CA2836895C - Softwood kraft fiber having improved whiteness and brightness and methods of making and using the same - Google Patents

Softwood kraft fiber having improved whiteness and brightness and methods of making and using the same Download PDF

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Publication number
CA2836895C
CA2836895C CA2836895A CA2836895A CA2836895C CA 2836895 C CA2836895 C CA 2836895C CA 2836895 A CA2836895 A CA 2836895A CA 2836895 A CA2836895 A CA 2836895A CA 2836895 C CA2836895 C CA 2836895C
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CA
Canada
Prior art keywords
fiber
cellulose
stage
kraft
bleaching
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Active
Application number
CA2836895A
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English (en)
French (fr)
Other versions
CA2836895A1 (en
Inventor
Arthur J. Nonni
Charles E. Courchene
Philip R. Campbell
Steven C. Dowdle
Joel M. Engle
Christopher M. Slone
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GP Cellulose GmbH
Original Assignee
GP Cellulose GmbH
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.)
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Publication date
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Publication of CA2836895A1 publication Critical patent/CA2836895A1/en
Application granted granted Critical
Publication of CA2836895C publication Critical patent/CA2836895C/en
Active legal-status Critical Current
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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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/123—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with Cl2O
    • 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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process
    • 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • 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
    • D21H11/02—Chemical or chemomechanical or chemothermomechanical pulp
    • D21H11/04—Kraft or sulfate pulp

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Paper (AREA)
CA2836895A 2011-05-23 2012-05-18 Softwood kraft fiber having improved whiteness and brightness and methods of making and using the same Active CA2836895C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US201161489245P 2011-05-23 2011-05-23
US61/489,245 2011-05-23
US201161489594P 2011-05-24 2011-05-24
US61/489,594 2011-05-24
PCT/US2012/038685 WO2012170183A1 (en) 2011-05-23 2012-05-18 Softwood kraft fiber having improved whiteness and brightness and methods of making and using the same

Publications (2)

Publication Number Publication Date
CA2836895A1 CA2836895A1 (en) 2012-12-13
CA2836895C true CA2836895C (en) 2020-03-31

Family

ID=46149020

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2836895A Active CA2836895C (en) 2011-05-23 2012-05-18 Softwood kraft fiber having improved whiteness and brightness and methods of making and using the same

Country Status (15)

Country Link
US (2) US9719208B2 (https=)
EP (1) EP2714987B1 (https=)
JP (3) JP6254078B2 (https=)
KR (1) KR101918470B1 (https=)
CN (1) CN103703184B (https=)
AU (1) AU2012268700B2 (https=)
BR (1) BR112013030060A2 (https=)
CA (1) CA2836895C (https=)
IL (1) IL229518B (https=)
MX (1) MX353539B (https=)
PL (1) PL2714987T3 (https=)
RU (1) RU2608686C2 (https=)
TW (2) TWI618836B (https=)
WO (1) WO2012170183A1 (https=)
ZA (1) ZA201308822B (https=)

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US10138598B2 (en) 2013-03-14 2018-11-27 Gp Cellulose Gmbh Method of making a highly functional, low viscosity kraft fiber using an acidic bleaching sequence and a fiber made by the process
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
BR112015020000A2 (pt) 2013-03-15 2017-07-18 Gp Cellulose Gmbh fibra kraft quimicamente modificada e métodos de fabricação da mesma
US9926385B2 (en) * 2013-08-12 2018-03-27 Shin-Etsu Chemical Co., Ltd. Method for producing water-soluble cellulose ether having low degree of polymerization and method for producing film coating composition comprising same
WO2017066499A1 (en) 2015-10-14 2017-04-20 Gp Cellulose Gmbh Novel cellulose composite materials and methods of making and using the same
EP3383922B1 (en) * 2015-12-01 2022-10-12 GP Cellulose GmbH Open chain modified cellulosic pulps and methods of making and using the same
US9926665B2 (en) * 2016-02-25 2018-03-27 International Paper Company Crosslinked cellulose as precursor in production of high-grade cellulose derivatives and related technology
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WO2019165324A1 (en) 2018-02-23 2019-08-29 Gp Cellulose Gmbh Novel dissolving wood pulps and methods of making and using the same
CN120917200A (zh) * 2023-03-06 2025-11-07 王子控股株式会社 绒毛浆用浆板、绒毛垫和吸收性物品

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US20140318725A1 (en) 2014-10-30
BR112013030060A2 (pt) 2018-01-16
CN103703184A (zh) 2014-04-02
TWI618836B (zh) 2018-03-21
MX2013013645A (es) 2015-05-15
RU2013156863A (ru) 2015-06-27
US20170370048A1 (en) 2017-12-28
JP6239070B2 (ja) 2017-11-29
WO2012170183A1 (en) 2012-12-13
CA2836895A1 (en) 2012-12-13
TWI634247B (zh) 2018-09-01
AU2012268700B2 (en) 2017-02-02
EP2714987B1 (en) 2015-07-29
JP6254078B2 (ja) 2017-12-27
JP2016199844A (ja) 2016-12-01
JP2017141541A (ja) 2017-08-17
EP2714987A1 (en) 2014-04-09
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MX353539B (es) 2018-01-17
US10294613B2 (en) 2019-05-21
TW201805506A (zh) 2018-02-16
KR20140106390A (ko) 2014-09-03
IL229518A0 (en) 2014-01-30
RU2608686C2 (ru) 2017-01-23
AU2012268700A2 (en) 2014-08-21
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US9719208B2 (en) 2017-08-01
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