Patent ID: 9109097
Filing Date: 2015-08-18
Classification: A61F,A61L,B01J,C08F,C08J

Abstract:
1. A method of preparing a super absorbent polymer, comprising: preparing a first polymer by carrying out a thermal polymerization or photo polymerization of a monomer composition comprising a water-soluble ethylene-based unsaturated monomer and a polymerization initiator; preparing a second polymer by carrying out a thermal polymerization or photo polymerization of a monomer composition comprising a water-soluble ethylene-based unsaturated monomer and a polymerization initiator; drying the first polymer; milling the dried first polymer; and mixing the milled first polymer with the second polymer in the free swelling state using the crosslinking solution to cause a crosslinking reaction of the first and second polymers.