The polyimide soluble in an organic solvent containing PMDA, DADE, the BCD and BPDA

摘要

(A) pyromellitic dianhydride (PMDA), (b) biphenyl dianhydride (BPDA), (c) bi-cyclooctene dianhydride and (BCD) (d) diaminodiphenyl ether (DADE) includes as a component, to provide a heat-resistant polyimide soluble in an organic solvent. Polyimides of the present invention are synthesized by three-step addition reaction, in a first step, to produce a low molecular weight imide compound by reaction with an aromatic diamine and dianhydride, the second stage, was produced in the first stage consists in to produce a low molecular weight imide compound by reacting an aromatic diamine and dianhydride further low molecular weight imide compound, in the third stage, to carry out polycondensation reaction, the thermal decomposition in the range of 530 ℃ ~570 ℃ It is heat-resistant polyimide soluble in an organic solvent with an onset temperature.