CA2173824A1 - Acide ethylenediaminetriacetique et ses sels, agents de chelation dans le blanchiment des pates - Google Patents

Acide ethylenediaminetriacetique et ses sels, agents de chelation dans le blanchiment des pates

Info

Publication number
CA2173824A1
CA2173824A1 CA002173824A CA2173824A CA2173824A1 CA 2173824 A1 CA2173824 A1 CA 2173824A1 CA 002173824 A CA002173824 A CA 002173824A CA 2173824 A CA2173824 A CA 2173824A CA 2173824 A1 CA2173824 A1 CA 2173824A1
Authority
CA
Canada
Prior art keywords
mls
pulp
salt
salts
ethylenediaminetriacetic acid
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
CA002173824A
Other languages
English (en)
Inventor
Brian A. Parker
Roland J. Lemery
David T. Johns
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hampshire Chemical Corp
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 CA2173824A1 publication Critical patent/CA2173824A1/fr
Abandoned legal-status Critical Current

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
CA002173824A 1995-04-27 1996-04-10 Acide ethylenediaminetriacetique et ses sels, agents de chelation dans le blanchiment des pates Abandoned CA2173824A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US43107895A 1995-04-27 1995-04-27
US08/431,078 1995-04-27

Publications (1)

Publication Number Publication Date
CA2173824A1 true CA2173824A1 (fr) 1996-10-28

Family

ID=23710353

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002173824A Abandoned CA2173824A1 (fr) 1995-04-27 1996-04-10 Acide ethylenediaminetriacetique et ses sels, agents de chelation dans le blanchiment des pates

Country Status (7)

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

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI104572B (fi) 1996-05-30 2000-02-29 Kemira Chemicals Oy Menetelmä kemiallisen massan valkaisemiseksi
FI105932B (fi) * 1996-05-30 2000-10-31 Kemira Chemicals Oy Menetelmä korkeasaanto- tai kierrätysmassan valkaisemiseksi
FI105214B (fi) * 1997-11-13 2000-06-30 Kemira Chemicals Oy Tehostettu kemiallisen massan valkaisumenetelmä
WO2009154898A1 (fr) 2008-06-20 2009-12-23 International Paper Company Composition et feuille d'impression présentant des propriétés optiques améliorées
WO2010056854A1 (fr) 2008-11-12 2010-05-20 Irix Pharmaceuticals Esters d’acide n-alcanoyl-n,n',n'-alkylènediamine trialcanoïque

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
DE69606346T2 (de) 2000-10-19
EP0740015A1 (fr) 1996-10-30
EP0740015B1 (fr) 2000-01-26
AU693011B2 (en) 1998-06-18
DE69606346D1 (de) 2000-03-02
AU5066896A (en) 1996-11-07
ES2144168T3 (es) 2000-06-01
BR9602035A (pt) 1998-10-06
ZA963060B (en) 1996-07-30

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Legal Events

Date Code Title Description
FZDE Dead