without a significant decrease in the heat resistance of the aromatic polyesters, and an aromatic polyester resin composition including the modifier for aromatic polyesters. The present invention relates to a modifier for aromatic polyesters comprising polyhydric phenol residues and residues of aromatic polycarboxylic acid, acid halide or acid anhydride thereof, and the modifier comprises a material having a structure composed of a first residue selected from the group consisting of divalent residues represented by Formula (I): -Ar-W1x-Ar- and by Formula (II): -Ar-, the first residues being bonded to two identical or different second residues selected from the group consisting of monovalent residues represented by Formula (III): (see formula III) and monovalent residues represented by Formula (IV): -O-C(O)-R7-.
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