CA973660A - Treatment of cellulosic matter with active nitrogen - Google Patents

Treatment of cellulosic matter with active nitrogen

Info

Publication number
CA973660A
CA973660A CA143,298A CA143298A CA973660A CA 973660 A CA973660 A CA 973660A CA 143298 A CA143298 A CA 143298A CA 973660 A CA973660 A CA 973660A
Authority
CA
Canada
Prior art keywords
treatment
active nitrogen
cellulosic matter
cellulosic
matter
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
CA143,298A
Other versions
CA143298S (en
Inventor
Thomas Joachimides
David W. Clayton
Norman Liebergott
Joseph Merka
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.)
Filing date
Publication date
Application filed by Pulp and Paper Research Institute of Canada filed Critical Pulp and Paper Research Institute of Canada
Priority to CA143,298A priority Critical patent/CA973660A/en
Priority to US00360971A priority patent/US3806404A/en
Priority to AR248206A priority patent/AR200489A1/en
Priority to SE7307413A priority patent/SE396970B/en
Priority to JP48059635A priority patent/JPS5034642B2/ja
Priority to BR3947/73A priority patent/BR7303947D0/en
Priority to SU7301925441A priority patent/SU578015A3/en
Priority to AU56214/73A priority patent/AU469963B2/en
Priority to IT50277/73A priority patent/IT1000024B/en
Priority to DE2327407A priority patent/DE2327407C3/en
Priority to FR7319406A priority patent/FR2186572B1/fr
Application granted granted Critical
Publication of CA973660A publication Critical patent/CA973660A/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
    • D21C9/1063—Bleaching ; Apparatus therefor with compounds not otherwise provided for, e.g. activated gases

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
CA143,298A 1972-05-29 1972-05-29 Treatment of cellulosic matter with active nitrogen Expired CA973660A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
CA143,298A CA973660A (en) 1972-05-29 1972-05-29 Treatment of cellulosic matter with active nitrogen
US00360971A US3806404A (en) 1972-05-29 1973-05-16 Treatment of cellulosic matter with activated nitrogen or other activated gases
AR248206A AR200489A1 (en) 1972-05-29 1973-05-23 PROCEDURE FOR OBTAINING DELIGNIFIED AND WHITENED CELLULOSIC PULP WITH BETTER BRIGHTNESS AND RESISTANCE
SE7307413A SE396970B (en) 1972-05-29 1973-05-25 PROCEDURE FOR DELIGNIFICATION AND / OR BLACHING OF CHEMICAL OR MECHANICAL MASS WITH AN "ACTIVE" OR "ELECTRONICALLY EXCITED" FORM OF A GAS
JP48059635A JPS5034642B2 (en) 1972-05-29 1973-05-28
BR3947/73A BR7303947D0 (en) 1972-05-29 1973-05-28 PROCESS TO TREAT CHEMICAL PULP AND PROCESS TO TARGET CELLULUS PULP
SU7301925441A SU578015A3 (en) 1972-05-29 1973-05-28 Method of bleaching cellulose-containing semi-manufactured article
AU56214/73A AU469963B2 (en) 1972-05-29 1973-05-28 Treatment of cellulosic matter with activated nitrogen or other activated gases
IT50277/73A IT1000024B (en) 1972-05-29 1973-05-29 PROCESS OF DELIGNIFICATION AND WHITENING TREATMENT OF MECHANICAL CELLULOSE PASTE
DE2327407A DE2327407C3 (en) 1972-05-29 1973-05-29 Process for destroying lignin or for bleaching chemically processed material or pulp
FR7319406A FR2186572B1 (en) 1972-05-29 1973-05-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA143,298A CA973660A (en) 1972-05-29 1972-05-29 Treatment of cellulosic matter with active nitrogen

Publications (1)

Publication Number Publication Date
CA973660A true CA973660A (en) 1975-09-02

Family

ID=4093395

Family Applications (1)

Application Number Title Priority Date Filing Date
CA143,298A Expired CA973660A (en) 1972-05-29 1972-05-29 Treatment of cellulosic matter with active nitrogen

Country Status (11)

