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Aqueous absorptive polymer-containing resin composition-producing method, aqueous absorptive polymer-containing resin composition, and porous substance-producing method using same and porous s

Image Number 2 for United States Patent #8129439.

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.

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