NO863133L - PROCEDURE FOR DELIGNIFICATION OF CELLULOUS SUBSTANCES. - Google Patents

PROCEDURE FOR DELIGNIFICATION OF CELLULOUS SUBSTANCES.

Info

Publication number
NO863133L
NO863133L NO863133A NO863133A NO863133L NO 863133 L NO863133 L NO 863133L NO 863133 A NO863133 A NO 863133A NO 863133 A NO863133 A NO 863133A NO 863133 L NO863133 L NO 863133L
Authority
NO
Norway
Prior art keywords
cellulosic materials
delignification
cellulous
substances
procedure
Prior art date
Application number
NO863133A
Other languages
Norwegian (no)
Other versions
NO168490C (en
NO863133D0 (en
NO168490B (en
Inventor
Josef S Gratzl
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 NO863133D0 publication Critical patent/NO863133D0/en
Publication of NO863133L publication Critical patent/NO863133L/en
Publication of NO168490B publication Critical patent/NO168490B/en
Publication of NO168490C publication Critical patent/NO168490C/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
    • 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)
  • Compositions Of Macromolecular Compounds (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Materials For Medical Uses (AREA)
  • Dental Preparations (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • External Artificial Organs (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Agricultural Chemicals And Associated Chemicals (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.
NO863133A 1985-08-05 1986-08-04 PROCEDURE FOR DELIGNIFICATION OF CELLULOSE SUBSTANCES. NO168490C (en)

Applications Claiming Priority (1)

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

Publications (4)

Publication Number Publication Date
NO863133D0 NO863133D0 (en) 1986-08-04
NO863133L true NO863133L (en) 1987-02-06
NO168490B NO168490B (en) 1991-11-18
NO168490C NO168490C (en) 1992-02-26

Family

ID=25065883

Family Applications (1)

Application Number Title Priority Date Filing Date
NO863133A NO168490C (en) 1985-08-05 1986-08-04 PROCEDURE FOR DELIGNIFICATION OF CELLULOSE 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

Family Cites Families (6)

* 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
SE373896B (en) * 1972-07-05 1975-02-17 Mo Och Domsjoe Ab
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
IN167959B (en) * 1985-08-05 1991-01-12 Interox

Also Published As

Publication number Publication date
FI85726C (en) 1992-05-25
ATE57400T1 (en) 1990-10-15
EP0212329B1 (en) 1990-10-10
CA1311093C (en) 1992-12-08
FI863194A (en) 1987-02-06
ES2000385A6 (en) 1988-02-16
JPS6297992A (en) 1987-05-07
DE3674859D1 (en) 1990-11-15
FI85726B (en) 1992-02-14
BR8603672A (en) 1987-03-10
EP0212329A1 (en) 1987-03-04
PT83118A (en) 1986-09-01
NO168490C (en) 1992-02-26
NO863133D0 (en) 1986-08-04
NO168490B (en) 1991-11-18
PT83118B (en) 1988-10-14
NZ217002A (en) 1988-11-29
YU136986A (en) 1987-10-31
YU45351B (en) 1992-05-28
FI863194A0 (en) 1986-08-05
AU591509B2 (en) 1989-12-07
AU6054486A (en) 1987-02-12
JPH0742670B2 (en) 1995-05-10

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Legal Events

Date Code Title Description
MM1K Lapsed by not paying the annual fees

Free format text: LAPSED IN FEBRUARY 2002