METHOD OF BLEACHED CELLULOSE PRODUCING Russian patent published in 1995 - IPC

Abstract RU 2027812 C1

FIELD: cellulose industry. SUBSTANCE: after alkaline boiling cellulose is washed up to concentration of residual active alkaline in mass 0.3-3.0 g/l as Na2O units and the presence of inhibiting reagent of phenylpropane derivative at concentration 0.1-0.5% of absolutely dry cellulose mass. Then cellulose is treated with atmospheric and/or ionized air which is fed under pressure 0.5-5.0 ati following by multistep whitening. EFFECT: improved method of cellulose production. 7 tbl

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RU 2 027 812 C1

Authors

Belodubrovskij R.B.

Kosheleva V.D.

Kremljakov Ju.A.

Gugnin Ju.A.

Borilkevich B.E.

Tikhonov G.P.

Semiletko S.V.

Kuusk T.F.

Dobrynin D.N.

Dates

1995-01-27Published

1992-09-14Filed