CA2062325A1 - Process for the bleaching of cellulose in aliphatic monocarbonic acids - Google Patents

Process for the bleaching of cellulose in aliphatic monocarbonic acids

Info

Publication number
CA2062325A1
CA2062325A1 CA002062325A CA2062325A CA2062325A1 CA 2062325 A1 CA2062325 A1 CA 2062325A1 CA 002062325 A CA002062325 A CA 002062325A CA 2062325 A CA2062325 A CA 2062325A CA 2062325 A1 CA2062325 A1 CA 2062325A1
Authority
CA
Canada
Prior art keywords
cellulose
bleaching
acetic acid
ozone
acid
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
CA002062325A
Other languages
English (en)
French (fr)
Inventor
Alex Berg
Wim Janssen
Stefan Balle
Rudolf G. Kunz
Wolfdieter Klein
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.)
Acetocell GmbH and Co KG
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2062325A1 publication Critical patent/CA2062325A1/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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/003—Pulping cellulose-containing materials with organic 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
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
    • 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
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone

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)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • External Artificial Organs (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
CA002062325A 1991-03-08 1992-03-05 Process for the bleaching of cellulose in aliphatic monocarbonic acids Abandoned CA2062325A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4107356A DE4107356C1 (enrdf_load_stackoverflow) 1991-03-08 1991-03-08
DEP4107356.8 1991-03-08

Publications (1)

Publication Number Publication Date
CA2062325A1 true CA2062325A1 (en) 1992-09-09

Family

ID=6426710

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002062325A Abandoned CA2062325A1 (en) 1991-03-08 1992-03-05 Process for the bleaching of cellulose in aliphatic monocarbonic acids

Country Status (6)

Country Link
EP (1) EP0503303B1 (enrdf_load_stackoverflow)
AT (1) ATE131886T1 (enrdf_load_stackoverflow)
CA (1) CA2062325A1 (enrdf_load_stackoverflow)
DE (2) DE4107356C1 (enrdf_load_stackoverflow)
FI (1) FI920832A7 (enrdf_load_stackoverflow)
NO (1) NO920829L (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2391011A (en) * 2002-07-19 2004-01-28 Crosmill Ltd Bleaching cellulose suspensions

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2183643A (en) * 1936-05-05 1939-12-19 Manufacture of cellulose
GB579669A (en) * 1943-11-05 1946-08-12 Stanley Charles Bate Improvements in or relating to the production of cellulose
US3553076A (en) * 1968-01-22 1971-01-05 Weyerhaeuser Co Non-catalytic process for the production of cellulose from lignocellulosic materials using acetic acid
DE3118384C1 (de) * 1981-05-09 1982-11-11 Mannesmann AG, 4000 Düsseldorf Verfahren zum Bleichen von chemisch hergestelltem Zellstoff mit Ozon
DE3445132A1 (de) * 1984-12-11 1986-06-12 Nimz, Horst H., Prof.Dr., 2050 Hamburg Holzaufschluss mit essigsaeure
EP0325891A1 (de) * 1988-01-25 1989-08-02 Kunz Holding Gmbh & Co. Kg Verfahren zur Gewinnung von gebleichtem Zellstoff

Also Published As

Publication number Publication date
NO920829L (no) 1992-09-09
DE59204715D1 (de) 1996-02-01
EP0503303A1 (de) 1992-09-16
ATE131886T1 (de) 1996-01-15
FI920832A0 (fi) 1992-02-25
EP0503303B1 (de) 1995-12-20
FI920832L (fi) 1992-09-09
DE4107356C1 (enrdf_load_stackoverflow) 1992-11-05
FI920832A7 (fi) 1992-09-09
NO920829D0 (no) 1992-03-03

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Legal Events

Date Code Title Description
FZDE Discontinued