| abstract |
There is provided a storage method of a naphthol aralkyl type cyanate resin solution, wherein the resin in a solution state is less prone to separation even when stored for a long time. The preservation method of described naphthol aralkyl type cyanate ester resin solution (AB) comprises: preparation (i) comprises naphthol aralkyl type cyanate ester resin (A), maleimide compound (B) and A naphthol aralkyl type cyanate resin solution (AB) of a solvent, (ii) comprising a prepolymer of a naphthol aralkyl type cyanate resin (A), a maleimide compound (B) and a solvent A naphthol aralkyl type cyanate resin solution (AB), or (iii) a prepolymer comprising a naphthol aralkyl type cyanate resin (A) and a maleimide compound (B) and a solvent a naphthol aralkyl type cyanate resin solution (AB); and preserving the resin solution (AB). |