Country Link
US (1) US3806404A (en)
JP (1) JPS5034642B2 (en)
AR (1) AR200489A1 (en)
AU (1) AU469963B2 (en)
BR (1) BR7303947D0 (en)
CA (1) CA973660A (en)
DE (1) DE2327407C3 (en)
FR (1) FR2186572B1 (en)
IT (1) IT1000024B (en)
SE (1) SE396970B (en)
SU (1) SU578015A3 (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2255418B1 (en) * 1973-12-21 1976-05-07 Europeen Cellulose
JPS52120260U (en) * 1976-03-11 1977-09-12
JPS5528902Y2 (en) * 1976-03-11 1980-07-10
US4080249A (en) * 1976-06-02 1978-03-21 International Paper Company Delignification and bleaching of a lignocellulosic pulp slurry with ozone
US4216054A (en) 1977-09-26 1980-08-05 Weyerhaeuser Company Low-consistency ozone delignification
US4372812A (en) * 1978-04-07 1983-02-08 International Paper Company Chlorine free process for bleaching lignocellulosic pulp
US4427490A (en) 1978-04-07 1984-01-24 International Paper Company Delignification and bleaching process for lignocellulosic pulp with peroxide in the presence of metal additives
US4410397A (en) * 1978-04-07 1983-10-18 International Paper Company Delignification and bleaching process and solution for lignocellulosic pulp with peroxide in the presence of metal additives
JPS5949446B2 (en) * 1978-12-25 1984-12-03 日本精工株式会社 Self-aligning device for clutch release bearing device
US4294654A (en) * 1980-03-21 1981-10-13 International Paper Company Delignification and bleaching of lignocellulosic pulp via photo-oxygenation
WO1984000181A1 (en) * 1982-06-24 1984-01-19 Scott Paper Co Ozone bleaching of cellulosic materials
GR81673B (en) * 1983-05-06 1984-12-12 Personal Products Co
US4597930A (en) * 1983-07-11 1986-07-01 Szal John R Method of manufacture of a felted fibrous product from a nonaqueous medium
JPS634434U (en) * 1986-06-26 1988-01-12
JPS6440723A (en) * 1987-08-07 1989-02-13 Nippon Seiko Kk Clutch release bearing device
US5139613A (en) * 1988-01-21 1992-08-18 Canadian Liquid Air Limited Process for preparing a paper pulp using carbon dioxide as an acidifying agent for a bleached pulp
US5770010A (en) * 1995-04-20 1998-06-23 R-J Holding Company Pulping process employing nascent oxygen
FI110533B (en) * 2000-05-04 2003-02-14 Aga Ab Method for controlling microbial growth
DE102005049230A1 (en) * 2005-06-16 2006-12-28 Siemens Ag Process for the treatment of unwoven fibrous materials and apparatus for bleaching
DE102005049231A1 (en) * 2005-06-16 2006-12-28 Siemens Ag Process for the treatment of a process material in the production of paper, cardboard or cardboard
DE102005049274A1 (en) * 2005-06-16 2006-12-28 Siemens Ag Process for the treatment of a process material with large-area plasma
DE102006024404A1 (en) * 2006-05-24 2007-11-29 Siemens Ag Method for improving the quality of a fiber suspension
US20090090478A1 (en) * 2007-10-05 2009-04-09 Hollomon Martha G Selectivity improvement in oxygen delignification and bleaching of lignocellulose pulp using singlet oxygen

Also Published As

Publication number Publication date
JPS4966902A (en) 1974-06-28
SU578015A3 (en) 1977-10-25
FR2186572A1 (en) 1974-01-11
US3806404A (en) 1974-04-23
SE396970B (en) 1977-10-10
DE2327407C3 (en) 1978-06-08
FR2186572B1 (en) 1976-09-17
JPS5034642B2 (en) 1975-11-10
DE2327407B2 (en) 1977-10-13
DE2327407A1 (en) 1973-12-13
AR200489A1 (en) 1974-11-15
AU469963B2 (en) 1976-02-26
AU5621473A (en) 1974-11-28
BR7303947D0 (en) 1974-07-18
IT1000024B (en) 1976-03-30

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