ES8304242A1 - Procedimiento mejorado para la preparacion de pastas papeleras quimicas. - Google Patents

Procedimiento mejorado para la preparacion de pastas papeleras quimicas.

Info

Publication number
ES8304242A1
ES8304242A1 ES506891A ES506891A ES8304242A1 ES 8304242 A1 ES8304242 A1 ES 8304242A1 ES 506891 A ES506891 A ES 506891A ES 506891 A ES506891 A ES 506891A ES 8304242 A1 ES8304242 A1 ES 8304242A1
Authority
ES
Spain
Prior art keywords
chips
woods
defibrated
paper pulp
relates
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
ES506891A
Other languages
English (en)
Other versions
ES506891A0 (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.)
Produits Chimiques Ugine Kuhlmann
Ugine Kuhlmann SA
Original Assignee
Produits Chimiques Ugine Kuhlmann
Ugine Kuhlmann 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 Produits Chimiques Ugine Kuhlmann, Ugine Kuhlmann SA filed Critical Produits Chimiques Ugine Kuhlmann
Publication of ES8304242A1 publication Critical patent/ES8304242A1/es
Publication of ES506891A0 publication Critical patent/ES506891A0/es
Granted 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/26—Multistage processes

Landscapes

  • Paper (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

PROCEDIMIENTO PARA LA PREPARACION DE PASTAS PAPELERAS QUIMICAS. SE HACE COCER VIRUTAS DE MADERA EN UN LICOR ALCALINO QUE CONTIENE UN COMPUESTO AZUFRADO, PARANDOSE ESTA COCCION EN TEMPERATURA CUANDO LAS VIRUTAS PRESENTAN UN PORCENTAJE RESIDUAL DE LIGNINA CORRESPONDIENTE A UN INDICE KAPPA COMPRENDIDO ENTRE 45 Y 100 PARA LAS MADERAS RESINOSAS Y 30 Y 50 PARA LAS MADERAS FRONDOSAS. SE DESFIBRAN LAS VIRUTAS ASI TRATADAS, TERMINANDOSE LA COCCION DE DICHAS VIRUTAS DESFIBRADAS POR MEDIO DE UNA SOLUCION ALCALINA QUE CONTIENE DE 0,1 A 1,5% EN PESO DE PEROXIDO CON RELACION AL PESO SECO DEL MATERIAL DESFIBRADO.
ES506891A 1980-11-06 1981-11-05 Procedimiento mejorado para la preparacion de pastas papeleras quimicas. Granted ES506891A0 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8024075A FR2493365A1 (fr) 1980-11-06 1980-11-06 Procede pour la fabrication de pate papetiere chimique et pate ainsi obtenue

Publications (2)

Publication Number Publication Date
ES8304242A1 true ES8304242A1 (es) 1983-02-16
ES506891A0 ES506891A0 (es) 1983-02-16

Family

ID=9247897

Family Applications (1)

Application Number Title Priority Date Filing Date
ES506891A Granted ES506891A0 (es) 1980-11-06 1981-11-05 Procedimiento mejorado para la preparacion de pastas papeleras quimicas.

Country Status (14)

Country Link
JP (1) JPS57106790A (es)
AT (1) AT376716B (es)
BE (1) BE890812A (es)
BR (1) BR8107190A (es)
CA (1) CA1162008A (es)
CH (1) CH645146A5 (es)
DE (1) DE3143523A1 (es)
ES (1) ES506891A0 (es)
FI (1) FI76129C (es)
FR (1) FR2493365A1 (es)
IN (1) IN156251B (es)
IT (1) IT1144850B (es)
NO (1) NO162776C (es)
SE (1) SE460855B (es)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5526239B2 (es) * 1972-12-14 1980-07-11
JPS51116202A (en) * 1975-04-02 1976-10-13 Sanyo Kokusaku Pulp Co Process for making pulp with high yield
BE869153A (fr) * 1977-07-29 1979-01-22 Ugine Kuhlmann Procede de fabrication de pates papetieres chimiques
FR2398839A1 (fr) * 1977-07-29 1979-02-23 Centre Tech Ind Papier Procede de fabrication de pates papetieres chimiques

Also Published As

Publication number Publication date
FI76129B (fi) 1988-05-31
CH645146A5 (fr) 1984-09-14
NO162776C (no) 1990-02-14
IN156251B (es) 1985-06-08
JPS57106790A (en) 1982-07-02
DE3143523A1 (de) 1982-07-08
NO813747L (no) 1982-05-07
SE8106501L (sv) 1982-05-07
ES506891A0 (es) 1983-02-16
FI76129C (fi) 1988-09-09
FR2493365B1 (es) 1984-05-11
ATA469981A (de) 1984-05-15
JPH0380915B2 (es) 1991-12-26
NO162776B (no) 1989-11-06
BR8107190A (pt) 1982-07-20
DE3143523C2 (es) 1990-01-18
SE460855B (sv) 1989-11-27
AT376716B (de) 1984-12-27
BE890812A (fr) 1982-04-21
FR2493365A1 (fr) 1982-05-07
CA1162008A (fr) 1984-02-14
IT1144850B (it) 1986-10-29
IT8168398A0 (it) 1981-10-28
FI813489L (fi) 1982-05-07

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19970519