| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject composition capable of exhibiting excellent heat resistance, mechanical characteristics, low absorption, etc., and forming an insulating coating film having an excellent low relative dielectric constant, etc. by making the composition include a copolymer having a specific constituent unit and an organic solvent. SOLUTION: This composition comprises (A) a copolymer having a constituent unit of the formula (R1 and R2 are each an alkyl, an aryl, an alkoxy, an aryloxy or the like; (m) and (n) are each 0-5; X a single bond, O, S, CO or the like; A is an arylene, a heteroarylene or the like; Z1 and Z2 are each a single bond or an arylene; and Y is O or the like) and (B) an organic solvent (e.g. methyl cellosolve, methyl ethyl ketone, N,N-dimethylformamide, etc.). The copolymer is obtained, for example, by subjecting a monomer of a quinoline and a diol monomer to polycondensation. The amount of the component B used is preferably an amount to make the concentration of the solid content of the component A 1-60 wt.%. The composition is applied to a substrate and dried to form an insulating coating film.
|
