Process for the delignification of lignocellulose materials with

Details Process for the delignification of lignocellulose materials with Process for the delignification of lignocellulose materials with

1981-04-27

1982-09-21

Alvo, Steve

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Treatment with particular chemical

162 90, D21C 302

Patent

active

043505660

ABSTRACT:
A process for delignifying lignocellulosic material with a digestion liquor of nitroanthraquinones and/or dinitroanthraquinones. The process can be carried out in a closed reaction vessel at temperatures of 150.degree.-200.degree..+-. C. for 0.5 to 480 minutes with 0.001 to 10% nitroanthraquinone and/or dinitroanthraquinone by weight of lignocellulosic material.

REFERENCES:
patent: 4036680 (1977-07-01), Holten et al.
patent: 4178861 (1979-12-01), Vanderhoek et al.
Richter, Textbook of Organic Chemistry 2nd Edition, New York, John Wiley & Sons Inc.

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