Process for producing thermoplastic aromatic polysulfone resin, process for producing epoxy composition, and process for producing epoxy cured product

摘要

(1) to (3): (A) a dihalogeno compound represented by the formula (I), (B) a dihydric phenol represented by the formula (II) and (C) , And carrying out a polymerization reaction in an organic solvent. 2. Description of the Related Art (1) 0.900 (A) / (B) 0.990, (2) {(A) / (B)}-0.02 (C) / (B) {(A) / B)} + 0.01, (3) (C) / (B) 1.00 In the formulas (I) and (II), R1 to R4 each represent an alkyl group having 1 to 4 carbon atoms or X and X 'are halogen atoms and Y is selected from the group consisting of--SO 2-,--C (CH 3) 2-,--CH 2-,-O-and--CO--One or more groups or single bonds, and n1, n2, n3 and n4 represent an integer of 0 to 4. ]