ZA991903B - Process for the bleaching and/or delignification of paper pulps. - Google Patents
Process for the bleaching and/or delignification of paper pulps.Info
- Publication number
- ZA991903B ZA991903B ZA9901903A ZA991903A ZA991903B ZA 991903 B ZA991903 B ZA 991903B ZA 9901903 A ZA9901903 A ZA 9901903A ZA 991903 A ZA991903 A ZA 991903A ZA 991903 B ZA991903 B ZA 991903B
- Authority
- ZA
- South Africa
- Prior art keywords
- delignification
- bleaching
- paper pulps
- pulps
- paper
- 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
- D21C9/1026—Other features in bleaching processes
- D21C9/1042—Use of chelating agents
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE9800190A BE1011785A3 (en) | 1998-03-10 | 1998-03-10 | Process for laundering and / or pasta delignification paper chemicals. |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA991903B true ZA991903B (en) | 2000-10-11 |
Family
ID=3891148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA9901903A ZA991903B (en) | 1998-03-10 | 1999-03-09 | Process for the bleaching and/or delignification of paper pulps. |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1062387A1 (en) |
AU (1) | AU3330599A (en) |
BE (1) | BE1011785A3 (en) |
WO (1) | WO1999046441A1 (en) |
ZA (1) | ZA991903B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1811080A1 (en) * | 2006-01-24 | 2007-07-25 | Solvay SA | Process for the bleaching of mechanical paper pulp |
WO2009154898A1 (en) | 2008-06-20 | 2009-12-23 | International Paper Company | Composition and recording sheet with improved optical properties |
GB0901207D0 (en) * | 2009-01-26 | 2009-03-11 | Innospec Ltd | Chelating agents and methods relating thereto |
EP2534296A1 (en) | 2010-02-12 | 2012-12-19 | Dequest AG | Method for pulp bleaching |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2160701A1 (en) * | 1993-05-20 | 1994-12-08 | David Alan Wilson | Succinic acid derivative degradable chelants, uses and compositions thereof |
SE9501623L (en) * | 1995-05-02 | 1996-11-03 | Sunds Defibrator Ind Ab | Bleaching of pulp |
FI115469B (en) * | 1996-02-19 | 2005-05-13 | Kemira Oyj | Process for the treatment of chemical cellulose material |
-
1998
- 1998-03-10 BE BE9800190A patent/BE1011785A3/en not_active IP Right Cessation
-
1999
- 1999-03-06 WO PCT/EP1999/001612 patent/WO1999046441A1/en not_active Application Discontinuation
- 1999-03-06 EP EP99914514A patent/EP1062387A1/en not_active Withdrawn
- 1999-03-06 AU AU33305/99A patent/AU3330599A/en not_active Abandoned
- 1999-03-09 ZA ZA9901903A patent/ZA991903B/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP1062387A1 (en) | 2000-12-27 |
BE1011785A3 (en) | 2000-01-11 |
WO1999046441A1 (en) | 1999-09-16 |
AU3330599A (en) | 1999-09-27 |
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