The present invention provides a preparation method of a sulfone polymer resin, comprising the following steps: uniformly mixing an alkali metal salt of a bisphenol monomer and dichlorodiphenyl sulfone; injecting the mixed monomers and a passivation component into a twin-screw extruder, and carrying out reactive extrusion under certain conditions to obtain a crude resin; and crushing, washing and drying the crude resin to obtain a finished resin. In the present invention, reactive extrusion is directly carried out on the monomers, completely avoiding the use of organic solvents, thereby avoiding various side reactions and solvent recovery problems caused thereby. The method adopted by the present invention is simple and feasible, with high production efficiency, small equipment occupation, less three wastes in production and high economic benefits.
Country Code: CN
Application Number: CN202410050180.8
