AQUEOUS ABSORPTIVE POLYMER-CONTAINING RESIN COMPOSITION-PRODUCING METHOD, AQUEOUS ABSORPTIVE POLYMER-CONTAINING RESIN COMPOSITION, AND POROUS SUBSTANCE-PRODUCING METHOD USING SAME AND POROUS SUBSTANCE, INSULATED ELECTRIC CABLE-PRODUCING METHOD, INSULATED ELECTRIC CABLE AND COAXIAL CABLE

摘要

A method for producing an aqueous absorptive polymer-containing resin composition in which a resin composition is doped with an aqueous absorptive polymer includes causing the aqueous absorptive polymer to absorb and be swollen by water beforehand, and milling and microparticulating the water-absorbed and -swollen absorptive polymer at an ultrasonic flow pressure of not less than 50 MPa.