PURPOSE: To obtain the polyimide resin composition which can be thermally treated at a low temp. in a short time and is excellent in dimensional stability, flowability, etc., by blending a given polyimide with a polyetheretherketone to cause the resulting composition to have a specific value of crystallization enthalpy after heat treatment.
CONSTITUTION: The composition comprises 50-95 pts.wt. polyimide resin having a repeating unit represented by the formula (wherein X is a direct bond, a 1-10C divalent hydrocarbon group, hexafluoroisopropylidene, carbonyl, thio, sulfonyl, or oxo; Y1 to Y4 each is H, a 1-9C alkyl, a 1-9C alkoxy, Cl, or Br; and R1 is a 2-27C tetravalent group selected from among a (monocyclic) aliphatic group, a monocyclic aromatic group; a fused aromatic group, and a nonfused polycyclic aromatic group consisting of aromatic groups bonded together directly or through a crosslinking member) and 50-5 pts.wt. polyetheretherketone. It has a crystallization enthalpy of 0-6cal/g after heating at 250-330°C (as measured with a differential scanning calorimeter at a heating rate of 10°C/min).
MORITA ATSUSHI
TAKAHASHI TOSHIAKI
ITOU KAYAKO
SHIMAMURA KATSUICHI
OCHI HIROYASU
TOMIMOTO HIROAKI
TAKIZAWA NOBUHIRO
GOTO YOSHIHISA
