公开(公告)号：CA2943663A1

公开(公告)日：2015-10-01

申请号：CA2943663

申请日：2015-03-13

Applicant: BASF SE

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

IPC: D21C9/10 ,  D21B1/04 ,  D21B1/06 ,  D21B1/12

Abstract: The invention relates to a method for producing bleached wood fibre material, comprising the following steps: a) delaminating wood particles, that are large and optionally pre-treated with chemicals and/or water, into modified wood particles; b) grinding the modified wood particles produced in step a) in one or a number of refiners; c) and optionally treating the material produced in step b) with oxidative or reductive bleaching agents. The method is characterised in that step a) and/or step b) are carried out in the presence of a composition Z, said composition Z containing one or a number of the following components (Z1) to (Z3): a salt of dithionous acid H2S2O4 (Z1); a compound (Z2) that generates the dithionous acid or a derivate of the dithionous acid; a salt of sulphurous acid (sulphite) plus sodium tetrahydridoborate (Z3); and optionally additives (Z4).

公开(公告)号：AU2015238642B2

公开(公告)日：2018-07-12

申请号：AU2015238642

申请日：2015-03-13

Applicant: BASF SE

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

IPC: D21C9/10 ,  D21B1/04 ,  D21B1/06 ,  D21B1/12

Abstract: The invention relates to a method for producing bleached wood fibre material, comprising the following steps: a) delaminating wood particles, that are large and optionally pre-treated with chemicals and/or water, into modified wood particles; b) grinding the modified wood particles produced in step a) in one or a number of refiners; c) and optionally treating the material produced in step b) with oxidative or reductive bleaching agents. The method is characterised in that step a) and/or step b) are carried out in the presence of a composition Z, said composition Z containing one or a number of the following components (Z1) to (Z3): a salt of dithionous acid H

公开(公告)号：AU2015238642A1

公开(公告)日：2016-10-06

申请号：AU2015238642

申请日：2015-03-13

Applicant: BASF SE

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

IPC: D21C9/10 ,  D21B1/04 ,  D21B1/06 ,  D21B1/12

Abstract: The invention relates to a method for producing bleached wood fibre material, comprising the following steps: a) delaminating wood particles, that are large and optionally pre-treated with chemicals and/or water, into modified wood particles; b) grinding the modified wood particles produced in step a) in one or a number of refiners; c) and optionally treating the material produced in step b) with oxidative or reductive bleaching agents. The method is characterised in that step a) and/or step b) are carried out in the presence of a composition Z, said composition Z containing one or a number of the following components (Z1) to (Z3): a salt of dithionous acid H

公开(公告)号：SI3122931T1

公开(公告)日：2020-02-28

申请号：SI201531045

申请日：2015-03-13

Applicant: BASF SE

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

IPC: D21C9/00 ,  D21B1/00

公开(公告)号：CA2943663C

公开(公告)日：2022-10-04

申请号：CA2943663

申请日：2015-03-13

Applicant: BASF SE

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

IPC: D21C9/10 ,  D21B1/04 ,  D21B1/06 ,  D21B1/12

Abstract: The invention relates to a method for producing bleached wood fibre material, comprising the following steps: a) delaminating wood particles, that are large and optionally pre-treated with chemicals and/or water, into modified wood particles; b) grinding the modified wood particles produced in step a) in one or a number of refiners; c) and optionally treating the material produced in step b) with oxidative or reductive bleaching agents. The method is characterised in that step a) and/or step b) are carried out in the presence of a composition Z, said composition Z containing one or a number of the following components (Z1) to (Z3): a salt of dithionous acid H2S2O4 (Z1); a compound (Z2) that generates the dithionous acid or a derivate of the dithionous acid; a salt of sulphurous acid (sulphite) plus sodium tetrahydridoborate (Z3); and optionally additives (Z4).

公开(公告)号：CL2016002398A1

公开(公告)日：2017-01-20

申请号：CL2016002398

申请日：2016-09-23

Applicant: BASF SE

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

IPC: D21B1/04 ,  D21B1/06 ,  D21C9/10