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Patents

Absorbent Articles with Biocompostable Properties

U.S. Patent No. 12,059,334

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By: Tara Olivo

Associate Editor at Nonwovens Industry, Rodman Media

Ryan Nicholas Chan, Raleigh, NC; Gordon Sidney Cox, Durham, NC; Hailey Katherine Davis, Raleigh, NC; and Vladimiro Nettel, Kirkland, Canada.
Assigned to Tethis, Inc., Raleigh, NC

Filed: 9/30/20
Issued: 8/13/24

An absorbent sanitary article, comprising: a fluid-permeable top layer; a fluid-resistant back layer; and an absorbent core; wherein the absorbent core includes an absorbent fiber and a superabsorbent polymer (SAP); wherein the SAP includes a charge modified starch-based biopolymer; wherein the charge modified starch-based biopolymer is biocompostable or biodegradable; wherein the charge modified starch-based biopolymer has a Centrifuge Retention Capacity (CRC) of at least 17 g/g and an Absorbency Under Load (AUL) of at least 7 g/g at 0.7 psi in a saline solution; and wherein the SAP further comprises a polyacrylic synthetic superabsorbent material, wherein the polyacrylic synthetic superabsorbent material and the charge modified starch-based biopolymer are not chemically linked.

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