ZA963060B - Ethylenediaminetriacetic acid and salts thereof as chelating agent in pulp bleaching - Google Patents

Ethylenediaminetriacetic acid and salts thereof as chelating agent in pulp bleaching

Info

Publication number
ZA963060B
ZA963060B ZA963060A ZA963060A ZA963060B ZA 963060 B ZA963060 B ZA 963060B ZA 963060 A ZA963060 A ZA 963060A ZA 963060 A ZA963060 A ZA 963060A ZA 963060 B ZA963060 B ZA 963060B
Authority
ZA
South Africa
Prior art keywords
salts
chelating agent
pulp bleaching
ethylenediaminetriacetic acid
ethylenediaminetriacetic
Prior art date
Application number
ZA963060A
Other languages
English (en)
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 ZA963060B publication Critical patent/ZA963060B/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
    • D21C9/16—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)
ZA963060A 1995-04-27 1996-04-17 Ethylenediaminetriacetic acid and salts thereof as chelating agent in pulp bleaching ZA963060B (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
ZA963060B true ZA963060B (en) 1996-07-30

Family

ID=23710353

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA963060A ZA963060B (en) 1995-04-27 1996-04-17 Ethylenediaminetriacetic acid and salts thereof as chelating agent in pulp bleaching

Country Status (7)

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

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI105932B (fi) * 1996-05-30 2000-10-31 Kemira Chemicals Oy Menetelmä korkeasaanto- tai kierrätysmassan valkaisemiseksi
FI104572B (fi) * 1996-05-30 2000-02-29 Kemira Chemicals Oy Menetelmä kemiallisen massan valkaisemiseksi
FI105214B (fi) 1997-11-13 2000-06-30 Kemira Chemicals Oy Tehostettu kemiallisen massan valkaisumenetelmä
BRPI0909931B1 (pt) 2008-06-20 2020-04-07 Int Paper Co composição para uso em fabricação de papel, método para fabricar uma folha de gravação, método para formar uma imagem e folha de gravação
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
EP0740015A1 (en) 1996-10-30
AU5066896A (en) 1996-11-07
EP0740015B1 (en) 2000-01-26
DE69606346T2 (de) 2000-10-19
ES2144168T3 (es) 2000-06-01
AU693011B2 (en) 1998-06-18
BR9602035A (pt) 1998-10-06
CA2173824A1 (en) 1996-10-28
DE69606346D1 (de) 2000-03-02

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