PT91128A - Processo de fabricacao de pastas de celulose quimicotermomecanicas branqueadas - Google Patents

Processo de fabricacao de pastas de celulose quimicotermomecanicas branqueadas

Info

Publication number
PT91128A
PT91128A PT91128A PT9112889A PT91128A PT 91128 A PT91128 A PT 91128A PT 91128 A PT91128 A PT 91128A PT 9112889 A PT9112889 A PT 9112889A PT 91128 A PT91128 A PT 91128A
Authority
PT
Portugal
Prior art keywords
chemicotermomecanic
branched
manufacture
cellulose pulp
bleaching
Prior art date
Application number
PT91128A
Other languages
English (en)
Other versions
PT91128B (pt
Inventor
Michel Devic
Original Assignee
Atochem
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 Atochem filed Critical Atochem
Publication of PT91128A publication Critical patent/PT91128A/pt
Publication of PT91128B publication Critical patent/PT91128B/pt

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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
    • D21C3/06—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites
    • 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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Seasonings (AREA)
  • Glass Compositions (AREA)
  • Adhesives Or Adhesive Processes (AREA)
PT91128A 1988-07-12 1989-07-11 Processo de fabricacao de pastas de celulose quimicotermomecanicas branqueadas PT91128B (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8809703A FR2634233B1 (fr) 1988-07-12 1988-07-12 Procede de fabrication de pates chimicothermomecaniques blanchies

Publications (2)

Publication Number Publication Date
PT91128A true PT91128A (pt) 1990-02-08
PT91128B PT91128B (pt) 1994-12-30

Family

ID=9368520

Family Applications (1)

Application Number Title Priority Date Filing Date
PT91128A PT91128B (pt) 1988-07-12 1989-07-11 Processo de fabricacao de pastas de celulose quimicotermomecanicas branqueadas

Country Status (12)

Country Link
EP (1) EP0351330B1 (pt)
JP (1) JPH0268377A (pt)
AT (1) ATE171741T1 (pt)
AU (1) AU616541B2 (pt)
CA (1) CA1335406C (pt)
DE (2) DE68928822T2 (pt)
ES (1) ES2012324T3 (pt)
FI (1) FI96522C (pt)
FR (1) FR2634233B1 (pt)
NO (1) NO176726C (pt)
NZ (1) NZ229902A (pt)
PT (1) PT91128B (pt)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2615874B1 (fr) * 1987-05-25 1992-02-21 Atochem Procede de preparation de pates chimicothermomecaniques
FR2675518B1 (fr) * 1991-04-17 1996-10-18 Atochem Procede de preparation de pate a papier a haut rendement et blanchie, a partir de copeaux de bois.
US20030062138A1 (en) * 2001-05-09 2003-04-03 Hache Maurice Joseph Albert Method for brightening mechanical pulps
JP4501329B2 (ja) * 2002-03-29 2010-07-14 日本製紙株式会社 グラビア印刷用塗工紙
CN101678557B (zh) * 2007-04-24 2014-07-02 巴斯夫欧洲公司 生产漂白的木材颗粒和浅色至白色木料的方法
US9932709B2 (en) 2013-03-15 2018-04-03 Ecolab Usa Inc. Processes and compositions for brightness improvement in paper production
US20100224333A1 (en) * 2009-03-09 2010-09-09 Prasad Duggirala Method and chemical composition to improve efficiency of mechanical pulp
EP2924166A1 (de) * 2014-03-25 2015-09-30 Basf Se Verfahren zur Herstellung von gebleichtem Holzfaserstoff

