NZ217002A - Delignification using acid and hydrogen peroxide - Google Patents

Delignification using acid and hydrogen peroxide

Info

Publication number
NZ217002A
NZ217002A NZ217002A NZ21700286A NZ217002A NZ 217002 A NZ217002 A NZ 217002A NZ 217002 A NZ217002 A NZ 217002A NZ 21700286 A NZ21700286 A NZ 21700286A NZ 217002 A NZ217002 A NZ 217002A
Authority
NZ
New Zealand
Prior art keywords
cellulosic materials
delignification
acid
hydrogen peroxide
treated
Prior art date
Application number
NZ217002A
Inventor
J S Gratzl
Original Assignee
Interox
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 filed Critical Interox
Publication of NZ217002A publication Critical patent/NZ217002A/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)
  • Dental Preparations (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Materials For Medical Uses (AREA)
  • External Artificial Organs (AREA)
  • Ultra Sonic Daignosis Equipment (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.
NZ217002A 1985-08-05 1986-07-28 Delignification using acid and hydrogen peroxide NZ217002A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
NZ217002A true NZ217002A (en) 1988-11-29

Family

ID=25065883

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ217002A NZ217002A (en) 1985-08-05 1986-07-28 Delignification using acid and hydrogen peroxide

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
ES2000385A6 (en) 1988-02-16
YU136986A (en) 1987-10-31
EP0212329B1 (en) 1990-10-10
NO168490C (en) 1992-02-26
YU45351B (en) 1992-05-28
NO863133D0 (en) 1986-08-04
JPS6297992A (en) 1987-05-07
PT83118A (en) 1986-09-01
FI85726C (en) 1992-05-25
FI863194A (en) 1987-02-06
BR8603672A (en) 1987-03-10
FI863194A0 (en) 1986-08-05
AU6054486A (en) 1987-02-12
FI85726B (en) 1992-02-14
CA1311093C (en) 1992-12-08
EP0212329A1 (en) 1987-03-04
AU591509B2 (en) 1989-12-07
DE3674859D1 (en) 1990-11-15
ATE57400T1 (en) 1990-10-15
PT83118B (en) 1988-10-14
JPH0742670B2 (en) 1995-05-10
NO168490B (en) 1991-11-18
NO863133L (en) 1987-02-06

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