BE452027A - - Google Patents

Info

Publication number
BE452027A
BE452027A BE452027DA BE452027A BE 452027 A BE452027 A BE 452027A BE 452027D A BE452027D A BE 452027DA BE 452027 A BE452027 A BE 452027A
Authority
BE
Belgium
Prior art keywords
acid
cellulose
subsequent
treatment
bleaching
Prior art date
Application number
Other languages
English (en)
French (fr)
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 filed Critical
Publication of BE452027A publication Critical patent/BE452027A/fr

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
    • D21C9/08—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching
    • 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
    • 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
    • D21C9/08—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching
    • D21C9/083—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching with inorganic compounds

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
BE452027D 1942-11-18 1943-08-25 BE452027A (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP1105D DE969601C (de) 1942-11-18 1942-11-18 Verfahren zur Herstellung eines aschearmen, fuer die chemische Weiterverarbeitung geeigneten Zellstoffes aus Einjahrespflanzen

Publications (1)

Publication Number Publication Date
BE452027A true BE452027A (fi) 1943-09-30

Family

ID=7357058

Family Applications (1)

Application Number Title Priority Date Filing Date
BE452027D BE452027A (fi) 1942-11-18 1943-08-25

Country Status (4)

Country Link
BE (1) BE452027A (fi)
CH (1) CH236395A (fi)
DE (1) DE969601C (fi)
FR (1) FR897321A (fi)

Family Cites Families (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE265483C (fi) * 1900-01-01
US11343A (en) * 1854-07-18 Improvement in the manufacture of paper from wood
DE306366C (fi) *
DE231079C (fi) *
DE220645C (fi) * 1909-12-22
NL2395C (fi) * 1912-08-28
FR492222A (fr) * 1915-09-11 1919-07-02 Benjamino Cataldi Nouveau procédé pour l'extraction de la cellulose des fibres végétales, telles que le bois, le coton, la paille, le sparte, etc.
DE372296C (de) * 1919-08-19 1923-03-26 Carl G Schwalbe Dr Verfahren zur Reinigung und Veraenderung der physikalischen Beschaffenheit von Zellstoffen
DE369606C (de) * 1919-08-19 1923-02-21 Carl G Schwalbe Dr Verfahren zur Reinigung und Veraenderung der physikalischen Beschaffenheit von Zellstoffen
DE323744C (de) * 1919-08-21 1920-08-02 Max Mueller Dr Verfahren zur Herstellung von reinen Natronzellstoffen aus Holz, Stroh, Esparto, Schilf, Bambus, Manila und anderen pflanzlichen Rohstoffen durch zweifachen Aufschluss mittels Alkalien und Saeuren
DE336535C (de) * 1919-12-02 1921-05-03 Zellstoff Und Papierfabrikatio Verfahren zur Herstellung reinster Zellulose von baumwoll- oder wollartiger Beschaffenheit aus Vegetabilien mittels saurer Sulfitlaugen
US1705897A (en) * 1922-03-16 1929-03-19 Bradley Linn Bleaching of pulp
US1768820A (en) * 1922-03-16 1930-07-01 Bradley Mckeefe Corp Method of bleaching pulp
US1560591A (en) * 1922-09-02 1925-11-10 Nekoosa Edwards Paper Co Process for making paper pulp
DE405004C (de) * 1922-10-29 1924-10-24 Carl G Schwalbe Dr Verfahren zur Herstellung sehr reiner, inkrusten- und aschenarmer Zellstoffasern
US1620938A (en) * 1923-12-19 1927-03-15 Harry P Bassett Altering viscosity of cellulose-containing materials
DE411304C (de) * 1923-12-21 1925-03-26 Erich Opfermann Dr Verfahren zur Gewinnung von Sulfitzellstoff
US1579525A (en) * 1924-07-14 1926-04-06 William D Gregor Process for treating pulp
US1809286A (en) * 1925-07-01 1931-06-09 Brown Co Pulp of high whiteness and strength and process of producing same
US1729629A (en) * 1927-08-05 1929-10-01 Brown Co Raw material for cellulose derivatives and process of preparation
BE349525A (fi) * 1928-02-15
AT120864B (de) * 1928-03-01 1931-01-26 Papeteries Navarre Verfahren und Vorrichtung zur Reinigung von Holzzellulose.
US1864985A (en) * 1928-05-01 1932-06-28 Joaquin Julio De La Roza Sr Method of manufacturing cellulose
US1732511A (en) * 1928-06-15 1929-10-22 Champion Fibre Company Bleaching fiber pulp
DE528042C (de) * 1930-01-17 1931-06-25 I G Farbenindustrie Akt Ges Verfahren zur Herstellung hochviskoser Zellstoffe
US1996363A (en) * 1930-09-27 1935-04-02 Int Paper Co Method of bleaching cellulose materials
US1957937A (en) * 1930-10-10 1934-05-08 Int Paper Co Process of bleaching fibrous cellulose material
DE586205C (de) * 1931-03-15 1933-10-21 Waldhof Zellstoff Fab Verfahren und Vorrichtung zum Entfernen von Behandlungsfluessigkeiten aller Art, insbesondere Bleichfluessigkeit, aus mit veraenderlicher Geschwindigkeit umlaufenden Fasermassen, insbesondere Zellstoff
DE561181C (de) * 1931-04-19 1932-10-12 I G Farbenindustrie Akt Ges Verfahren zur Darstellung von Anthrachinonderivaten
US1923292A (en) * 1931-08-31 1933-08-22 Harry P Bassett Purification of cellulose material
US1953076A (en) * 1931-09-08 1934-04-03 David B Davies Apparatus for process of bleaching chemical wood pulp
AT142245B (de) * 1932-06-15 1935-06-25 Ig Farbenindustrie Ag Verfahren zur Herstellung eines faserfesten, hoch viskose Lösungen gebenden, sehr reinen Zellstoffes.
US1951017A (en) * 1933-07-20 1934-03-13 Weyerhaeuser Timber Co Method of treating chemical pulf
DE700186C (de) * 1937-06-19 1940-12-14 Dr Erich Opfermann Verfahren zur Befreiung des Zellstoffs von Verunreinigungen, wie Kieselsaeure, Eisenusw., mittels Flusssaeure
GB501485A (en) * 1938-04-13 1939-02-28 Charles Ruzicka A process for the production of a pure white cellulose product from raw sawdust
FR847463A (fr) * 1938-06-16 1939-10-10 Pingris & Molley Fontaine Reun Procédé de traitement des matières cellulosiques en vue de la préparation de la cellulose pure

Also Published As

Publication number Publication date
DE969601C (de) 1958-06-19
CH236395A (de) 1945-02-15
FR897321A (fr) 1945-03-19

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