Patent ID: 6291636
Filing Date: 2001-09-18
Classification: A61L,B01J,C08F,C08J

Abstract:
A manufacturing method of absorbent resin comprising:a drying step of drying hydrogel of a crosslinked polymer to obtain a product;a pulverizing step of pulverizing said product; anda separating step performed when the product has a water content exceeding 15 wt. % as calculated by an equation[(wt.sub.0 -wt.sub.1 /wt.sub.0 ].times.100where wt.sub.0 is a weight of the hydrogel of the crosslinked polymer before it is dried, and wt.sub.1 is a weight of the hydrogel of the crosslinked polymer after it has been dried for 3 hours at 180.degree. C.the separating step of separating incompletely dried material of said hydrogel of the crosslinked polymer from the product,said separating step being conducted one of before and during said pulverizing step.