GB1253234A - - Google Patents

Info

Publication number
GB1253234A
GB1253234A GB5057368A GB1253234DA GB1253234A GB 1253234 A GB1253234 A GB 1253234A GB 5057368 A GB5057368 A GB 5057368A GB 1253234D A GB1253234D A GB 1253234DA GB 1253234 A GB1253234 A GB 1253234A
Authority
GB
United Kingdom
Prior art keywords
bleaching
washing
pulp
chlorine
sodium hypochlorite
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
Application number
GB5057368A
Other languages
English (en)
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
Priority claimed from DE19681803453 external-priority patent/DE1803453A1/de
Application filed filed Critical
Publication of GB1253234A publication Critical patent/GB1253234A/en
Expired 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
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
GB5057368A 1968-10-16 1968-10-24 Expired GB1253234A (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19681803453 DE1803453A1 (de) 1968-10-16 1968-10-16 Verfahren zur Gewinnung von Cellulose aus Bagasse fuer die Herstellung von Fasern und Faeden
GB5057368 1968-10-24

Publications (1)

Publication Number Publication Date
GB1253234A true GB1253234A (no) 1971-11-10

Family

ID=32963170

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5057368A Expired GB1253234A (no) 1968-10-16 1968-10-24

Country Status (1)

Country Link
GB (1) GB1253234A (no)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118223A (en) * 1982-03-23 1983-10-26 Mahindra Kumar Makhija Pulp manufacture
EP1402092A1 (en) * 2001-04-24 2004-03-31 Weyerhaeuser Company Sawdust alkaline pulp having low average degree of polymerization values and method of producing the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118223A (en) * 1982-03-23 1983-10-26 Mahindra Kumar Makhija Pulp manufacture
US6861023B2 (en) 1996-08-23 2005-03-01 Weyerhaeuser Company Process for making lyocell fiber from sawdust pulp
US7090744B2 (en) 1996-08-23 2006-08-15 Weyerhaeuser Company Process for making composition for conversion to lyocell fiber from sawdust
EP1402092A1 (en) * 2001-04-24 2004-03-31 Weyerhaeuser Company Sawdust alkaline pulp having low average degree of polymerization values and method of producing the same
EP1402092A4 (en) * 2001-04-24 2004-08-04 Weyerhaeuser Co ALKALINE CUTTER FROM SAW MILL WITH A SMALL MEDIUM POLYMERIZATION LEVEL AND METHOD FOR THE PRODUCTION THEREOF

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees