CROSSLINKED CELLULOSE AS PRECURSOR IN PRODUCTION OF HIGH-GRADE CELLULOSE DERIVATIVES AND RELATED TECHNOLOGY

Number of patents in Portfolio can not be more than 2000

United States of America

APP PUB NO 20200002891A1
SERIAL NO

16570086

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Abstract

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A pulp in accordance with a particular embodiment includes crosslinked cellulose fibers. The pulp can have high brightness, reactivity, and intrinsic viscosity. The pulp, therefore, can be well suited for use as a precursor in the production of low-color, high-viscosity cellulose derivatives. A method in accordance with a particular embodiment of the present technology includes forming a pulp from a cellulosic feedstock, bleaching the pulp, crosslinking cellulose fibers within the pulp while the pulp has a high consistency, and drying the pulp. The bleaching process can reduce a lignin content of the pulp to less than or equal to 0.09% by oven-dried weight of the crosslinked cellulose fibers. Crosslinking the cellulose fibers can include exposing the cellulose fibers to a glycidyl ether crosslinker having two or more glycidyl groups and a molecular weight per epoxide within a range from 140 to 175.

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Patent Owner(s)

Patent OwnerAddress
INTERNATIONAL PAPER COMPANY6400 POPLAR AVENUE MEMPHIS TN 38197

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Luo, Mengkui Auburn, US 83 3084

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