Patent ID: 7018497
Filing Date: 2006-03-28
Classification: A61F,A61L,B01J

Abstract:
1. A method of making an absorbent structure, comprising the steps of: providing a first superabsorbent polymer precursor composition including a superabsorbent-forming monomer, a crosslinking agent and a reducing agent; providing a second superabsorbent polymer precursor composition including a superabsorbent-forming monomer, a crosslinking agent and an oxidizing agent; providing a pre-formed substrate; adding one of the first and second superabsorbent polymer precursor compositions to the substrate at a plurality of spaced-apart locations; adding the other of the first and second superabsorbent polymer precursor compositions to the substrate; and chemically reacting the first and second superabsorbent polymer precursor compositions at the plurality of spaced-apart locations to form a plurality of discrete, spaced-apart microdomains of superabsorbent polymer adhering to the substrate; wherein the first and second superabsorbant polymer precursor compositions are not combined with each other before being added to the substrate.