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CA752864A - Extraction of fibrous cellulosic material with ammonia following treatment with chlorine, chlorine dioxide or other reagents - Google Patents

Extraction of fibrous cellulosic material with ammonia following treatment with chlorine, chlorine dioxide or other reagents

Info

Publication number
CA752864A
CA752864A CA752864A CA752864DA CA752864A CA 752864 A CA752864 A CA 752864A CA 752864 A CA752864 A CA 752864A CA 752864D A CA752864D A CA 752864DA CA 752864 A CA752864 A CA 752864A
Authority
CA
Canada
Prior art keywords
chlorine
reagents
extraction
cellulosic material
following treatment
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
CA752864A
Inventor
H. Yorston Frederic
Liebergott Norman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pulp and Paper Research Institute of Canada
Original Assignee
Pulp and Paper Research Institute of 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.)
Publication date
Application granted granted Critical
Publication of CA752864A publication Critical patent/CA752864A/en
Expired legal-status Critical Current

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)
  • Paper (AREA)
CA752864A 1965-10-12 Extraction of fibrous cellulosic material with ammonia following treatment with chlorine, chlorine dioxide or other reagents Expired CA752864A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA942675 1965-10-12

Publications (1)

Publication Number Publication Date
CA752864A true CA752864A (en) 1967-02-14

Family

ID=4142347

Family Applications (1)

Application Number Title Priority Date Filing Date
CA752864A Expired CA752864A (en) 1965-10-12 Extraction of fibrous cellulosic material with ammonia following treatment with chlorine, chlorine dioxide or other reagents

Country Status (2)

Country Link
US (1) US3472731A (en)
CA (1) CA752864A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3630828A (en) * 1968-05-13 1971-12-28 Pulp Paper Res Inst Bleaching of a low-density, substantially uncompacted, porous fluffed cellulosic pulp
JPS5031201B1 (en) * 1968-07-12 1975-10-08

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA849982A (en) * 1967-12-15 1970-08-25 M. Clayton David Process for producing wood pulp
US4118271A (en) * 1972-03-25 1978-10-03 Jujo Paper Co., Ltd. Method for the preparation of a pulp
US4002526A (en) * 1975-10-10 1977-01-11 International Paper Company Oxygen-alkali delignification of low consistency wood pulp
US4049490A (en) * 1976-02-23 1977-09-20 Veniamin Petrovich Zaplatin Electrodialysis of bleaching effluent
AU3102077A (en) * 1976-12-01 1979-06-07 New Zealand Dev Finance Treating lignocellulosic or cellulosic pulp
US4244780A (en) * 1979-11-15 1981-01-13 Nalco Chemical Company Use of thiourea dioxide in pulp bleaching processes to preserve pulp strength and aid in brightness
KR101960546B1 (en) * 2012-12-07 2019-03-21 롯데정밀화학 주식회사 Method for Protecting Viscosity Change of Cellulous Ether

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1345776A (en) * 1920-01-02 1920-07-06 Hofste Maarten Production of textile fibrous material
DE345314C (en) * 1920-07-26 1921-12-09 Gonzalo Jose Bustamante Process for the cold extraction of cellulose from vegetable matter without the application of pressure
GB321282A (en) * 1928-09-25 1929-11-07 Alfred George Pollard Manufacture of cellulose from vegetable fibre
GB601643A (en) * 1945-04-13 1948-05-10 Hercules Powder Co Ltd Improvements in or relating to the bleaching of cellulose
US2964518A (en) * 1956-06-28 1960-12-13 Francis H Snyder And Associate Amino-hydro-pyrolysis of woody materials

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3630828A (en) * 1968-05-13 1971-12-28 Pulp Paper Res Inst Bleaching of a low-density, substantially uncompacted, porous fluffed cellulosic pulp
JPS5031201B1 (en) * 1968-07-12 1975-10-08

Also Published As

Publication number Publication date
US3472731A (en) 1969-10-14

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