公开(公告)号：ZA201607131B

公开(公告)日：2018-08-30

申请号：ZA201607131

申请日：2016-10-17

Applicant: BASF SE

Inventor： ERREN STEFAN ,  SCHÖNHABER DIETER ,  SCHACHTL MARTIN ,  OSIPOV PAVEL VASSILIEVITCH

Abstract: In a process for producing bleached mechanical woodpulp, said process comprising the steps ofa) delaminating comparatively large particles of wood, which have optionally been pretreated with chemicals and/or water, into modified particles of wood,b) grinding the modified particles of wood from a) in one or more refiners,c) optionally treating the stalk obtained in step b) with oxidative or reductive bleaching agents, a composition Z is present during step a) and/or step b), said composition Z comprising one or more of the following components (Z1) to (Z3): a salt of dithionous acid H2S2O4(Z1), a dithionous acid or dithionous acid derivative generator compound (Z2), a salt of sulfurous acid (sulfite) plus sodium tetraborohydride (Z3) and also optionally additives (Z4).

公开(公告)号：MX2015007586A

公开(公告)日：2016-05-05

申请号：MX2015007586

申请日：2013-12-02

Applicant: BASF SE

Inventor： ERREN STEFAN ,  SCHÖNHABER DIETER ,  SCHACHTL MARTIN ,  FISCHER STEFFEN ,  BÄURICH CHRISTIAN

IPC: D21C3/00 ,  B27N3/00 ,  D21C3/02 ,  D21C3/04 ,  D21C3/22 ,  D21C9/10 ,  D21C11/08

Abstract: Un método de producción de celulosa a partir de material lignocelulósico por digestión de sulfito o digestión de sulfato en presencia de una sal de ácido ditionoso comprende el uso de la sal de ácido ditionoso en una cantidad del 0,1 al 4,0% en peso en base a la cantidad de material lignocelulósico secado en horno.

公开(公告)号：AU2013357649A1

公开(公告)日：2015-06-11

申请号：AU2013357649

申请日：2013-12-02

Applicant: UNIV DRESDEN TECH ,  BASF SE

Inventor： ERREN STEFAN ,  SCHÖNHABER DIETER ,  SCHACHTL MARTIN ,  FISCHER STEFFEN ,  BÄURICH CHRISTIAN

IPC: D21C3/00 ,  B27N3/00 ,  D21C3/02 ,  D21C3/04 ,  D21C3/22 ,  D21C9/10 ,  D21C11/08

Abstract: The invention relates to a method for producing cellulose from material containing lignocellulose by means of sulfite decomposition or sulfate decomposition in the presence of a salt of dithionous acid, characterized in that the salt of dithionous acid is used in an amount in the range of 0.1 to 4.0 wt% with respect to the amount of kiln-dry material containing lignocellulose.

公开(公告)号：CA2892725A1

公开(公告)日：2014-06-19

申请号：CA2892725

申请日：2013-12-02

Applicant: BASF SE ,  UNIV DRESDEN TECH

Inventor： ERREN STEFAN ,  SCHÖNHABER DIETER ,  SCHACHTL MARTIN ,  FISCHER STEFFEN ,  BÄURICH CHRISTIAN

IPC: D21C3/00 ,  B27N3/00 ,  D21C3/02 ,  D21C3/04 ,  D21C3/22 ,  D21C9/10 ,  D21C11/08

Abstract: The invention relates to a method for producing cellulose from material containing lignocellulose by means of sulfite decomposition or sulfate decomposition in the presence of a salt of dithionous acid, characterized in that the salt of dithionous acid is used in an amount in the range of 0.1 to 4.0 wt% with respect to the amount of kiln-dry material containing lignocellulose.