Method of digesting lignocellulosic material

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United States of America Patent

PATENT NO 9803317
SERIAL NO

14377610

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Abstract

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A method of digesting lignocellulosic material includes the steps of providing the lignocellulosic material and a caustic composition having a pH of at least about 10. The caustic composition includes water, an alkaline- or alkaline earth-metal hydroxide, and up to about 1 percent by weight based on a total weight of the composition of a branched digestion additive. The branched digestion additive has the structure: wherein A is at least one alkyleneoxy group and each alkyleneoxy group has from 2 to 4 carbon atoms, n is 0 or 1, B is a branched aliphatic hydrocarbon group having from 8 to 15 carbon atoms, X is H or B-0-(A)m, and each m is independently an average value from 3 to 30, and wherein the caustic composition has a Draves Wetting Time of less than 100 seconds as determined using ASTM D2281.

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Patent Owner(s)

Patent OwnerAddress
BASF CORPORATION100 PARK AVENUE FLORHAM PARK NJ 07932

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Durocher, David Westland, US 5 73
Friel, Thomas C Saint Johns, US 3 12
Zack, Kenneth L Wyandotte, US 24 150

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