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BR6909697D0 - PROCESS FOR DESIGNIFICATION AND CLEANING OF CELLULOSE PULP - Google Patents

PROCESS FOR DESIGNIFICATION AND CLEANING OF CELLULOSE PULP

Info

Publication number
BR6909697D0
BR6909697D0 BR209697/69A BR20969769A BR6909697D0 BR 6909697 D0 BR6909697 D0 BR 6909697D0 BR 209697/69 A BR209697/69 A BR 209697/69A BR 20969769 A BR20969769 A BR 20969769A BR 6909697 D0 BR6909697 D0 BR 6909697D0
Authority
BR
Brazil
Prior art keywords
designification
cleaning
cellulose pulp
pulp
cellulose
Prior art date
Application number
BR209697/69A
Other languages
Portuguese (pt)
Inventor
L Smith
D Calvert
Original Assignee
South African Pulp Paper
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 South African Pulp Paper filed Critical South African Pulp Paper
Publication of BR6909697D0 publication Critical patent/BR6909697D0/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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
BR209697/69A 1968-06-13 1969-06-12 PROCESS FOR DESIGNIFICATION AND CLEANING OF CELLULOSE PULP BR6909697D0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA683771 1968-06-13

Publications (1)

Publication Number Publication Date
BR6909697D0 true BR6909697D0 (en) 1973-05-03

Family

ID=25561209

Family Applications (1)

Application Number Title Priority Date Filing Date
BR209697/69A BR6909697D0 (en) 1968-06-13 1969-06-12 PROCESS FOR DESIGNIFICATION AND CLEANING OF CELLULOSE PULP

Country Status (8)

Country Link
US (1) US3657065A (en)
BR (1) BR6909697D0 (en)
ES (1) ES368284A1 (en)
FI (1) FI50551C (en)
FR (1) FR2010827A6 (en)
NO (1) NO126630B (en)
OA (1) OA136E (en)
SE (1) SE363138B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3716447A (en) * 1969-12-15 1973-02-13 Dow Chemical Co Delignification and bleaching of cellulose pulp with oxygen and alkali in the presence of magnesium chloride inhibitor
US4338158A (en) * 1976-04-09 1982-07-06 Weyerhaeuser Company Pulping in the presence of a protector
US4331507A (en) * 1979-12-10 1982-05-25 Dorr-Oliver Incorporated Desilication in alkaline pulp processes
DE3110864C2 (en) * 1981-03-20 1984-10-04 Alfons K. 7513 Stutensee Herr Process for the production of an asbestos-free building material
US5549789A (en) * 1992-08-28 1996-08-27 The United States Of America As Represented By The Secretary Of Agriculture Oxidation of lignin and polysaccharides mediated by polyoxometalate treatment of wood pulp
US5302248A (en) * 1992-08-28 1994-04-12 The United States Of America As Represented By The Secretary Of Agriculture Delignification of wood pulp by vanadium-substituted polyoxometalates
CA2373562A1 (en) * 2001-02-27 2002-08-27 Aileen Reyes Gibson Eop & ep process for bleaching of chemical pulp
US7976676B2 (en) * 2006-12-18 2011-07-12 International Paper Company Process of bleaching softwood pulps in a D1 or D2 stage in a presence of a weak base
US7976677B2 (en) * 2006-12-18 2011-07-12 International Paper Company Process of bleaching hardwood pulps in a D1 or D2 stage in a presence of a weak base

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1887863A (en) * 1929-11-15 1932-11-15 Arthur D Little Ind Corp Process for making pulp
US2169473A (en) * 1935-02-08 1939-08-15 Cellulose Res Corp Method of producing cellulose pulp
FR1387853A (en) * 1963-09-19 1965-02-05 Air Liquide Delignification and bleaching of chemical and semi-chemical cellulose pulps
US3382149A (en) * 1964-10-29 1968-05-07 Du Pont Bleaching of hardwood sulfite pulp with hydrogen peroxide, including pretreatment with alkali

Also Published As

Publication number Publication date
OA136E (en) 1970-12-15
FR2010827A6 (en) 1970-02-20
FI50551C (en) 1976-04-12
ES368284A1 (en) 1971-07-16
FI50551B (en) 1975-12-31
NO126630B (en) 1973-03-05
SE363138B (en) 1974-01-07
US3657065A (en) 1972-04-18

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