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Absorbent Cores Comprising a Superabsorbent Polymer Immobilizing Material:

U.S. Patent No. 11,779,496

Author Image

By: Tara Olivo

Associate Editor at Nonwovens Industry, Rodman Media

Torsten Lindner, Kronberg, Germany; Robert Haines Turner, Cincinnati, OH; Christian Neu, Eppstein, Germany; Matthias Morand, Bad Soden, Germany; Gabriele Stiehl, Bad Soden, Germany; Erik Hauck, Pirmasens, Germany; Jeremia Schwabe, Augsburg, Germany; Simon Bodendorfer, Gersthofen, Germany; Matthias Roessle, Reutern, Germany; and Sebastijan Bach, Charlotte, NC.
Assigned to The Procter and Gamble Company, Cincinnati, OH.

Filed: 7/24/19
Issued: 10/10/23

1. An absorbent article comprising an absorbent core; wherein the absorbent core comprises a superabsorbent polymer material and a superabsorbent polymer immobilizing material; wherein the superabsorbent polymer immobilizing material comprises from about 20% to about 70% of a first polymer, by weight of the superabsorbent polymer immobilizing material; wherein the superabsorbent polymer immobilizing material comprises from about 30% to about 80% of a second polymer, by weight of the superabsorbent polymer immobilizing material; wherein the first polymer has a peak molecular weight of from about 65,000 g/mol to about 700,000 g/mol, according to the Peak Molecular Weight Test Method described herein; wherein the first polymer is a random and/or block copolymer having ethylene derived units and/or C3-C10 alpha olefin derived units, or the first polymer is a polyolefinic homopolymer having ethylene derived units or propylene derived units or 1-butene derived units, or the first polymer is a styrenic block copolymer; wherein the second polymer has a peak molecular weight of from about 1,000 g/mol to about 60,000 g/mol, according to the Peak Molecular Weight Test Method described herein; wherein the second polymer is a polyolefin; wherein the superabsorbent polymer immobilizing material has a Shear Viscosity at 10 (1/s) at 230° C. of from about 300 mPa·s to about 10,000 mPa·s, according to the Viscosity Rheometry Test Method described herein; and wherein the superabsorbent polymer immobilizing material is substantially free of a tackifier.

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