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BR9602035A - Process to inhibit the decomposition of hydrogen peroxide in aqueous solution containing transition metal ions and process for pretreating wood pulp before bleaching - Google Patents

Process to inhibit the decomposition of hydrogen peroxide in aqueous solution containing transition metal ions and process for pretreating wood pulp before bleaching

Info

Publication number
BR9602035A
BR9602035A BR9602035A BR9602035A BR9602035A BR 9602035 A BR9602035 A BR 9602035A BR 9602035 A BR9602035 A BR 9602035A BR 9602035 A BR9602035 A BR 9602035A BR 9602035 A BR9602035 A BR 9602035A
Authority
BR
Brazil
Prior art keywords
inhibit
decomposition
aqueous solution
hydrogen peroxide
solution containing
Prior art date
Application number
BR9602035A
Other languages
Portuguese (pt)
Inventor
Brian A Parker
Roland J Lemery
David T Johns
Original Assignee
Hampshire Chemical Corp
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 Hampshire Chemical Corp filed Critical Hampshire Chemical Corp
Publication of BR9602035A publication Critical patent/BR9602035A/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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)
BR9602035A 1995-04-27 1996-04-24 Process to inhibit the decomposition of hydrogen peroxide in aqueous solution containing transition metal ions and process for pretreating wood pulp before bleaching BR9602035A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US43107895A 1995-04-27 1995-04-27

Publications (1)

Publication Number Publication Date
BR9602035A true BR9602035A (en) 1998-10-06

Family

ID=23710353

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9602035A BR9602035A (en) 1995-04-27 1996-04-24 Process to inhibit the decomposition of hydrogen peroxide in aqueous solution containing transition metal ions and process for pretreating wood pulp before bleaching

Country Status (7)

Country Link
EP (1) EP0740015B1 (en)
AU (1) AU693011B2 (en)
BR (1) BR9602035A (en)
CA (1) CA2173824A1 (en)
DE (1) DE69606346T2 (en)
ES (1) ES2144168T3 (en)
ZA (1) ZA963060B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI105932B (en) * 1996-05-30 2000-10-31 Kemira Chemicals Oy Method for bleaching high-exchange or recycled fiber pulp
FI104572B (en) * 1996-05-30 2000-02-29 Kemira Chemicals Oy Chemical pulp bleaching process
FI105214B (en) 1997-11-13 2000-06-30 Kemira Chemicals Oy Efficient process for bleaching a chemical pulp
CN103088699B (en) 2008-06-20 2015-04-22 国际纸业公司 Composition And Recording Sheet With Improved Optical Properties
US8258334B2 (en) 2008-11-12 2012-09-04 Irix Pharmaceuticals, Inc. N-alkanoyl-N,N′,N′-alkylenediamine trialkanoic acid esters

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8620222D0 (en) * 1986-08-20 1986-10-01 Abitibi Price Inc Peroxide bleaching
US4732650A (en) * 1986-09-15 1988-03-22 The Dow Chemical Company Bleaching of cellulosic pulps using hydrogen peroxide
US5250728A (en) * 1991-12-12 1993-10-05 Hampshire Chemical Corp. Preparation of ethylenediaminetriacetic acid

Also Published As

Publication number Publication date
AU5066896A (en) 1996-11-07
DE69606346T2 (en) 2000-10-19
DE69606346D1 (en) 2000-03-02
EP0740015A1 (en) 1996-10-30
ES2144168T3 (en) 2000-06-01
AU693011B2 (en) 1998-06-18
CA2173824A1 (en) 1996-10-28
ZA963060B (en) 1996-07-30
EP0740015B1 (en) 2000-01-26

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Legal Events

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