ES2193085T3 - PROCEDURE TO IMPROVE THE OPACITY OF THE MECHANICAL PASTE USING ALIFATIC PEROXIACIDES AND USE OF PEROXIACIDES TO IMPROVE THE OPACITY. - Google Patents

PROCEDURE TO IMPROVE THE OPACITY OF THE MECHANICAL PASTE USING ALIFATIC PEROXIACIDES AND USE OF PEROXIACIDES TO IMPROVE THE OPACITY.

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
improve
peroxiacides
alifatic
procedure
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
Spanish (es)
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/en
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)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The invention relates to a method for treating mechanical pulp so that aliphatic percarboxylic acid in the amount of 0.5 - 5 kg/ton of pulp is added to the pulp to improve the opacity.
ES00936926T 1999-06-15 2000-06-14 PROCEDURE TO IMPROVE THE OPACITY OF THE MECHANICAL PASTE USING ALIFATIC PEROXIACIDES AND USE OF PEROXIACIDES TO IMPROVE THE OPACITY. Expired - Lifetime ES2193085T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI991366A FI107545B (en) 1999-06-15 1999-06-15 Process for processing mechanical masses

Publications (1)

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

Family

ID=8554886

Family Applications (1)

Application Number Title Priority Date Filing Date
ES00936926T Expired - Lifetime ES2193085T3 (en) 1999-06-15 2000-06-14 PROCEDURE TO IMPROVE THE OPACITY OF THE MECHANICAL PASTE USING ALIFATIC PEROXIACIDES AND USE OF PEROXIACIDES TO IMPROVE THE OPACITY.

Country Status (9)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI111745B (en) 2001-12-19 2003-09-15 Kemira Chemicals Oy Improved board manufacturing process
GB2391011A (en) * 2002-07-19 2004-01-28 Crosmill Ltd Bleaching cellulose suspensions
KR101231131B1 (en) 2008-07-30 2013-02-07 마이크로 모우션, 인코포레이티드 Method and apparatus for pulse width modulation signal processing
FI127444B (en) * 2015-05-27 2018-06-15 Kemira Oyj Method for reducing pulp viscosity in production of dissolving pulp
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
DE60002613T2 (en) 2003-11-27
FI991366A (en) 2000-12-16
FI107545B (en) 2001-08-31
ATE239828T1 (en) 2003-05-15
EP1244851A1 (en) 2002-10-02
AU5224500A (en) 2001-01-02
FI991366A0 (en) 1999-06-15
CA2374673A1 (en) 2000-12-21
DE60002613D1 (en) 2003-06-12
WO2000077301A1 (en) 2000-12-21
NO20016083D0 (en) 2001-12-13
EP1244851B1 (en) 2003-05-07
NO20016083L (en) 2002-02-14

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