BR7702713A - PROCESS FOR DESIGNIFICATION OF LIGNOCELLULOSIC MATERIAL - Google Patents

PROCESS FOR DESIGNIFICATION OF LIGNOCELLULOSIC MATERIAL

Info

Publication number
BR7702713A
BR7702713A BR7702713A BR7702713A BR7702713A BR 7702713 A BR7702713 A BR 7702713A BR 7702713 A BR7702713 A BR 7702713A BR 7702713 A BR7702713 A BR 7702713A BR 7702713 A BR7702713 A BR 7702713A
Authority
BR
Brazil
Prior art keywords
designification
lignocellulosic material
lignocellulosic
Prior art date
Application number
BR7702713A
Other languages
Portuguese (pt)
Inventor
A Yethon
Original Assignee
Canadian Ind
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 Canadian Ind filed Critical Canadian Ind
Publication of BR7702713A publication Critical patent/BR7702713A/en

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
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
BR7702713A 1976-05-04 1977-04-28 PROCESS FOR DESIGNIFICATION OF LIGNOCELLULOSIC MATERIAL BR7702713A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA251,752A CA1070909A (en) 1976-05-04 1976-05-04 Nitrogen dioxide-oxygen delignification

Publications (1)

Publication Number Publication Date
BR7702713A true BR7702713A (en) 1978-03-21

Family

ID=4105864

Family Applications (1)

Application Number Title Priority Date Filing Date
BR7702713A BR7702713A (en) 1976-05-04 1977-04-28 PROCESS FOR DESIGNIFICATION OF LIGNOCELLULOSIC MATERIAL

Country Status (12)

Country Link
JP (1) JPS52134690A (en)
AU (1) AU498646B2 (en)
BR (1) BR7702713A (en)
CA (1) CA1070909A (en)
DE (1) DE2717257A1 (en)
ES (1) ES458434A1 (en)
FI (1) FI771383A (en)
FR (1) FR2350421A1 (en)
NO (1) NO771297L (en)
NZ (1) NZ183555A (en)
SE (1) SE7705136L (en)
ZA (1) ZA771424B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE441192B (en) * 1980-05-27 1985-09-16 Mo Och Domsjoe Ab PROCEDURE FOR DELIGNIFICATION OF CHEMICAL CELLULOSAMASSA WITH OXYGEN IN THE PRESENCE OF ONE OR MULTIPLE NEUTRALIZING AGENTS
SE421938B (en) * 1980-06-05 1982-02-08 Mo Och Domsjoe Ab PROCEDURE FOR TREATMENT OF CELLULOSAMASSA
SE445122B (en) * 1980-12-17 1986-06-02 Mo Och Domsjoe Ab PROCEDURE FOR DELIGNIFICATION OF CELLULOSAMASSA IN THE PRESENTATION OF NITROGEN Dioxide
SE425674B (en) * 1981-03-23 1982-10-25 Mo Och Domsjoe Ab PROCEDURE FOR DELIGNIFICATION OF CELLULOSAMASSA WITH NITROGEN Dioxide AND Oxygen
DE3118384C1 (en) * 1981-05-09 1982-11-11 Mannesmann AG, 4000 Düsseldorf Process for bleaching chemically produced pulp with ozone
SE448006B (en) * 1981-09-21 1987-01-12 Mo Och Domsjoe Ab PROCEDURE FOR WHITING CELLULOSAMASSA INCLUDING AN ACTIVATION STEP WITH NITROGEN OXIDES
SE450394B (en) * 1981-12-30 1987-06-22 Mo Och Domsjoe Ab PROCEDURE FOR BLACKING OF SIMILAR CELLULOSAMASSA
JP2002302888A (en) * 2001-04-05 2002-10-18 Oji Paper Co Ltd Method of production for bleached pulp
FI20115754A0 (en) * 2011-03-22 2011-07-15 Andritz Oy Process and arrangement for the treatment of chemical pulp

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1505070A (en) * 1974-06-11 1978-03-22 Canadian Ind Process for bleaching of lignocellulosic material

Also Published As

Publication number Publication date
ZA771424B (en) 1978-02-22
FR2350421A1 (en) 1977-12-02
NO771297L (en) 1977-11-07
NZ183555A (en) 1978-11-13
JPS52134690A (en) 1977-11-11
AU2311177A (en) 1978-09-14
SE7705136L (en) 1977-11-05
FI771383A (en) 1977-11-05
AU498646B2 (en) 1979-03-22
DE2717257A1 (en) 1977-11-17
FR2350421B1 (en) 1982-08-13
CA1070909A (en) 1980-02-05
ES458434A1 (en) 1978-03-16

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Legal Events

Date Code Title Description
B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 28/04/92