FI944350A - Process for enzymatic treatment of chemical pulp before bleaching - Google Patents

Process for enzymatic treatment of chemical pulp before bleaching Download PDF

Info

Publication number
FI944350A
FI944350A FI944350A FI944350A FI944350A FI 944350 A FI944350 A FI 944350A FI 944350 A FI944350 A FI 944350A FI 944350 A FI944350 A FI 944350A FI 944350 A FI944350 A FI 944350A
Authority
FI
Finland
Prior art keywords
enzymatic treatment
chemical pulp
pulp before
before bleaching
bleaching
Prior art date
Application number
FI944350A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI944350A0 (en
Inventor
Haruhiko Kawabata
Shunji Ohmori
Mitsuhiro Matsuhashi
Akira Matsuura
Toshihide Sakai
Koichi Umeda
Original Assignee
Mitsubishi Paper Mills Ltd
Amano Pharma Co Ltd
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
Priority claimed from JP009477U external-priority patent/JPH0670208U/en
Application filed by Mitsubishi Paper Mills Ltd, Amano Pharma Co Ltd filed Critical Mitsubishi Paper Mills Ltd
Publication of FI944350A0 publication Critical patent/FI944350A0/en
Publication of FI944350A publication Critical patent/FI944350A/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
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
    • 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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Microbiology (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
FI944350A 1993-01-22 1994-09-20 Process for enzymatic treatment of chemical pulp before bleaching FI944350A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP009477U JPH0670208U (en) 1993-01-22 1993-01-22 coil
JP21296693 1993-08-27
PCT/JP1994/000076 WO1994017237A1 (en) 1993-01-22 1994-01-21 Pre-bleaching treatment method using enzyme for chemical pulp

Publications (2)

Publication Number Publication Date
FI944350A0 FI944350A0 (en) 1994-09-20
FI944350A true FI944350A (en) 1994-09-20

Family

ID=26344222

Family Applications (1)

Application Number Title Priority Date Filing Date
FI944350A FI944350A (en) 1993-01-22 1994-09-20 Process for enzymatic treatment of chemical pulp before bleaching

Country Status (4)

Country Link
CA (1) CA2130906A1 (en)
FI (1) FI944350A (en)
SE (1) SE9403174L (en)
WO (1) WO1994017237A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4920504B1 (en) * 1969-06-07 1974-05-25
FR2604198B1 (en) * 1986-09-22 1989-07-07 Du Pin Cellulose PROCESS FOR TREATING A PAPER PULP WITH AN ENZYMATIC SOLUTION.
NO894623L (en) * 1988-11-23 1990-05-25 Sandoz Ag BIOLOGICAL PROCEDURE FOR PULP WHITENING.
US5179021A (en) * 1989-02-10 1993-01-12 Gil Inc. (Now Ici Canada Inc.) Pulp bleaching process comprising oxygen delignification and xylanase enzyme treatment

Also Published As

Publication number Publication date
SE9403174L (en) 1994-11-16
SE9403174D0 (en) 1994-09-21
WO1994017237A1 (en) 1994-08-04
FI944350A0 (en) 1994-09-20
CA2130906A1 (en) 1994-08-04

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