CH191024A - Verfahren zum Reinigen von Holzzellstoff. - Google Patents

Verfahren zum Reinigen von Holzzellstoff.

Info

Publication number
CH191024A
CH191024A CH191024DA CH191024A CH 191024 A CH191024 A CH 191024A CH 191024D A CH191024D A CH 191024DA CH 191024 A CH191024 A CH 191024A
Authority
CH
Switzerland
Prior art keywords
wood pulp
cleaning wood
cleaning
pulp
wood
Prior art date
Application number
Other languages
German (de)
English (en)
Inventor
Company Canadian Interna Paper
Original Assignee
Int Paper Canada
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 Int Paper Canada filed Critical Int Paper Canada
Publication of CH191024A publication Critical patent/CH191024A/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)
CH191024D 1934-07-16 1936-05-30 Verfahren zum Reinigen von Holzzellstoff. CH191024A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US735438A US2074473A (en) 1934-07-16 1934-07-16 Process of removing coloring matter from wood pulp

Publications (1)

Publication Number Publication Date
CH191024A true CH191024A (de) 1937-05-31

Family

ID=10018795

Family Applications (1)

Application Number Title Priority Date Filing Date
CH191024D CH191024A (de) 1934-07-16 1936-05-30 Verfahren zum Reinigen von Holzzellstoff.

Country Status (5)

Country Link
US (1) US2074473A (enEXAMPLES)
BE (1) BE415620A (enEXAMPLES)
CH (1) CH191024A (enEXAMPLES)
FR (1) FR807159A (enEXAMPLES)
GB (1) GB468306A (enEXAMPLES)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2502330A (en) * 1943-03-01 1950-03-28 Clarence E Libby Washing paper pulp to remove coloring matter
US2716058A (en) * 1950-06-24 1955-08-23 Int Paper Canada Deresination of wood pulp
US2738271A (en) * 1954-04-02 1956-03-13 Fiber Processors Inc Process for degumming ramie fiber
US3174896A (en) * 1961-12-14 1965-03-23 Rayonier Inc Treatment of spent caustic solution
FI121382B (fi) * 2002-12-23 2010-10-29 Arizona Chemical B V Puunkeiton apuaine, sen valmistus ja käyttö

Also Published As

Publication number Publication date
BE415620A (enEXAMPLES) 1936-06-30
FR807159A (fr) 1937-01-06
GB468306A (en) 1937-07-02
US2074473A (en) 1937-03-23

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