AT339724B - Entfernung bzw. unschadlichmachung naturlicher harze in holzfaserstoff - Google Patents

Entfernung bzw. unschadlichmachung naturlicher harze in holzfaserstoff

Info

Publication number
AT339724B
AT339724B AT709674A AT709674A AT339724B AT 339724 B AT339724 B AT 339724B AT 709674 A AT709674 A AT 709674A AT 709674 A AT709674 A AT 709674A AT 339724 B AT339724 B AT 339724B
Authority
AT
Austria
Prior art keywords
distance
wood fiber
natural resins
restoring natural
restoring
Prior art date
Application number
AT709674A
Other languages
English (en)
Other versions
ATA709674A (de
Original Assignee
Ciba Geigy Ag
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 Ciba Geigy Ag filed Critical Ciba Geigy Ag
Publication of ATA709674A publication Critical patent/ATA709674A/de
Application granted granted Critical
Publication of AT339724B publication Critical patent/AT339724B/de

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
    • D21C9/086—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 organic compounds or compositions comprising organic compounds

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
AT709674A 1973-09-04 1974-09-03 Entfernung bzw. unschadlichmachung naturlicher harze in holzfaserstoff AT339724B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1266973A CH578652A5 (de) 1973-09-04 1973-09-04

Publications (2)

Publication Number Publication Date
ATA709674A ATA709674A (de) 1977-02-15
AT339724B true AT339724B (de) 1977-11-10

Family

ID=4385285

Family Applications (1)

Application Number Title Priority Date Filing Date
AT709674A AT339724B (de) 1973-09-04 1974-09-03 Entfernung bzw. unschadlichmachung naturlicher harze in holzfaserstoff

Country Status (3)

Country Link
AT (1) AT339724B (de)
CH (1) CH578652A5 (de)
DE (1) DE2441021A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1249903A (en) * 1984-05-10 1989-02-14 Christopher C. Mollett Composition and method of deinking of recycled cellulosic material

Also Published As

Publication number Publication date
DE2441021A1 (de) 1975-03-13
CH578652A5 (de) 1976-08-13
ATA709674A (de) 1977-02-15

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Legal Events

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