DEUTERATED POLYIMIDES AND DERIVATIVES THEREOF

摘要

The object of the present invention is to provide a polyimide compound useful as a raw material of a polymer for an optical waveguide that has excellent transparency and heat resistance, low moisture absorption, a small optical transmission loss, a high refractive index and good adhesion to a base material or a substrate. The present invention is inventions of a method for producing a deuterated polyamic acid compound represented by the general formula [2]:
wherein R 1 indicates a tetravalent alicyclic hydrocarbon group or a tetravalent aromatic hydrocarbon group, which may have a heavy hydrogen atom; R 2 indicates a divalent aromatic hydrocarbon group having a heavy hydrogen atom; and m indicates an integer not less than 1,
which comprises reacting an acid anhydride represented by the general formula [3]:
wherein R 1 has the same meaning as above, with a deuterated diamine compound represented by the general formula [4]:
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒH 2 N-R 2 -NH 2 €ƒ€ƒ€ƒ€ƒ€ƒ[4]
wherein R 2 has the same meaning as above; a method for producing a deuterated polyimide compound represented by the general formula [1]:
wherein R 1 indicates a tetravalent alicyclic hydrocarbon group or a tetravalent aromatic hydrocarbon group, which may have a heavy hydrogen atom; R 2 indicates a divalent aromatic hydrocarbon group having a heavy hydrogen atom; and n indicates an integer not less than 1, which comprises subjecting thus obtained deuterated polyamic acid compound to a ring closure reaction; a method for producing a deuterated polyimide compound represented by the general formula [1] which comprises reacting an acid anhydride represented by the above general formula [3] with a deuterated diamine compound represented by the above general formula [4] and then subjecting the reaction product to a ring closure reaction; use of a deuterated polyimide compound obtained by the above production methods as a raw material polymer for an optical waveguide; a film for an optical waveguide containing said deuterated polyimide compound; a deuterated polyimide compound; and a deuterated polyamic acid compound.