FR2301632A1 - OXYGEN BLEACHING OF PAPER PULP IN THE PRESENCE OF A PROTECTOR WITH A HIGH SILIC CONTENT - Google Patents

OXYGEN BLEACHING OF PAPER PULP IN THE PRESENCE OF A PROTECTOR WITH A HIGH SILIC CONTENT

Info

Publication number
FR2301632A1
FR2301632A1 FR7601074A FR7601074A FR2301632A1 FR 2301632 A1 FR2301632 A1 FR 2301632A1 FR 7601074 A FR7601074 A FR 7601074A FR 7601074 A FR7601074 A FR 7601074A FR 2301632 A1 FR2301632 A1 FR 2301632A1
Authority
FR
France
Prior art keywords
silic
protector
content
paper pulp
oxygen bleaching
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.)
Granted
Application number
FR7601074A
Other languages
French (fr)
Other versions
FR2301632B1 (en
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.)
Potlatch Corp
Original Assignee
Potlatch Corp
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 Potlatch Corp filed Critical Potlatch Corp
Publication of FR2301632A1 publication Critical patent/FR2301632A1/en
Application granted granted Critical
Publication of FR2301632B1 publication Critical patent/FR2301632B1/fr
Granted 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
    • 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)
FR7601074A 1975-02-18 1976-01-16 OXYGEN BLEACHING OF PAPER PULP IN THE PRESENCE OF A PROTECTOR WITH A HIGH SILIC CONTENT Granted FR2301632A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US55027475A 1975-02-18 1975-02-18

Publications (2)

Publication Number Publication Date
FR2301632A1 true FR2301632A1 (en) 1976-09-17
FR2301632B1 FR2301632B1 (en) 1980-06-20

Family

ID=24196466

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7601074A Granted FR2301632A1 (en) 1975-02-18 1976-01-16 OXYGEN BLEACHING OF PAPER PULP IN THE PRESENCE OF A PROTECTOR WITH A HIGH SILIC CONTENT

Country Status (7)

Country Link
JP (1) JPS5220562B2 (en)
CA (1) CA1062858A (en)
DE (1) DE2552931A1 (en)
FR (1) FR2301632A1 (en)
GB (1) GB1519072A (en)
SE (1) SE7600243L (en)
ZA (1) ZA76274B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007036376A1 (en) * 2007-07-31 2009-02-05 Voith Patent Gmbh Bleached pulp
SE543640C2 (en) * 2019-09-04 2021-05-11 Stora Enso Oyj Fluff pulp from oxygen delignified pulp

Also Published As

Publication number Publication date
CA1062858A (en) 1979-09-25
FR2301632B1 (en) 1980-06-20
DE2552931A1 (en) 1976-09-02
SE7600243L (en) 1976-08-19
JPS5196505A (en) 1976-08-24
ZA76274B (en) 1976-12-29
JPS5220562B2 (en) 1977-06-04
GB1519072A (en) 1978-07-26

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Legal Events

Date Code Title Description
ST Notification of lapse