| 摘要 |
A method of enhancing the water absorbance of and increasing the particle size of fine water absorbent cross-linked polyacrylic polymer particles includes impregnating the polymer particles with an impregnating monomer solution containing an acrylic monomer, with or without a cross-linking agent for the acrylic monomer. The solution is impregnated into the resin in a weight ratio of cross-linked polyacrylic polymer, dry basis, to impregnating monomer solution in the range of about 1:1 to about 1:10; and subjecting the impregnated polymer to conditions, such as increased temperature, e.g., 100 DEG C.-150 DEG C. to polymerize the impregnated monomer, within the cross-linked polymer particles, to form a cross-linked polyacrylic polymer having enhanced water absorbance and increased particle size.
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