Cotton recycling

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United States of America Patent

PATENT NO 11970820
APP PUB NO 20230062813A1
SERIAL NO

17981769

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Abstract

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Cellulose materials and methods of making the cellulose materials are described herein. The method can include contacting a cotton fabric with an oxidizing system to obtain an oxidized cotton material and processing the oxidized cotton material to form the cellulose material. The oxidizing system can include an aqueous mixture of a N-oxyl compound and a hypochlorite compound. During oxidation, the p11 of the aqueous mixture can be maintained at from 8.5 to 11. Cellulose products can be formed from the cellulose materials. For example, the cellulose products can be used to form a packaging material, a biomedical device or implant, a drug delivery material, a fiber, a textile material, a template for electronic components, or a separation membrane. Methods of making the cellulose product include dissolving or suspending an active ingredient in a medium comprising the cellulose material.

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Patent Owner(s)

Patent OwnerAddress
BOARD OF REGENTS THE UNIVERSITY OF TEXAS SYSTEM210 WEST 7TH STREET AUSTIN TX 78701

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Jonathan Y Austin, US 20 94

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