ES8606557A1 - Procedimiento para preparar pastas papeleras quimicas con vistas a su blanqueo - Google Patents

Procedimiento para preparar pastas papeleras quimicas con vistas a su blanqueo

Info

Publication number
ES8606557A1
ES8606557A1 ES548166A ES548166A ES8606557A1 ES 8606557 A1 ES8606557 A1 ES 8606557A1 ES 548166 A ES548166 A ES 548166A ES 548166 A ES548166 A ES 548166A ES 8606557 A1 ES8606557 A1 ES 8606557A1
Authority
ES
Spain
Prior art keywords
bleaching
view
preparing chemical
wood pulps
chemical wood
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.)
Expired
Application number
ES548166A
Other languages
English (en)
Other versions
ES548166A0 (es
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.)
Arkema France SA
Original Assignee
Atochem 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9309092&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES8606557(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Atochem SA filed Critical Atochem SA
Publication of ES8606557A1 publication Critical patent/ES8606557A1/es
Publication of ES548166A0 publication Critical patent/ES548166A0/es
Expired 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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)

Abstract

PROCEDIMIENTO PARA LA PREPARACION DE PASTAS PAPELERAS QUIMICAS PARA SU BLANQUEADO, DEL TIPO EN EL QUE DICHAS PASTAS SE TRATAN CON CLORO Y A CONTINUACION CON UN COMPUESTO OXIGENADO. CARACTERIZADO PORQUE EL PRETRATAMIENTO CON CLORO SE EFECTUA CON UNA PASTA QUE TIENE UNA CONSISTENCIA COMPRENDIDA ENTRE 5 Y 15% Y A UNA TEMPERATURA COMPRENDIDA ENTRE 50 Y 100 GRADOS, Y CON UNA CONCENTRACION DE CLORO COMPRENDIDA ENTRE 0,5 Y UN 2%; Y PORQUE EL COMPUESTO OXIGENADO UTILIZADO ES PEROXIDO DE HIDROGENO, EL CUAL SE HACE REACCIONAR A UNA TEMPERATURA PROXIMA A LOS 120 GRADOS.
ES548166A 1984-10-25 1985-10-24 Procedimiento para preparar pastas papeleras quimicas con vistas a su blanqueo Expired ES8606557A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8416518A FR2572431B1 (fr) 1984-10-25 1984-10-25 Procede pour la preparation des pates papetieres chimiques en vue du blanchiment.

Publications (2)

Publication Number Publication Date
ES8606557A1 true ES8606557A1 (es) 1986-04-01
ES548166A0 ES548166A0 (es) 1986-04-01

Family

ID=9309092

Family Applications (1)

Application Number Title Priority Date Filing Date
ES548166A Expired ES8606557A1 (es) 1984-10-25 1985-10-24 Procedimiento para preparar pastas papeleras quimicas con vistas a su blanqueo

Country Status (9)

Country Link
EP (1) EP0180529B2 (es)
JP (1) JPS61102495A (es)
AT (1) ATE35433T1 (es)
AU (1) AU576394B2 (es)
CA (1) CA1273755A (es)
DE (2) DE180529T1 (es)
ES (1) ES8606557A1 (es)
FI (1) FI82726C (es)
FR (1) FR2572431B1 (es)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1544216A (en) * 1921-08-11 1925-06-30 Donald J Campbell Molding apparatus
GB1262655A (en) * 1968-09-20 1972-02-02 Canadian Ind Bleaching of wood pulp
JPS51102103A (en) * 1975-03-05 1976-09-09 Nippon Parupu Kogyo Kk Ryusanenhoparupuno hyohakuhoho
DE2538673C2 (de) * 1975-08-30 1986-01-16 Degussa Ag, 6000 Frankfurt Bleichaufschluß von Zellstoff mit erheblich reduziertem Chloreinsatz
US4402788A (en) * 1982-04-26 1983-09-06 Champion International Corporation Process for bleaching wood pulp with hydrogen peroxide

Also Published As

Publication number Publication date
EP0180529B2 (fr) 1992-04-08
ES548166A0 (es) 1986-04-01
FI854148A0 (fi) 1985-10-23
EP0180529B1 (fr) 1988-06-29
FR2572431A1 (fr) 1986-05-02
FI854148L (fi) 1986-04-26
EP0180529A1 (fr) 1986-05-07
DE180529T1 (de) 1986-12-18
CA1273755A (fr) 1990-09-11
FI82726B (fi) 1990-12-31
AU576394B2 (en) 1988-08-25
ATE35433T1 (de) 1988-07-15
DE3563548D1 (en) 1988-08-04
FR2572431B1 (fr) 1987-12-04
JPS61102495A (ja) 1986-05-21
AU4910885A (en) 1986-05-29
FI82726C (fi) 1991-04-10

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20010402