DE69008870D1 - Verfahren zum bleichen von lignozellulosehaltigem material mit dioxiranen. - Google Patents

Verfahren zum bleichen von lignozellulosehaltigem material mit dioxiranen.

Info

Publication number
DE69008870D1
DE69008870D1 DE69008870T DE69008870T DE69008870D1 DE 69008870 D1 DE69008870 D1 DE 69008870D1 DE 69008870 T DE69008870 T DE 69008870T DE 69008870 T DE69008870 T DE 69008870T DE 69008870 D1 DE69008870 D1 DE 69008870D1
Authority
DE
Germany
Prior art keywords
dioxiranes
containing material
bleaching lignocellulose
lignocellulose
bleaching
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69008870T
Other languages
English (en)
Other versions
DE69008870T2 (de
Inventor
Chung-Li Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pulp and Paper Research Institute of Canada
Original Assignee
Pulp and Paper Research Institute of Canada
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pulp and Paper Research Institute of Canada filed Critical Pulp and Paper Research Institute of Canada
Publication of DE69008870D1 publication Critical patent/DE69008870D1/de
Application granted granted Critical
Publication of DE69008870T2 publication Critical patent/DE69008870T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Compounds Of Unknown Constitution (AREA)
  • Detergent Compositions (AREA)
DE69008870T 1990-02-16 1990-02-16 Verfahren zum bleichen von lignozellulosehaltigem material mit dioxiranen. Expired - Fee Related DE69008870T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CA1990/000052 WO1991012369A1 (en) 1990-02-16 1990-02-16 Bleaching of lignocellulosic material with dioxiranes

Publications (2)

Publication Number Publication Date
DE69008870D1 true DE69008870D1 (de) 1994-06-16
DE69008870T2 DE69008870T2 (de) 1994-08-18

Family

ID=4172838

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69008870T Expired - Fee Related DE69008870T2 (de) 1990-02-16 1990-02-16 Verfahren zum bleichen von lignozellulosehaltigem material mit dioxiranen.

Country Status (8)

Country Link
EP (1) EP0515362B1 (de)
JP (1) JPH0718113B2 (de)
AU (1) AU641640B2 (de)
BR (1) BR9007993A (de)
DE (1) DE69008870T2 (de)
FI (1) FI102195B (de)
NO (1) NO923145D0 (de)
WO (1) WO1991012369A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69202149T2 (de) * 1991-02-12 1995-11-09 Pulp Paper Res Inst Bleichen von lignocellulosischen Materialien mit aktiviertem Sauerstoff.
IT1251180B (it) * 1991-08-28 1995-05-04 Ausimont Spa Processo per la degradazione della lignina con diossirani
US6706143B1 (en) 1996-03-19 2004-03-16 International Paper Company Minimizing chlorinated organics in pulp bleaching processes
JP2002302888A (ja) * 2001-04-05 2002-10-18 Oji Paper Co Ltd 漂白パルプの製造方法

Also Published As

Publication number Publication date
EP0515362B1 (de) 1994-05-11
FI102195B1 (fi) 1998-10-30
BR9007993A (pt) 1992-10-13
JPH0718113B2 (ja) 1995-03-01
WO1991012369A1 (en) 1991-08-22
FI923644A0 (fi) 1992-08-14
EP0515362A1 (de) 1992-12-02
AU641640B2 (en) 1993-09-30
FI102195B (fi) 1998-10-30
FI923644A (fi) 1992-08-14
DE69008870T2 (de) 1994-08-18
NO923145L (no) 1992-08-12
JPH05504173A (ja) 1993-07-01
NO923145D0 (no) 1992-08-12
AU5168690A (en) 1991-09-03

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee