ES2193085T3 - Procedimiento para mejorar la opacidad de la pasta mecanica utilizando peroxiacidos alifaticos y uso de peroxiacidos para mejorar la opacidad. - Google Patents

Procedimiento para mejorar la opacidad de la pasta mecanica utilizando peroxiacidos alifaticos y uso de peroxiacidos para mejorar la opacidad.

Info

Publication number
ES2193085T3
ES2193085T3 ES00936926T ES00936926T ES2193085T3 ES 2193085 T3 ES2193085 T3 ES 2193085T3 ES 00936926 T ES00936926 T ES 00936926T ES 00936926 T ES00936926 T ES 00936926T ES 2193085 T3 ES2193085 T3 ES 2193085T3
Authority
ES
Spain
Prior art keywords
opacity
peroxiacides
improve
procedure
alifatic
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
ES00936926T
Other languages
English (en)
Inventor
Jukka Jakara
Aarto Paren
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.)
Kemira Chemicals Oy
Original Assignee
Kemira Chemicals Oy
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 Kemira Chemicals Oy filed Critical Kemira Chemicals Oy
Application granted granted Critical
Publication of ES2193085T3 publication Critical patent/ES2193085T3/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
    • D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Abstract

Procedimiento para tratar pasta mecánica, caracterizado porque se añade a la pasta un ácido percarboxílico alifático, en una cantidad de 0, 5 - 5 kg/ton de pasta, para modificar la opacidad.
ES00936926T 1999-06-15 2000-06-14 Procedimiento para mejorar la opacidad de la pasta mecanica utilizando peroxiacidos alifaticos y uso de peroxiacidos para mejorar la opacidad. Expired - Lifetime ES2193085T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI991366A FI107545B (fi) 1999-06-15 1999-06-15 Menetelmä mekaanisten massojen käsittelemiseksi

Publications (1)

Publication Number Publication Date
ES2193085T3 true ES2193085T3 (es) 2003-11-01

Family

ID=8554886

Family Applications (1)

Application Number Title Priority Date Filing Date
ES00936926T Expired - Lifetime ES2193085T3 (es) 1999-06-15 2000-06-14 Procedimiento para mejorar la opacidad de la pasta mecanica utilizando peroxiacidos alifaticos y uso de peroxiacidos para mejorar la opacidad.

Country Status (9)

Country Link
EP (1) EP1244851B1 (es)
AT (1) ATE239828T1 (es)
AU (1) AU5224500A (es)
CA (1) CA2374673A1 (es)
DE (1) DE60002613T2 (es)
ES (1) ES2193085T3 (es)
FI (1) FI107545B (es)
NO (1) NO20016083L (es)
WO (1) WO2000077301A1 (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI111745B (fi) 2001-12-19 2003-09-15 Kemira Chemicals Oy Parannettu kartonginvalmistusmenetelmä
GB2391011A (en) * 2002-07-19 2004-01-28 Crosmill Ltd Bleaching cellulose suspensions
WO2010014085A1 (en) 2008-07-30 2010-02-04 Micro Motion, Inc. Method and apparatus for pulse width modulation signal processing
FI127444B (en) * 2015-05-27 2018-06-15 Kemira Oyj A method for reducing the viscosity of a pulp in the manufacture of soluble cellulose
FI127996B (en) * 2016-07-01 2019-07-15 Kemira Oyj A process for treating pulp
WO2019048698A1 (en) * 2017-09-11 2019-03-14 Kemira Oyj PROCESS FOR TREATING PULP

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1119546A (en) * 1965-03-01 1968-07-10 Paper Chemistry Inst Improved method of treating fibrous material
US5589032A (en) * 1992-09-21 1996-12-31 North Carolina State University Process for preparing a bleaching liquor containing percarboxylic acid and caro's acid
WO1997022749A1 (en) * 1995-12-19 1997-06-26 Kvaerner Hymac Inc. Process for treating refiner pulp

Also Published As

Publication number Publication date
ATE239828T1 (de) 2003-05-15
FI991366A0 (fi) 1999-06-15
WO2000077301A1 (en) 2000-12-21
EP1244851B1 (en) 2003-05-07
FI107545B (fi) 2001-08-31
NO20016083D0 (no) 2001-12-13
CA2374673A1 (en) 2000-12-21
DE60002613D1 (de) 2003-06-12
DE60002613T2 (de) 2003-11-27
NO20016083L (no) 2002-02-14
FI991366L (fi) 2000-12-16
AU5224500A (en) 2001-01-02
EP1244851A1 (en) 2002-10-02

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