METHOD OF PREPARING WHITENED CHEMICAL-THERMOMECHANICAL MASS FROM LARCH WOOD Russian patent published in 1997 - IPC

Abstract RU 2074919 C1

FIELD: pulp-and-paper industry. SUBSTANCE: wood chips are steamed at 105-120 C, treated with hydrogen peroxide, sodium hydroxide, complexing agent, and sodium silicate (at weight ratio from 1:10:1:2 to 1:10:0.4:3, respectively) while grinding wood. Finally pulp is whitened. EFFECT: improved procedure. 1 tbl

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RU 2 074 919 C1

Authors

Tol'Man G.Ju.

Zujkov A.A.

Osminin E.N.

Dedik Ju.P.

Kol'Chugin M.V.

Dates

1997-03-10—Published

1995-07-06—Filed