BR9509253A - Chlorine-free pulley bleaching process - Google Patents

Chlorine-free pulley bleaching process

Info

Publication number
BR9509253A
BR9509253A BR9509253A BR9509253A BR9509253A BR 9509253 A BR9509253 A BR 9509253A BR 9509253 A BR9509253 A BR 9509253A BR 9509253 A BR9509253 A BR 9509253A BR 9509253 A BR9509253 A BR 9509253A
Authority
BR
Brazil
Prior art keywords
chlorine
bleaching process
free pulley
pulley
free
Prior art date
Application number
BR9509253A
Other languages
Portuguese (pt)
Inventor
Ulf Germgard
Kenneth Hafvenstron
Rolf Boman
Jonas Lindquist
Original Assignee
Sunds Defibrator Ind Ab
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 Sunds Defibrator Ind Ab filed Critical Sunds Defibrator Ind Ab
Publication of BR9509253A publication Critical patent/BR9509253A/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
    • 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
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)
BR9509253A 1994-10-07 1995-10-05 Chlorine-free pulley bleaching process BR9509253A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9403396A SE504826C2 (en) 1994-10-07 1994-10-07 Treatment of chemical pulp with complexing agents in the presence of an oxidizing agent
PCT/SE1995/001135 WO1996011298A1 (en) 1994-10-07 1995-10-05 Treatment of chemical pulp with a chelating agent and an oxidizing agent in connection with bleaching

Publications (1)

Publication Number Publication Date
BR9509253A true BR9509253A (en) 1997-10-21

Family

ID=20395512

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9509253A BR9509253A (en) 1994-10-07 1995-10-05 Chlorine-free pulley bleaching process

Country Status (10)

Country Link
EP (1) EP0784720A1 (en)
JP (1) JPH10506965A (en)
CN (1) CN1159842A (en)
AU (1) AU686024B2 (en)
BR (1) BR9509253A (en)
CA (1) CA2199257A1 (en)
FI (1) FI971401A (en)
NO (1) NO971536D0 (en)
SE (1) SE504826C2 (en)
WO (1) WO1996011298A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1010617A3 (en) * 1996-09-11 1998-11-03 Solvay Interox Paper pulp bleaching method
JP2001503109A (en) * 1996-09-11 2001-03-06 ソルヴェイ アンテロックス Pulp bleaching method
BE1010678A3 (en) * 1996-10-11 1998-11-03 Solvay Interox Method for the delignification and bleaching of a chemical paper pulp

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE420430B (en) * 1978-02-17 1981-10-05 Mo Och Domsjoe Ab PROCEDURE FOR WHEATING AND EXTRACTION OF LIGNOCELLULOSALLY MATERIALS WITH PEROXID CONTAINING BLACKS
ATE97179T1 (en) * 1989-06-06 1993-11-15 Eka Nobel Ab PROCESS FOR BLEACHING LIGNOCELLULOSE CONTAINING PULP.

Also Published As

Publication number Publication date
FI971401A0 (en) 1997-04-04
JPH10506965A (en) 1998-07-07
AU686024B2 (en) 1998-01-29
NO971536L (en) 1997-04-04
NO971536D0 (en) 1997-04-04
CN1159842A (en) 1997-09-17
WO1996011298A1 (en) 1996-04-18
SE9403396L (en) 1996-04-08
FI971401A (en) 1997-04-04
SE504826C2 (en) 1997-05-12
EP0784720A1 (en) 1997-07-23
CA2199257A1 (en) 1996-04-18
SE9403396D0 (en) 1994-10-07
AU3712495A (en) 1996-05-02

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Legal Events

Date Code Title Description
FB34 Technical and formal requirements: requirement - article 34 of industrial property law
FA14 Dismissal: dismissal - article 34 of industrial property law
B11T Dismissal of application maintained [chapter 11.20 patent gazette]