Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1992-04-09
1993-10-05
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
528502, C08F 210
Patent
active
052506401
ABSTRACT:
A method for the production of a particulate hydrogel polymer by the exposure of a hydrogel polymer possessing a cross-linked structure to shear force in a vessel thereby finely dividing said hydrogel polymer, which method comprises exerting shear force repeatedly on said hydrogel polymer while keeping said hydrogel polymer at a temperature in the range of from 40.degree. to 110.degree. C. under a mechanical pressure in the range of from 0.01 to 1.5 kg/cm.sup.2, and method for the production of an absorbent resin comprising drying the resultant particulate hydrogel polymer.
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Hatsuda Takumi
Irie Yoshio
Kimura Kazumasa
Yonemura Koichi
Nippon Shokubai Co. , Ltd.
Schofer Joseph L.
Wu David
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