AT311169B - Process for delignifying cellulosic materials - Google Patents

Process for delignifying cellulosic materials

Info

Publication number
AT311169B
AT311169B AT178371A AT178371A AT311169B AT 311169 B AT311169 B AT 311169B AT 178371 A AT178371 A AT 178371A AT 178371 A AT178371 A AT 178371A AT 311169 B AT311169 B AT 311169B
Authority
AT
Austria
Prior art keywords
cellulosic materials
delignifying
delignifying cellulosic
materials
cellulosic
Prior art date
Application number
AT178371A
Other languages
German (de)
Inventor
Oe Wenzl F
Original Assignee
Mo Och Domsjoe Ab
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 Mo Och Domsjoe Ab filed Critical Mo Och Domsjoe Ab
Application granted granted Critical
Publication of AT311169B publication Critical patent/AT311169B/en

Links

Classifications

    • 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
    • C08B1/08—Alkali cellulose
    • 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
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes

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)
AT178371A 1970-03-02 1971-03-02 Process for delignifying cellulosic materials AT311169B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE02732/70A SE353749B (en) 1970-03-02 1970-03-02

Publications (1)

Publication Number Publication Date
AT311169B true AT311169B (en) 1973-11-12

Family

ID=20260555

Family Applications (1)

Application Number Title Priority Date Filing Date
AT178371A AT311169B (en) 1970-03-02 1971-03-02 Process for delignifying cellulosic materials

Country Status (10)

Country Link
US (1) US3701712A (en)
JP (1) JPS5022601B1 (en)
AT (1) AT311169B (en)
BR (1) BR7101287D0 (en)
DE (1) DE2109542C3 (en)
FI (1) FI55531C (en)
FR (1) FR2084031A5 (en)
NO (1) NO133594C (en)
SE (1) SE353749B (en)
ZA (1) ZA711271B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5027081B2 (en) * 1971-11-10 1975-09-05
US4045279A (en) * 1972-01-17 1977-08-30 Toyo Pulp Co., Ltd. Process for the manufacture of pulp using sodium carbonate and oxygen
US4089737A (en) * 1974-02-18 1978-05-16 Toyo Pulp Company, Ltd. Delignification of cellulosic material with an alkaline aqueous medium containing oxygen dissolved therein
SE393138B (en) * 1974-03-14 1977-05-02 Mo Och Domsjoe Ab PROCEDURE FOR BLEACHING CELLULOSA WITH AN ACID CONTAINING GAS IN THE PRESENCE OF SODIUM BICARBONATE
US4087318A (en) * 1974-03-14 1978-05-02 Mo Och Domsjo Aktiebolag Oxygen-alkali delignification of lignocellulosic material in the presence of a manganese compound
US4338158A (en) * 1976-04-09 1982-07-06 Weyerhaeuser Company Pulping in the presence of a protector
US4172006A (en) * 1976-08-26 1979-10-23 Weyerhaeuser Company Method of delignifying wood chips with oxygen by adding cooking liquor under pressure
CA1079457A (en) * 1976-09-13 1980-06-17 Robert C. Eckert Manganic ion bleaching process
US4197168A (en) * 1978-06-07 1980-04-08 Scm Corporation Recovery of anthraquinone from tall oil
US4594130A (en) * 1978-11-27 1986-06-10 Chang Pei Ching Pulping of lignocellulose with aqueous alcohol and alkaline earth metal salt catalyst
FR2457338A1 (en) * 1979-05-25 1980-12-19 Interox Protecting cellulosic material during alkaline treatment - by adding hydroxy-carboxylated polymer to the soln.
US5770010A (en) * 1995-04-20 1998-06-23 R-J Holding Company Pulping process employing nascent oxygen
US20020129911A1 (en) * 2000-10-16 2002-09-19 Marcoccia Bruno S. Process and configuration for providing external upflow/internal downflow in a continuous digester
WO2005047599A2 (en) * 2003-11-08 2005-05-26 Lally Thomas J Method for manufacturing fire-retardant cellulose-based materials
WO2012034087A1 (en) * 2010-09-10 2012-03-15 Synthetic Genomics, Inc. Solubilization of coal or lignocellulose biomass
US20130233340A1 (en) * 2012-03-07 2013-09-12 Paul Sapan Flavored Function Specific Toothpicks
MX2021009207A (en) * 2019-01-31 2021-11-17 Organofuel Sweden Ab A process for the production of oxidized wood products.

Also Published As

Publication number Publication date
ZA711271B (en) 1971-11-24
SE353749B (en) 1973-02-12
DE2109542C3 (en) 1974-06-12
BR7101287D0 (en) 1973-06-07
US3701712A (en) 1972-10-31
DE2109542A1 (en) 1971-09-16
JPS5022601B1 (en) 1975-08-01
FR2084031A5 (en) 1971-12-17
DE2109542B2 (en) 1973-11-08
NO133594C (en) 1976-05-26
FI55531C (en) 1979-08-10
NO133594B (en) 1976-02-16
FI55531B (en) 1979-04-30

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee