AU591508B2 - Process for the delignification of cellulosic substances - Google Patents

Process for the delignification of cellulosic substances

Info

Publication number
AU591508B2
AU591508B2 AU60543/86A AU6054386A AU591508B2 AU 591508 B2 AU591508 B2 AU 591508B2 AU 60543/86 A AU60543/86 A AU 60543/86A AU 6054386 A AU6054386 A AU 6054386A AU 591508 B2 AU591508 B2 AU 591508B2
Authority
AU
Australia
Prior art keywords
delignification
cellulosic materials
cellulosic
cellulosic substances
treated
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.)
Ceased
Application number
AU60543/86A
Other versions
AU6054386A (en
Inventor
Josef S. Gratzl
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.)
Solvay Chimie SA
Original Assignee
Interox SA
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 Interox SA filed Critical Interox SA
Publication of AU6054386A publication Critical patent/AU6054386A/en
Application granted granted Critical
Publication of AU591508B2 publication Critical patent/AU591508B2/en
Anticipated expiration legal-status Critical
Ceased 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/26—Multistage processes

Landscapes

  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Paper (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • External Artificial Organs (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Organic Insulating Materials (AREA)
  • Dental Preparations (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Materials For Medical Uses (AREA)
  • Cleaning Or Drying Semiconductors (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Detergent Compositions (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

1. Process for the delignification of cellulosic materials characterized in that in a first step the cellulosic materials are treated with an acid under regulated conditions to effect a decontamination of the cellulosic material of the metals which they contain, in a second step the cellulosic materials of the first step are treated with hydrogen peroxyde under alcaline conditions and in a third step the cellulosic materials of the second step are boiled in the presence of sulphite or sulphate.
AU60543/86A 1985-08-05 1986-07-25 Process for the delignification of cellulosic substances Ceased AU591508B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US76272485A 1985-08-05 1985-08-05
US762724 1985-08-05

Publications (2)

Publication Number Publication Date
AU6054386A AU6054386A (en) 1987-02-12
AU591508B2 true AU591508B2 (en) 1989-12-07

Family

ID=25065878

Family Applications (1)

Application Number Title Priority Date Filing Date
AU60543/86A Ceased AU591508B2 (en) 1985-08-05 1986-07-25 Process for the delignification of cellulosic substances

Country Status (14)

Country Link
EP (1) EP0213376B1 (en)
JP (1) JPH0742669B2 (en)
AT (1) ATE57401T1 (en)
AU (1) AU591508B2 (en)
BR (1) BR8603671A (en)
CA (1) CA1282911C (en)
DE (1) DE3674866D1 (en)
ES (1) ES2000831A6 (en)
FI (1) FI85725C (en)
IN (1) IN167959B (en)
NO (1) NO168375C (en)
NZ (1) NZ217001A (en)
PT (1) PT83117B (en)
YU (1) YU45352B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU591509B2 (en) * 1985-08-05 1989-12-07 Interox Societe Anonyme Process for the delignification of cellulosic substances
FI122654B (en) * 1997-12-08 2012-05-15 Ovivo Luxembourg Sarl Process for making paper cellulose pulp
BRPI0810975B1 (en) * 2007-05-23 2018-12-26 Alberta Res Council Method for Removing Hemicellulose from Cellulosic Fibers Using Ammonia and Hydrogen Peroxide Solution

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1434232A (en) * 1972-07-05 1976-05-05 Mo Och Domsjoe Ab Method of producing cellulose pulp by means of oxygen gas delignification
AU6054486A (en) * 1985-08-05 1987-02-12 Interox Societe Anonyme Process for the delignification of cellulosic substances

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE873649C (en) * 1944-08-25 1953-04-16 Degussa Process for the production of unbleached cellulose with a high white content
SE380298B (en) * 1974-03-14 1975-11-03 Mo PROCEDURE FOR DELIGNIFICATION BY ACID-ALKALI TREATMENT OF LIGNOCELLUOSA-CONTAINING MATERIAL
US4486267A (en) * 1983-11-14 1984-12-04 Mead Corporation Chemithermomechanical pulping process employing separate alkali and sulfite treatments

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1434232A (en) * 1972-07-05 1976-05-05 Mo Och Domsjoe Ab Method of producing cellulose pulp by means of oxygen gas delignification
AU6054486A (en) * 1985-08-05 1987-02-12 Interox Societe Anonyme Process for the delignification of cellulosic substances

Also Published As

Publication number Publication date
ATE57401T1 (en) 1990-10-15
YU137086A (en) 1987-10-31
NO168375C (en) 1992-02-12
NZ217001A (en) 1989-01-27
JPH0742669B2 (en) 1995-05-10
FI863193A (en) 1987-02-06
JPS6297991A (en) 1987-05-07
FI85725C (en) 1992-05-25
PT83117A (en) 1986-09-01
YU45352B (en) 1992-05-28
FI85725B (en) 1992-02-14
AU6054386A (en) 1987-02-12
CA1282911C (en) 1991-04-16
BR8603671A (en) 1987-03-10
NO863132D0 (en) 1986-08-04
ES2000831A6 (en) 1988-03-16
PT83117B (en) 1988-10-14
NO863132L (en) 1987-02-06
FI863193A0 (en) 1986-08-05
EP0213376B1 (en) 1990-10-10
EP0213376A1 (en) 1987-03-11
IN167959B (en) 1991-01-12
NO168375B (en) 1991-11-04
DE3674866D1 (en) 1990-11-15

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AU591508B2 (en) Process for the delignification of cellulosic substances
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Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired