FI85725C - Foerfarande foer delignifiering av cellulosamaterial. - Google Patents

Foerfarande foer delignifiering av cellulosamaterial. Download PDF

Info

Publication number
FI85725C
FI85725C FI863193A FI863193A FI85725C FI 85725 C FI85725 C FI 85725C FI 863193 A FI863193 A FI 863193A FI 863193 A FI863193 A FI 863193A FI 85725 C FI85725 C FI 85725C
Authority
FI
Finland
Prior art keywords
cooking
process according
cellulose material
hydrogen peroxide
carried out
Prior art date
Application number
FI863193A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI863193A (fi
FI85725B (fi
FI863193A0 (fi
Inventor
Josef S Gratzl
Original Assignee
Interox Sa
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 Interox Sa filed Critical Interox Sa
Publication of FI863193A0 publication Critical patent/FI863193A0/fi
Publication of FI863193A publication Critical patent/FI863193A/fi
Application granted granted Critical
Publication of FI85725B publication Critical patent/FI85725B/fi
Publication of FI85725C publication Critical patent/FI85725C/fi

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
    • D21C3/22—Other features of pulping processes
    • D21C3/26—Multistage processes

Landscapes

  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Paper (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • External Artificial Organs (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Organic Insulating Materials (AREA)
  • Dental Preparations (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Materials For Medical Uses (AREA)
  • Cleaning Or Drying Semiconductors (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Detergent Compositions (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
FI863193A 1985-08-05 1986-08-05 Foerfarande foer delignifiering av cellulosamaterial. FI85725C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US76272485A 1985-08-05 1985-08-05
US76272485 1985-08-05

Publications (4)

Publication Number Publication Date
FI863193A0 FI863193A0 (fi) 1986-08-05
FI863193A FI863193A (fi) 1987-02-06
FI85725B FI85725B (fi) 1992-02-14
FI85725C true FI85725C (fi) 1992-05-25

Family

ID=25065878

Family Applications (1)

Application Number Title Priority Date Filing Date
FI863193A FI85725C (fi) 1985-08-05 1986-08-05 Foerfarande foer delignifiering av cellulosamaterial.

Country Status (14)

Country Link
EP (1) EP0213376B1 (no)
JP (1) JPH0742669B2 (no)
AT (1) ATE57401T1 (no)
AU (1) AU591508B2 (no)
BR (1) BR8603671A (no)
CA (1) CA1282911C (no)
DE (1) DE3674866D1 (no)
ES (1) ES2000831A6 (no)
FI (1) FI85725C (no)
IN (1) IN167959B (no)
NO (1) NO168375C (no)
NZ (1) NZ217001A (no)
PT (1) PT83117B (no)
YU (1) YU45352B (no)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU591509B2 (en) * 1985-08-05 1989-12-07 Interox Societe Anonyme Process for the delignification of cellulosic substances
FI122654B (fi) * 1997-12-08 2012-05-15 Ovivo Luxembourg Sarl Menetelmä paperisellumassan valmistamiseksi
BRPI0810975B1 (pt) * 2007-05-23 2018-12-26 Alberta Res Council método para a remoção da hemicelutose das fibras celutósicas usando uma solução de amônia e peróxido de hidrogênio

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE873649C (de) * 1944-08-25 1953-04-16 Degussa Verfahren zur Herstellung von ungebleichten Zellstoffen mit hohem Weissgehalt
SE373896B (no) * 1972-07-05 1975-02-17 Mo Och Domsjoe Ab
SE380298B (sv) * 1974-03-14 1975-11-03 Mo Forfarande for delignifiering genom syrgas-alkalibehandling av lignocelluosahaltigt material
US4486267A (en) * 1983-11-14 1984-12-04 Mead Corporation Chemithermomechanical pulping process employing separate alkali and sulfite treatments
AU591509B2 (en) * 1985-08-05 1989-12-07 Interox Societe Anonyme Process for the delignification of cellulosic substances

Also Published As

Publication number Publication date
ATE57401T1 (de) 1990-10-15
YU137086A (en) 1987-10-31
NO168375C (no) 1992-02-12
NZ217001A (en) 1989-01-27
JPH0742669B2 (ja) 1995-05-10
FI863193A (fi) 1987-02-06
JPS6297991A (ja) 1987-05-07
PT83117A (fr) 1986-09-01
YU45352B (en) 1992-05-28
FI85725B (fi) 1992-02-14
AU591508B2 (en) 1989-12-07
AU6054386A (en) 1987-02-12
CA1282911C (fr) 1991-04-16
BR8603671A (pt) 1987-03-10
NO863132D0 (no) 1986-08-04
ES2000831A6 (es) 1988-03-16
PT83117B (pt) 1988-10-14
NO863132L (no) 1987-02-06
FI863193A0 (fi) 1986-08-05
EP0213376B1 (fr) 1990-10-10
EP0213376A1 (fr) 1987-03-11
IN167959B (no) 1991-01-12
NO168375B (no) 1991-11-04
DE3674866D1 (de) 1990-11-15

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Legal Events

Date Code Title Description
MM Patent lapsed

Owner name: INTEROX (SOCIETE ANONYME)