SE8602065D0 - PROCEDURE FOR PEROXIDE BLACKING OF CELLULOSE-CONTAINING Masses - Google Patents
PROCEDURE FOR PEROXIDE BLACKING OF CELLULOSE-CONTAINING MassesInfo
- Publication number
- SE8602065D0 SE8602065D0 SE8602065A SE8602065A SE8602065D0 SE 8602065 D0 SE8602065 D0 SE 8602065D0 SE 8602065 A SE8602065 A SE 8602065A SE 8602065 A SE8602065 A SE 8602065A SE 8602065 D0 SE8602065 D0 SE 8602065D0
- Authority
- SE
- Sweden
- Prior art keywords
- peroxide
- blacking
- cellulose
- procedure
- containing masses
- Prior art date
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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
Lignocellulosic pulps of high efficiency, higher than 70 %, optionally pretreated or having a chelating agent added to them, are bleached with peroxide in the presence of magnesium oxide as the only base and/or of a magnesium oxide precursor.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO852330A NO852330L (en) | 1985-06-10 | 1985-06-10 | PROCEDURES FOR PEROXIDE BLACKING OF CELLULOSE-CONTAINING Masses. |
Publications (2)
Publication Number | Publication Date |
---|---|
SE8602065D0 true SE8602065D0 (en) | 1986-05-06 |
SE8602065L SE8602065L (en) | 1986-12-11 |
Family
ID=19888331
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8602065A SE8602065L (en) | 1985-06-10 | 1986-05-06 | PROCEDURES FOR PEROXID WHEATING OF CELLULOSA-MADE MASS |
Country Status (5)
Country | Link |
---|---|
DE (1) | DE3617942A1 (en) |
FI (1) | FI862437A (en) |
FR (1) | FR2583078A1 (en) |
NO (1) | NO852330L (en) |
SE (1) | SE8602065L (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4400954B4 (en) * | 1994-01-14 | 2007-03-01 | Stefan Kürzeder | Process for increasing the brightness of bleaching wood pulp with hydrogen peroxide |
AUPN352095A0 (en) * | 1995-06-13 | 1995-07-06 | Ici Australia Operations Proprietary Limited | Peroxide bleaching of pulp |
AU2001256024A1 (en) * | 2000-05-04 | 2001-11-12 | University Of New Brunswick | Peroxide bleaching of wood pulp |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5545806A (en) * | 1978-09-21 | 1980-03-31 | Oji Paper Co | Peroxide bleaching method of wood pulp |
JPS5922832B2 (en) * | 1978-12-09 | 1984-05-29 | 王子製紙株式会社 | Method for producing peroxide bleached pulp |
DE3428352A1 (en) * | 1984-08-01 | 1986-02-13 | Degussa Ag, 6000 Frankfurt | METHOD FOR DELIGNIFICATION AND BLEACHING OF CELLULAS |
-
1985
- 1985-06-10 NO NO852330A patent/NO852330L/en unknown
-
1986
- 1986-05-06 SE SE8602065A patent/SE8602065L/en not_active Application Discontinuation
- 1986-05-28 DE DE19863617942 patent/DE3617942A1/en not_active Ceased
- 1986-06-06 FI FI862437A patent/FI862437A/en not_active Application Discontinuation
- 1986-06-09 FR FR8608272A patent/FR2583078A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
FR2583078A1 (en) | 1986-12-12 |
FI862437A (en) | 1986-12-11 |
DE3617942A1 (en) | 1986-12-11 |
SE8602065L (en) | 1986-12-11 |
NO852330L (en) | 1986-12-11 |
FI862437A0 (en) | 1986-06-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |
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