Delignification of lignocellulosic material with a soda pulping

Details Delignification of lignocellulosic material with a soda pulping Delignification of lignocellulosic material with a soda pulping

1976-12-14

1977-07-19

Corbin, Arthur L.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Gas, vapor or mist contact

8111, 162 72, 162 76, 162 77, 162 90, D21C 320, D21C 910

Patent

active

040366804

ABSTRACT:
Delignification of lignocellulosic material, such as wood, straw or bagasse, with a soda pulping liquor containing a diketo hydroanthracene selected from the unsubstituted and lower alkyl-substituted Diels Alder adducts of naphthoquinone and benzoquinone and a nitro aromatic compound selected from mono and di-nitrobenzenes and the amino, carboxy, hydroxy and methyl derivatives of said nitrobenzenes.

REFERENCES:
patent: 2538457 (1951-01-01), Hudson
patent: 4012280 (1977-03-01), Holton

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