PURPOSE: To obtain aromatic polyether imide-based resin composition for molding having excellent processability and improved heat resistance, chemical resistance and mechanical strength by blending specific thermoplastic polyimide to aromatic polyether imide.
CONSTITUTION: (A) 100 pts.wt. aromatic polyether imide is blended with (B) 1-100 pts.wt. thermoplastic polyimide having repeating unit expressed by formula II (R is tetrafunctional group selected from ≥2C aliphatic group, cycloaliphatic group or monocyclic aromatic group, etc.), obtained by imidizing of polyamic acid resulted from reaction of ether diamine expressed by formula I and at least one tetracarboxylic dianhydride, by, for instance, preliminary blending of A and B in Henschel mixer, etc., made to powdery, then mixed in molten state at 280-420°C, preferably 300-400°C with twin-screw melt extruder, etc., to afford the aimed aromatic polyether imide resin composition.
OTA MASAHIRO
KAWASHIMA SABURO
IIYAMA KATSUAKI
TAMAI MASAJI
YAMAGUCHI TERUHIRO
