Process for producing cationic lignin copolymer under aqueous acid conditions

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12234165
APP PUB NO 20210198434A1
SERIAL NO

16492201

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A water-based process was developed for the synthesis of aminated lignin copolymers with high MW, thermal stability and solubility in water over a wide range of p H values. The cationic lignin copolymer described herein comprises: a grafting ratio of (weight of cationic amine compound)/(weight of lignin) of 70 to 200% and a charge density of +1.4-3.0 meq/g. This cationic lignin copolymer can be used as a flocculant in numerous wastewater streams including municipal and industrial systems and sludge dewatering in the pulp & paper, mining and oil industries.

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  • FPINNOVATIONS; LAKEHEAD UNIVERSITY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fatehi, Pedram Thunder Bay, CA 7 19
Jemaa, Naceur Pointe-Claire, CA 10 15
Mahmood, Talat Kirkland, CA 3 0
Paleologou, Michael Beaconsfield, CA 28 166
Price, Jacquelyn Port Burwell, CA 2 1
Wang, Shoujuan Jinan, CN 3 1

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