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE834808C (de) * 1950-08-31 1952-03-24 Degussa Verfahren zum Bleichen von mechanisch erzeugten, schwer bleichbaren Faserstoffen, insbesondere Holzschliff
US3284283A (en) * 1964-02-17 1966-11-08 Fmc Corp Production of wood pulps including treatment of cellulosic fibers with bisulfite ion followed by alkali metal borohydride
SE416481B (sv) * 1977-05-02 1981-01-05 Mo Och Domsjoe Ab Fofarande och anordning for behandling av vedflis for avlegsnande av tungmetaller och harts
CA1212505A (en) * 1984-07-17 1986-10-14 Rudy Vit Method, process and apparatus for converting wood, wood residue and or biomass into pulp
US4718980A (en) * 1985-12-30 1988-01-12 Weyerhaeuser Company Interstage treatment of mechanical pulp
FR2615874B1 (fr) * 1987-05-25 1992-02-21 Atochem Procede de preparation de pates chimicothermomecaniques
SE460124B (sv) * 1988-09-14 1989-09-11 Sunds Defibrator Saett foer framstaellning av kemimekanisk massa av loevved

Also Published As

Publication number Publication date
EP0351330A1 (fr) 1990-01-17
FI893372A0 (fi) 1989-07-11
AU3799989A (en) 1990-01-18
FR2634233A1 (fr) 1990-01-19
ES2012324T3 (es) 1998-11-16
NO176726C (no) 1995-05-16
ES2012324A4 (es) 1990-03-16
FI893372A (fi) 1990-01-13
NO892805L (no) 1990-01-15
EP0351330B1 (fr) 1998-09-30
JPH0268377A (ja) 1990-03-07
DE68928822D1 (de) 1998-11-05
DE68928822T2 (de) 1999-05-27
NZ229902A (en) 1991-09-25
JPH0250236B2 (pt) 1990-11-01
NO892805D0 (no) 1989-07-06
FR2634233B1 (fr) 1995-04-14
NO176726B (no) 1995-02-06
CA1335406C (fr) 1995-05-02
AU616541B2 (en) 1991-10-31
DE351330T1 (de) 1990-06-13
PT91128B (pt) 1994-12-30
ATE171741T1 (de) 1998-10-15
FI96522B (fi) 1996-03-29
FI96522C (fi) 1996-07-10

Similar Documents

Publication Publication Date Title
DE3061330D1 (en) Process for the delignification and bleaching of chemical and semichemical cellulose pulps
KR950700462A (ko) 휴지 잉크제거방법(Wastepaper deinking process)
DK0408128T3 (da) Absorberende papir omfattende polymermodificerede fiberpulper, og vådribningsproces til fremstilling heraf
BR9205696A (pt) Processo para o carregamento de fibras celulosicas com carbonato de calcio, polpa de papel carregada com carbonato de calcio, papel carregado e processo para a produçao de um papel carregado a partir de fibras celulosicas
SE9503595D0 (sv) Method of treating cellulose pulps
PT91128A (pt) Processo de fabricacao de pastas de celulose quimicotermomecanicas branqueadas
CA2111519A1 (en) Oxygen/ozone/peracetic acid delignification and bleaching of cellulosic pulps
FI934036A (fi) Menetelmä massan valkaisemiseksi kloorivapailla kemikaaleilla
BR9204097A (pt) Processo para obtener melhorada,seletividade de deslignificacao de polpa durante a deslignificacao com oxigenio,de elevada consistencia
AU1406788A (en) Pulp bleaching process
FI906076A (fi) Menetelmä kemiallisten selluloosamassojen valkaisemiseksi valkaistujen absorboivien massojen valmistamiseksi
FI882448A (fi) Menetelmä valkaistun kemitermomekaanisen massan valmistamiseksi
SE504340E (sv) Förfarande för delignifiering/blekning av lignininnehållande cellulosamassa
FR2398839A1 (fr) Procede de fabrication de pates papetieres chimiques
SU1447958A1 (ru) Способ обработки целлюлозы после варки
FR2367860A1 (fr) Procede de preparation de pate de bois
RU93031029A (ru) Способ получения беленой целлюлозы
PT881326E (pt) Processo para a preparacao de celuloses speciais branqueadas
NO920829D0 (no) Fremgangsmaate for bleking av cellulose i alifatiske monokarboksylsyrer
BG51214A1 (en) Method for cellulose alkaline cooking

Legal Events

Date Code Title Description
FG3A Patent granted, date of granting

Effective date: 19940615

MM3A Annulment or lapse

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 20021231