PULP PREPARATION METHOD Russian patent published in 1999 - IPC

Abstract RU 2135665 C1

FIELD: pulp-and-paper industry. SUBSTANCE: pulp is prepared from starting lignocellulose by cooking in alkaline aqueous cooking liquor containing one or more low-boiling organic solvents, one or more redox catalysts, and, additionally, an alkaline sulfite derivative. EFFECT: increased yield of industrial-purity cellulose and enabled creation of closed water circulation system. 24 cl

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RU 2 135 665 C1

Authors

Khans-Ludvig Shubert

Majk Miridit

Mikhel' Khajnrikh Zinner

Otar Kordzakhia

Dates

1999-08-27—Published

1997-01-31—Filed