ES2144168T3 - Acido etilendiamintriacetico y sales del mismo como agente quelante en el blanqueo de pastas papeleras. - Google Patents

Acido etilendiamintriacetico y sales del mismo como agente quelante en el blanqueo de pastas papeleras.

Info

Publication number
ES2144168T3
ES2144168T3 ES96106367T ES96106367T ES2144168T3 ES 2144168 T3 ES2144168 T3 ES 2144168T3 ES 96106367 T ES96106367 T ES 96106367T ES 96106367 T ES96106367 T ES 96106367T ES 2144168 T3 ES2144168 T3 ES 2144168T3
Authority
ES
Spain
Prior art keywords
acid
bleaching
ethylendiamintriacetic
salts
same
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.)
Expired - Lifetime
Application number
ES96106367T
Other languages
English (en)
Spanish (es)
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
Application granted granted Critical
Publication of ES2144168T3 publication Critical patent/ES2144168T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)
ES96106367T 1995-04-27 1996-04-23 Acido etilendiamintriacetico y sales del mismo como agente quelante en el blanqueo de pastas papeleras. Expired - Lifetime ES2144168T3 (es)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
ES2144168T3 true ES2144168T3 (es) 2000-06-01

Family

ID=23710353

Family Applications (1)

Application Number Title Priority Date Filing Date
ES96106367T Expired - Lifetime ES2144168T3 (es) 1995-04-27 1996-04-23 Acido etilendiamintriacetico y sales del mismo como agente quelante en el blanqueo de pastas papeleras.

Country Status (7)

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

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
CN102076911B (zh) 2008-06-20 2013-03-13 国际纸业公司 具有改良光学特性的组合物和记录片材
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
DE69606346D1 (de) 2000-03-02
CA2173824A1 (en) 1996-10-28
EP0740015B1 (de) 2000-01-26
EP0740015A1 (de) 1996-10-30
AU693011B2 (en) 1998-06-18
DE69606346T2 (de) 2000-10-19
ZA963060B (en) 1996-07-30
AU5066896A (en) 1996-11-07
BR9602035A (pt) 1998-10-06

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