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
Application number
ZA9901903A
Other languages
English (en)
Inventor
Eric Chauveheid
Johan Devenyns
Thierry Van Beckhoven
Original Assignee
Solvay
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 Solvay filed Critical Solvay
Publication of ZA991903B publication Critical patent/ZA991903B/xx

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)
ZA9901903A 1998-03-10 1999-03-09 Process for the bleaching and/or delignification of paper pulps. ZA991903B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE9800190A BE1011785A3 (fr) 1998-03-10 1998-03-10 Procede de blanchiment et/ou de delignification de pates a papier chimiques.

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 (xx)
AU (1) AU3330599A (xx)
BE (1) BE1011785A3 (xx)
WO (1) WO1999046441A1 (xx)
ZA (1) ZA991903B (xx)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994028464A1 (en) * 1993-05-20 1994-12-08 The Dow Chemical Company Succinic acid derivative degradable chelants, uses and compositions thereof
SE9501623L (sv) * 1995-05-02 1996-11-03 Sunds Defibrator Ind Ab Blekning av massa
FI115469B (fi) * 1996-02-19 2005-05-13 Kemira Oyj Menetelmä kemiallisen selluloosamateriaalin käsittelemiseksi

Also Published As

Publication number Publication date
EP1062387A1 (fr) 2000-12-27
WO1999046441A1 (fr) 1999-09-16
BE1011785A3 (fr) 2000-01-11
AU3330599A (en) 1999-09-27

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