SE8306411L - SET TO DELIGNIFY CELLULOUS MATERIAL BY OXYGEN - Google Patents

SET TO DELIGNIFY CELLULOUS MATERIAL BY OXYGEN

Info

Publication number
SE8306411L
SE8306411L SE8306411A SE8306411A SE8306411L SE 8306411 L SE8306411 L SE 8306411L SE 8306411 A SE8306411 A SE 8306411A SE 8306411 A SE8306411 A SE 8306411A SE 8306411 L SE8306411 L SE 8306411L
Authority
SE
Sweden
Prior art keywords
oxygen
delignify
cellulous material
cellulous
nitrolignine
Prior art date
Application number
SE8306411A
Other languages
Swedish (sv)
Other versions
SE8306411D0 (en
SE440246B (en
Inventor
T Iversen
J Walding
O S A G Lindeberg
Original Assignee
Svenska Traeforskningsinst
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 Svenska Traeforskningsinst filed Critical Svenska Traeforskningsinst
Priority to SE8306411A priority Critical patent/SE440246B/en
Publication of SE8306411D0 publication Critical patent/SE8306411D0/en
Publication of SE8306411L publication Critical patent/SE8306411L/en
Publication of SE440246B publication Critical patent/SE440246B/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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Paper (AREA)

Abstract

The invention refers to a method of oxygen bleaching for cellulose-bearing material. According to the invention delignification is carried out in the presence of added, separately prepared nitrolignine.
SE8306411A 1983-11-21 1983-11-21 Method of oxygen bleaching for cellulose-bearing material SE440246B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8306411A SE440246B (en) 1983-11-21 1983-11-21 Method of oxygen bleaching for cellulose-bearing material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8306411A SE440246B (en) 1983-11-21 1983-11-21 Method of oxygen bleaching for cellulose-bearing material

Publications (3)

Publication Number Publication Date
SE8306411D0 SE8306411D0 (en) 1983-11-21
SE8306411L true SE8306411L (en) 1985-05-22
SE440246B SE440246B (en) 1985-07-22

Family

ID=20353409

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8306411A SE440246B (en) 1983-11-21 1983-11-21 Method of oxygen bleaching for cellulose-bearing material

Country Status (1)

Country Link
SE (1) SE440246B (en)

Also Published As

Publication number Publication date
SE8306411D0 (en) 1983-11-21
SE440246B (en) 1985-07-22

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Legal Events

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NAV Patent application has lapsed

Ref document number: 8306411-3

Effective date: 19860610