Patent ID: 6180724
Filing Date: 2001-01-30
Classification: A61F,A61L,C08F

Abstract:
A process of manufacturing an absorbing agent, comprising the steps of:mixing a precursor of an absorbing agent having a carboxylic group with first and second surface crosslinking agents reactive to the carboxylic group, said precursor having an undefined shape, an average particle diameter of 200 .mu.m-600 .mu.m, and a ratio of particles having a diameter of not more than 106 .mu.m of 10 percent by weight, said first surface crosslinking agent having a solubility parameter of not less than 12.5 (cal/cm.sup.3).sup.1/2, said second surface crosslinking agent having a solubility parameter of less than 12.5 (cal/cm.sup.3).sup.1/2 ; andperforming a heat treatment so as to obtain an absorbing agent having a diffusing absorbency under pressure measured when 60 minutes elapsed of not less than 30 g/g.