Patent ID: 9175443
Filing Date: 2015-11-03
Classification: C08B,C08H,D21C,D21H

Abstract:
1. A method comprising: irradiating a lignocellulosic or cellulosic material in air with multiple doses of irradiation, to achieve a total dosage of from about 10 Mrad to about 100 Mrad of radiation, each dose being delivered at a dose rate of at least 0.5 Mrad/second using an electron beam operating in continuous wave mode, to generate carboxylic acid groups by reaction of the irradiated feedstock with the air and thereby provide an irradiated lignocellulosic or cellulosic material having a larger number of carboxylic acid groups than the cellulosic or lignocellulosic material from which the irradiated material was obtained.