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AU591509B2 - Process for the delignification of cellulosic substances - Google Patents

Process for the delignification of cellulosic substances

Info

Publication number
AU591509B2
AU591509B2 AU60544/86A AU6054486A AU591509B2 AU 591509 B2 AU591509 B2 AU 591509B2 AU 60544/86 A AU60544/86 A AU 60544/86A AU 6054486 A AU6054486 A AU 6054486A AU 591509 B2 AU591509 B2 AU 591509B2
Authority
AU
Australia
Prior art keywords
cellulosic materials
delignification
cellulosic substances
treated
cellulosic
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
AU60544/86A
Other versions
AU6054486A (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 AU6054486A publication Critical patent/AU6054486A/en
Application granted granted Critical
Publication of AU591509B2 publication Critical patent/AU591509B2/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)
  • Detergent Compositions (AREA)
  • Materials For Medical Uses (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Dental Preparations (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • External Artificial Organs (AREA)
  • Ultra Sonic Daignosis Equipment (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 materials 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 soda.
AU60544/86A 1985-08-05 1986-07-25 Process for the delignification of cellulosic substances Ceased AU591509B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US76272685A 1985-08-05 1985-08-05
US762726 1985-08-05

Publications (2)

Publication Number Publication Date
AU6054486A AU6054486A (en) 1987-02-12
AU591509B2 true AU591509B2 (en) 1989-12-07

Family

ID=25065883

Family Applications (1)

Application Number Title Priority Date Filing Date
AU60544/86A Ceased AU591509B2 (en) 1985-08-05 1986-07-25 Process for the delignification of cellulosic substances

Country Status (13)

Country Link
EP (1) EP0212329B1 (en)
JP (1) JPH0742670B2 (en)
AT (1) ATE57400T1 (en)
AU (1) AU591509B2 (en)
BR (1) BR8603672A (en)
CA (1) CA1311093C (en)
DE (1) DE3674859D1 (en)
ES (1) ES2000385A6 (en)
FI (1) FI85726C (en)
NO (1) NO168490C (en)
NZ (1) NZ217002A (en)
PT (1) PT83118B (en)
YU (1) YU45351B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IN167959B (en) * 1985-08-05 1991-01-12 Interox

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
AU6054386A (en) * 1985-08-05 1987-02-12 Interox Societe Anonyme Process for the delignification of cellulosic substances

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1474276A (en) * 1965-03-19 1967-03-24 Electro Chimie Soc D Improvements in the manufacture of pulp
SE380298B (en) * 1974-03-14 1975-11-03 Mo PROCEDURE FOR DELIGNIFICATION BY ACID-ALKALI TREATMENT OF LIGNOCELLUOSA-CONTAINING MATERIAL
SE7612248L (en) * 1976-11-03 1978-05-04 Mo Och Domsjoe Ab BOILING OF LIGNOCELLULOSE-MATERIALS
SU821614A1 (en) * 1979-06-19 1981-04-15 Белорусский Технологический Институт Им.C.M.Кирова Method of obtaining pulp-containing semiproduct

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
AU6054386A (en) * 1985-08-05 1987-02-12 Interox Societe Anonyme Process for the delignification of cellulosic substances

Also Published As

Publication number Publication date
NO863133D0 (en) 1986-08-04
YU45351B (en) 1992-05-28
YU136986A (en) 1987-10-31
NO168490C (en) 1992-02-26
PT83118B (en) 1988-10-14
ATE57400T1 (en) 1990-10-15
CA1311093C (en) 1992-12-08
EP0212329A1 (en) 1987-03-04
NZ217002A (en) 1988-11-29
PT83118A (en) 1986-09-01
FI863194A0 (en) 1986-08-05
EP0212329B1 (en) 1990-10-10
NO863133L (en) 1987-02-06
FI85726C (en) 1992-05-25
DE3674859D1 (en) 1990-11-15
ES2000385A6 (en) 1988-02-16
FI85726B (en) 1992-02-14
FI863194L (en) 1987-02-06
AU6054486A (en) 1987-02-12
BR8603672A (en) 1987-03-10
JPH0742670B2 (en) 1995-05-10
NO168490B (en) 1991-11-18
JPS6297992A (en) 1987-05-07

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Legal Events

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