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AU1797397A - Process for the treatment of chemical pulp - Google Patents

Process for the treatment of chemical pulp

Info

Publication number
AU1797397A
AU1797397A AU17973/97A AU1797397A AU1797397A AU 1797397 A AU1797397 A AU 1797397A AU 17973/97 A AU17973/97 A AU 17973/97A AU 1797397 A AU1797397 A AU 1797397A AU 1797397 A AU1797397 A AU 1797397A
Authority
AU
Australia
Prior art keywords
pulp
treatment
chemical pulp
delignification
chelating agent
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
AU17973/97A
Inventor
Reijo Aksela
Aarto Paren
Ilkka Renvall
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8545485&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=AU1797397(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Kemira Chemicals Oy filed Critical Kemira Chemicals Oy
Publication of AU1797397A publication Critical patent/AU1797397A/en
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
    • 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)
  • Treatment Of Fiber Materials (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

A process for the bleaching or delignification of chemical pulp, wherein, before bleaching or delignification with an oxygen chemical, the pulp is pretreated with a chelating agent in order to eliminate the adverse effects of any heavy metals present in the pulp. The chelating agent used consists of compounds according to Formula (I), where n is 1-3, m is 0-3, p is 1-3, R1, R2, R3 and R4 are H, Na, K, Ca or Mg, R5 and R6 are H, CH2OH, CH2CH2OH or CH2O(CH2CH2O)1-10CH2CH2OH.
AU17973/97A 1996-02-19 1997-02-19 Process for the treatment of chemical pulp Abandoned AU1797397A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI960756A FI115469B (en) 1996-02-19 1996-02-19 Process for the treatment of chemical cellulose material
FI960756 1996-02-19
PCT/FI1997/000106 WO1997030208A1 (en) 1996-02-19 1997-02-19 Process for the treatment of chemical pulp

Publications (1)

Publication Number Publication Date
AU1797397A true AU1797397A (en) 1997-09-02

Family

ID=8545485

Family Applications (1)

Application Number Title Priority Date Filing Date
AU17973/97A Abandoned AU1797397A (en) 1996-02-19 1997-02-19 Process for the treatment of chemical pulp

Country Status (6)

Country Link
EP (1) EP0882151B1 (en)
AT (1) ATE252176T1 (en)
AU (1) AU1797397A (en)
DE (1) DE69725558T2 (en)
FI (1) FI115469B (en)
WO (1) WO1997030208A1 (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19630278A1 (en) * 1996-07-26 1998-01-29 Basf Ag Complexing agent for pulp and pulp bleaching, paper production and deinking of waste paper
CA2310278A1 (en) * 1997-11-25 1999-06-03 Amylum Belgium N.V. Improvements to the bleaching process for chemical pulp and intermediate pulp dispersions
KR100260833B1 (en) * 1997-12-27 2000-07-01 차동천 Method of manufacturing high yield mechanical pulp
FI106258B (en) 1998-03-09 2000-12-29 Kemira Chemicals Oy Processes for the preparation of an N-bis- [2- (1,2-dicarboxyethoxy) ethyl] amine derivative and products obtained by the methods and uses thereof
BE1011785A3 (en) * 1998-03-10 2000-01-11 Solvay Process for laundering and / or pasta delignification paper chemicals.
BE1011784A3 (en) * 1998-03-10 2000-01-11 Solvay Bleaching pulp process.
DE69912128T2 (en) * 1998-04-17 2004-06-17 Alberta Research Council, Inc., Edmonton METHOD FOR PRODUCING LIGNOCELLULOSE-CONTAINING PULP FROM NON-WOODY MATERIAL
FI991241L (en) * 1999-06-01 2000-12-02 Aga Ab Bleaching of lignin and process for making paper
GB2391011A (en) * 2002-07-19 2004-01-28 Crosmill Ltd Bleaching cellulose suspensions
CA2728278C (en) 2008-06-20 2016-06-28 Zheng Tan Composition and recording sheet with improved optical properties
GB0901207D0 (en) * 2009-01-26 2009-03-11 Innospec Ltd Chelating agents and methods relating thereto
US9512237B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Method for inhibiting the growth of microbes with a modified cellulose fiber
US9512563B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Surface treated modified cellulose from chemical kraft fiber and methods of making and using same
EP3636830A1 (en) 2009-05-28 2020-04-15 GP Cellulose GmbH Modified cellulose from chemical kraft fiber and methods of making and using the same
US9511167B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Modified cellulose from chemical kraft fiber and methods of making and using the same
SE534885C2 (en) * 2009-11-11 2012-01-31 Metso Paper Inc Process for producing a pulp from lignocellulosic material containing at least 0.5% SiO2
CN105121735B (en) * 2013-03-14 2018-06-29 Gp 纤维素股份有限公司 With acid bleaching sequence manufacture high functionalization's low-viscosity sulfur silicate fiber method and thus technique manufacture fiber
EP2971338A2 (en) 2013-03-15 2016-01-20 GP Cellulose GmbH A low viscosity kraft fiber having an enhanced carboxyl content and methods of making and using the same
WO2015138335A1 (en) * 2014-03-12 2015-09-17 Gp Cellulose Gmbh A low viscosity kraft fiber having an enhanced carboxyl content and methods of making and using the same
WO2018093697A1 (en) 2016-11-16 2018-05-24 Gp Cellulose Gmbh Modified cellulose from chemical fiber and methods of making and using the same
CZ309643B6 (en) * 2021-07-21 2023-06-07 Univerzita Pardubice Magnesium salts of aspartic acid derivatives and their use as hydrogen peroxide stabilizers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5362412A (en) * 1991-04-17 1994-11-08 Hampshire Chemical Corp. Biodegradable bleach stabilizers for detergents
GB9216408D0 (en) * 1992-08-01 1992-09-16 Procter & Gamble Stabilized bleaching compositions
DE4340043A1 (en) * 1993-11-24 1995-06-01 Henkel Kgaa Use of nitrogen-containing complexing agents in wood pulp bleaching
DE4445931A1 (en) * 1994-12-22 1996-06-27 Basf Ag Use of hydroxyalkylaminocarboxylic acids as complexing agents

Also Published As

Publication number Publication date
FI960756A0 (en) 1996-02-19
ATE252176T1 (en) 2003-11-15
FI115469B (en) 2005-05-13
DE69725558T2 (en) 2004-08-05
DE69725558D1 (en) 2003-11-20
WO1997030208A1 (en) 1997-08-21
EP0882151A1 (en) 1998-12-09
FI960756L (en) 1997-08-20
EP0882151B1 (en) 2003-10-15

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