DK109015C - Fremgangsmåde til reduktiv blegning af træpulp med lavt celluloseindhold. - Google Patents

Fremgangsmåde til reduktiv blegning af træpulp med lavt celluloseindhold.

Info

Publication number
DK109015C
DK109015C DK92466AA DK92466A DK109015C DK 109015 C DK109015 C DK 109015C DK 92466A A DK92466A A DK 92466AA DK 92466 A DK92466 A DK 92466A DK 109015 C DK109015 C DK 109015C
Authority
DK
Denmark
Prior art keywords
wood pulp
cellulose content
reductive bleaching
low cellulose
low
Prior art date
Application number
DK92466AA
Other languages
English (en)
Original Assignee
Fmc 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 Fmc Corp filed Critical Fmc Corp
Application granted granted Critical
Publication of DK109015C publication Critical patent/DK109015C/da

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)
DK92466AA 1965-02-23 1966-02-22 Fremgangsmåde til reduktiv blegning af træpulp med lavt celluloseindhold. DK109015C (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US43462765A 1965-02-23 1965-02-23

Publications (1)

Publication Number Publication Date
DK109015C true DK109015C (da) 1968-03-04

Family

ID=23724985

Family Applications (1)

Application Number Title Priority Date Filing Date
DK92466AA DK109015C (da) 1965-02-23 1966-02-22 Fremgangsmåde til reduktiv blegning af træpulp med lavt celluloseindhold.

Country Status (9)

Country Link
US (1) US3507743A (da)
BE (1) BE676663A (da)
DE (1) DE1546253A1 (da)
DK (1) DK109015C (da)
ES (1) ES322925A1 (da)
FI (1) FI43809B (da)
GB (1) GB1095280A (da)
NL (1) NL6601601A (da)
SE (1) SE314580B (da)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4002526A (en) * 1975-10-10 1977-01-11 International Paper Company Oxygen-alkali delignification of low consistency wood 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
US4675076A (en) * 1986-10-01 1987-06-23 Ppg Industries, Inc. Method for brightening pulp
US5338402A (en) * 1987-05-25 1994-08-16 Societe Atochem Process for preparing a bleached chemithermomechanical pulp
US5958184A (en) * 1992-06-10 1999-09-28 Mitsubishi Gas Chemical Company Inc. Process for producing thiourea dioxide
FI105701B (fi) 1995-10-20 2000-09-29 Ahlstrom Machinery Oy Menetelmä ja laitteisto massan käsittelemiseksi
US6899790B2 (en) * 2000-03-06 2005-05-31 Georgia-Pacific Corporation Method of providing papermaking fibers with durable curl
US6627041B2 (en) * 2000-03-06 2003-09-30 Georgia-Pacific Corporation Method of bleaching and providing papermaking fibers with durable curl
US6428653B1 (en) 2000-12-04 2002-08-06 West Fraser Timber Co. Ltd. Method of bleaching with formamidine sulfinic acid using a reducing agent to eliminate residual peroxide
BRPI0519728B1 (pt) * 2004-12-21 2016-12-13 Hercules Inc resinas catiônicas reativas e processo de fabricação de papel

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2071304A (en) * 1934-12-04 1937-02-16 Great Western Electro Chemical Co Process of manufacture of products of ground wood pulp

Also Published As

Publication number Publication date
SE314580B (da) 1969-09-08
ES322925A1 (es) 1966-11-16
US3507743A (en) 1970-04-21
FI43809B (da) 1971-03-01
DE1546253A1 (de) 1970-04-30
GB1095280A (en) 1967-12-13
NL6601601A (da) 1966-08-24
BE676663A (da) 1966-07-18

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