PL296122A1 - Method of selectively delignifying paper pulp by a chemical process - Google Patents

Method of selectively delignifying paper pulp by a chemical process

Info

Publication number
PL296122A1
PL296122A1 PL1992296122A PL29612292A PL296122A1 PL 296122 A1 PL296122 A1 PL 296122A1 PL 1992296122 A PL1992296122 A PL 1992296122A PL 29612292 A PL29612292 A PL 29612292A PL 296122 A1 PL296122 A1 PL 296122A1
Authority
PL
Poland
Prior art keywords
paper pulp
chemical process
delignifying
selectively
pulp
Prior art date
Application number
PL1992296122A
Other versions
PL171990B1 (en
Inventor
Roy T Hill
Original Assignee
Interox America
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27118364&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=PL296122(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Interox America filed Critical Interox America
Publication of PL296122A1 publication Critical patent/PL296122A1/en
Publication of PL171990B1 publication Critical patent/PL171990B1/en

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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids
    • 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
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • External Artificial Organs (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A process for improving the selectivity of delignification of a chemical paper pulp, in which the pulp is treated with an aqueous solution of an organic peroxy acid at 2 - 47 degrees C., followed by a water wash and a supplementary stage of alkaline extraction in the presence of hydrogen peroxide.
PL92296122A 1991-10-04 1992-10-01 Method of selectively delignifying paper pulp by a chemical process PL171990B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US77085991A 1991-10-04 1991-10-04
US94283892A 1992-09-10 1992-09-10

Publications (2)

Publication Number Publication Date
PL296122A1 true PL296122A1 (en) 1993-06-28
PL171990B1 PL171990B1 (en) 1997-07-31

Family

ID=27118364

Family Applications (1)

Application Number Title Priority Date Filing Date
PL92296122A PL171990B1 (en) 1991-10-04 1992-10-01 Method of selectively delignifying paper pulp by a chemical process

Country Status (9)

Country Link
EP (2) EP0844328A3 (en)
JP (1) JPH05195467A (en)
AT (1) ATE168149T1 (en)
AU (1) AU660326B2 (en)
DE (1) DE69226143T2 (en)
ES (1) ES2120984T3 (en)
FI (1) FI924448A (en)
NZ (1) NZ244592A (en)
PL (1) PL171990B1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2269191A (en) * 1992-07-29 1994-02-02 Solvay Interox Ltd Method of treating aqueous process liquors
US6007678A (en) * 1992-11-27 1999-12-28 Eka Nobel Ab Process for delignification of lignocellulose-containing pulp with an organic peracid or salts thereof
ES2096441T3 (en) * 1992-11-27 1997-03-01 Eka Chemicals Ab PROCEDURE TO DE-LIGNIFY PASTA CONTAINING LIGNOCELLULOSE.
CA2149649C (en) * 1992-11-27 2000-09-19 Magnus Linsten Process for bleaching of lignocellulose-containing pulp
DE19516151A1 (en) 1995-05-03 1996-11-07 Sven Siegle Process for the production of a pulp from cellulosic material, the pulp itself and its use
EP0794245B1 (en) * 1996-03-04 2003-07-09 The Procter & Gamble Company Laundry pretreatment process and bleaching compositions

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1014536A (en) * 1910-05-24 1912-01-09 Minosaku Takahashi Vessel-closure.
FR1014536A (en) * 1940-04-01 1952-08-18 Du Pont Wood pulp bleaching improvements
SE420430B (en) * 1978-02-17 1981-10-05 Mo Och Domsjoe Ab PROCEDURE FOR WHEATING AND EXTRACTION OF LIGNOCELLULOSALLY MATERIALS WITH PEROXID CONTAINING BLACKS
DE3005947B1 (en) * 1980-02-16 1981-01-29 Degussa Process for bleaching pulp using organic peracid
US4793898A (en) * 1985-02-22 1988-12-27 Oy Keskuslaboratorio - Centrallaboratorium Ab Process for bleaching organic peroxyacid cooked material with an alkaline solution of hydrogen peroxide

Also Published As

Publication number Publication date
EP0844328A3 (en) 1998-07-15
DE69226143T2 (en) 1999-02-25
ES2120984T3 (en) 1998-11-16
DE69226143D1 (en) 1998-08-13
JPH05195467A (en) 1993-08-03
AU2538292A (en) 1993-04-22
FI924448A0 (en) 1992-10-02
EP0535741A1 (en) 1993-04-07
AU660326B2 (en) 1995-06-22
EP0844328A2 (en) 1998-05-27
NZ244592A (en) 1994-02-25
PL171990B1 (en) 1997-07-31
EP0535741B1 (en) 1998-07-08
ATE168149T1 (en) 1998-07-15
FI924448A (en) 1993-04-05

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