SE9403174D0 - A Method for the enzymatic treatment of chemical pulp before bleaching - Google Patents
A Method for the enzymatic treatment of chemical pulp before bleachingInfo
- Publication number
- SE9403174D0 SE9403174D0 SE9403174A SE9403174A SE9403174D0 SE 9403174 D0 SE9403174 D0 SE 9403174D0 SE 9403174 A SE9403174 A SE 9403174A SE 9403174 A SE9403174 A SE 9403174A SE 9403174 D0 SE9403174 D0 SE 9403174D0
- Authority
- SE
- Sweden
- Prior art keywords
- pulp
- chemical pulp
- enzymatic treatment
- pulp before
- before bleaching
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 4
- 229920001131 Pulp (paper) Polymers 0.000 title abstract 2
- 238000004061 bleaching Methods 0.000 title abstract 2
- 230000002255 enzymatic effect Effects 0.000 title 1
- 101710121765 Endo-1,4-beta-xylanase Proteins 0.000 abstract 1
- 230000002378 acidificating effect Effects 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 150000001805 chlorine compounds Chemical class 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000003814 drug Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 150000004045 organic chlorine compounds Chemical class 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
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)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP009477U JPH0670208U (ja) | 1993-01-22 | 1993-01-22 | コイル |
| 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 |
|---|---|
| SE9403174D0 true SE9403174D0 (sv) | 1994-09-21 |
| SE9403174L SE9403174L (sv) | 1994-11-16 |
Family
ID=26344222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE9403174A SE9403174L (sv) | 1993-01-22 | 1994-09-21 | Metod för enzymatisk behandling av kemisk massa före blekning |
Country Status (4)
| Country | Link |
|---|---|
| CA (1) | CA2130906A1 (sv) |
| FI (1) | FI944350A (sv) |
| SE (1) | SE9403174L (sv) |
| WO (1) | WO1994017237A1 (sv) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4920504B1 (sv) * | 1969-06-07 | 1974-05-25 | ||
| FR2604198B1 (fr) * | 1986-09-22 | 1989-07-07 | Du Pin Cellulose | Procede de traitement d'une pate papetiere par une solution enzymatique. |
| NO894623L (no) * | 1988-11-23 | 1990-05-25 | Sandoz Ag | Biologisk fremgangsmaate for bleking av pulp. |
| US5179021A (en) * | 1989-02-10 | 1993-01-12 | Gil Inc. (Now Ici Canada Inc.) | Pulp bleaching process comprising oxygen delignification and xylanase enzyme treatment |
-
1994
- 1994-01-21 WO PCT/JP1994/000076 patent/WO1994017237A1/ja active Application Filing
- 1994-01-21 CA CA002130906A patent/CA2130906A1/en not_active Abandoned
- 1994-09-20 FI FI944350A patent/FI944350A/sv unknown
- 1994-09-21 SE SE9403174A patent/SE9403174L/sv not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| SE9403174L (sv) | 1994-11-16 |
| WO1994017237A1 (en) | 1994-08-04 |
| FI944350A0 (sv) | 1994-09-20 |
| FI944350A (sv) | 1994-09-20 |
| CA2130906A1 (en) | 1994-08-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NAV | Patent application has lapsed |
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