IT1004819B - Procedimento perfezionato per la sbianca della pastalegno - Google Patents

Procedimento perfezionato per la sbianca della pastalegno

Info

Publication number
IT1004819B
IT1004819B IT67249/74A IT6724974A IT1004819B IT 1004819 B IT1004819 B IT 1004819B IT 67249/74 A IT67249/74 A IT 67249/74A IT 6724974 A IT6724974 A IT 6724974A IT 1004819 B IT1004819 B IT 1004819B
Authority
IT
Italy
Prior art keywords
pastalegno
whitening
perfected procedure
perfected
procedure
Prior art date
Application number
IT67249/74A
Other languages
English (en)
Original Assignee
Int Paper Co
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 Int Paper Co filed Critical Int Paper Co
Application granted granted Critical
Publication of IT1004819B publication Critical patent/IT1004819B/it

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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
IT67249/74A 1973-09-17 1974-01-30 Procedimento perfezionato per la sbianca della pastalegno IT1004819B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US398165A US3884752A (en) 1973-09-17 1973-09-17 Single vessel wood pulp bleaching with chlorine dioxide followed by sodium hypochlorite or alkaline extraction

Publications (1)

Publication Number Publication Date
IT1004819B true IT1004819B (it) 1976-07-20

Family

ID=23574252

Family Applications (1)

Application Number Title Priority Date Filing Date
IT67249/74A IT1004819B (it) 1973-09-17 1974-01-30 Procedimento perfezionato per la sbianca della pastalegno

Country Status (12)

Country Link
US (1) US3884752A (it)
JP (1) JPS5058302A (it)
BE (1) BE810468A (it)
BR (1) BR7407461D0 (it)
CA (1) CA1019906A (it)
DE (1) DE2407542A1 (it)
FI (1) FI105174A (it)
FR (1) FR2245817B1 (it)
IT (1) IT1004819B (it)
LU (1) LU69421A1 (it)
NO (1) NO740054L (it)
SE (1) SE408069B (it)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2432574A1 (fr) * 1978-08-01 1980-02-29 Europeen Cellulose Procede de blanchiment de pate a papier
US4543155A (en) * 1983-01-31 1985-09-24 The Boc Group, Inc. Method for bleaching wood pulp including dissolving oxygen into the dilution water of an extraction stage
JPS60244287A (ja) * 1984-05-21 1985-12-04 Res Assoc Petroleum Alternat Dev<Rapad> セルラ−ゼ生産用基質の製造法
JPS62106999U (it) * 1985-12-21 1987-07-08
US4944842A (en) * 1987-03-26 1990-07-31 Kamyr, Inc. Method for reducing contamination in pulp processing
JPH076147B2 (ja) * 1988-12-16 1995-01-30 新王子製紙株式会社 リグノセルロース物質の漂白方法
US5268075A (en) * 1989-10-19 1993-12-07 North Carolina State University High efficiency two-step, high-low pH chlorine dioxide pulp bleaching process
FI122626B (fi) * 2006-03-31 2012-04-30 Laennen Tutkimus Western Res Inc Oy Kemiallisen massan valkaisumenetelmä
FR3062138B1 (fr) * 2017-01-23 2019-06-07 Centre Technique De L'industrie Des Papiers, Cartons Et Celluloses Procede de blanchiment d'une pate a papier

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2031485A (en) * 1931-05-20 1936-02-18 Paper Patents Co Method of bleaching pulp
US2001268A (en) * 1932-09-21 1935-05-14 Hooker Electrochemical Co Pulp treating process
USRE23218E (en) * 1945-02-21 1950-04-11 Catalytic bleaching with chlorites
US2587064A (en) * 1949-03-09 1952-02-26 Int Paper Canada Method of bleaching wood pulp
US2558054A (en) * 1949-03-16 1951-06-26 Celanese Corp Purification of cellulosic materials
BE557828A (it) * 1956-09-19
US3294624A (en) * 1962-01-24 1966-12-27 Ass Pulp & Paper Mills Bleaching treated wood chips
US3313678A (en) * 1962-02-14 1967-04-11 Svenska Cellulose Aktiebolaget Bleaching of cellulose pulp in towers in completely filled and closed system
US3433702A (en) * 1965-06-28 1969-03-18 Hooker Chemical Corp Woodpulp bleaching process
US3630828A (en) * 1968-05-13 1971-12-28 Pulp Paper Res Inst Bleaching of a low-density, substantially uncompacted, porous fluffed cellulosic pulp
US3501374A (en) * 1968-12-26 1970-03-17 Hooker Chemical Corp Sequential bleaching of kraft pulp with chlorine dioxide and chlorine
US3595743A (en) * 1969-02-28 1971-07-27 Anglo Paper Prod Ltd Five stage woodpulp bleaching process
CA864409A (en) * 1969-04-14 1971-02-23 H. Andrews Douglas Pulp bleaching process

Also Published As

Publication number Publication date
JPS5058302A (it) 1975-05-21
NO740054L (it) 1975-04-14
SE7400192L (it) 1975-03-18
SE408069B (sv) 1979-05-14
LU69421A1 (it) 1975-05-21
FR2245817A1 (it) 1975-04-25
BE810468A (fr) 1974-07-31
FI105174A (it) 1975-03-18
US3884752A (en) 1975-05-20
DE2407542A1 (de) 1975-04-24
CA1019906A (en) 1977-11-01
BR7407461D0 (pt) 1975-07-22
FR2245817B1 (it) 1978-03-17

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