NO117673B - - Google Patents

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Publication number
NO117673B
NO117673B NO147520A NO14752063A NO117673B NO 117673 B NO117673 B NO 117673B NO 147520 A NO147520 A NO 147520A NO 14752063 A NO14752063 A NO 14752063A NO 117673 B NO117673 B NO 117673B
Authority
NO
Norway
Prior art keywords
sulfonamide
diazo
oxo
aromatic
dehydroabiethyl
Prior art date
Application number
NO147520A
Other languages
English (en)
Norwegian (no)
Inventor
S Rydin
Original Assignee
Svenska Cellulosa 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 Svenska Cellulosa Ab filed Critical Svenska Cellulosa Ab
Publication of NO117673B publication Critical patent/NO117673B/no

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
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1026—Other features in bleaching processes

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Paper (AREA)
NO147520A 1962-02-14 1963-02-13 NO117673B (en, 2012)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE160062 1962-02-14

Publications (1)

Publication Number Publication Date
NO117673B true NO117673B (en, 2012) 1969-09-08

Family

ID=20258489

Family Applications (1)

Application Number Title Priority Date Filing Date
NO147520A NO117673B (en, 2012) 1962-02-14 1963-02-13

Country Status (2)

Country Link
US (1) US3313678A (en, 2012)
NO (1) NO117673B (en, 2012)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE333299B (sv) * 1967-11-10 1971-03-08 Sunds Ab Foerfarande vid och anordning foer blekning av foeretraedesvis cellulosamassa med gasformigt blekmedel
US3884752A (en) * 1973-09-17 1975-05-20 Int Paper Co Single vessel wood pulp bleaching with chlorine dioxide followed by sodium hypochlorite or alkaline extraction
FR2479295A2 (fr) * 1980-03-31 1981-10-02 Europeen Cellulose Procede de delignification de pate a papier chimique ecrue
CA1151363A (en) * 1979-04-17 1983-08-09 Henri Lemoyne Process for the delignification of unbleached chemical pulp
NO164310C (no) * 1984-03-05 1990-09-19 Kamyr Inc Fremgangsmaate for behandling av en mekanisk masse med hydrosulfitt-blekekjemikalier.
US5589036A (en) * 1992-05-18 1996-12-31 Champion International Corporation Controlling pulp flow in an upflow pulp treatment tower
US5372679A (en) * 1992-06-08 1994-12-13 Air Products And Chemicals, Inc. Reactor system for treating cellulosic pulp at a constant upward flow velocity

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1643566A (en) * 1925-10-16 1927-09-27 Thorne Carl Busch Process for bleaching and the like purposes
US2089992A (en) * 1932-03-14 1937-08-17 Int Paper Co Continuous bleaching process and apparatus
US2474862A (en) * 1942-10-15 1949-07-05 Kamyr Ab Process and apparatus for continuous digestion of fibrous materials
US2662821A (en) * 1949-05-03 1953-12-15 Celotex Corp Fiber preparation device
US2711359A (en) * 1953-10-19 1955-06-21 Kamyr Ab Bleaching plant and method of bleaching cellulose pulp
US2769710A (en) * 1954-01-12 1956-11-06 Cellulose Dev Corp Ltd Process for the continuous treatment of vegetable fibers
DE1034968B (de) * 1956-01-11 1958-07-24 Hans Werner Meyer Kontinuierliches Verfahren zum chemischen Aufschluss von zellulosehaltigen Faserstoffen zu Zellstoff oder Halbzellstoff und Vorrichtung zu dessen Durchfuehrung
DE1262116B (de) * 1958-07-09 1968-02-29 Kamyr Ab Verfahren und Vorrichtung zum Vorwaschen des Zellstoffbreis in einem stehenden Zellstoffkocher

Also Published As

Publication number Publication date
US3313678A (en) 1967-04-11

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