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
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.
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)
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 |
FR2398839A1 (fr) * | 1977-07-29 | 1979-02-23 | Centre Tech Ind Papier | Procede de fabrication de pates papetieres chimiques |
BE869153A (fr) * | 1977-07-29 | 1979-01-22 | Ugine Kuhlmann | Procede de fabrication de pates papetieres chimiques |
-
1980
- 1980-11-06 FR FR8024075A patent/FR2493365A1/fr active Granted
-
1981
- 1981-10-21 BE BE0/206302A patent/BE890812A/fr not_active IP Right Cessation
- 1981-10-28 IT IT68398/81A patent/IT1144850B/it active
- 1981-11-03 AT AT0469981A patent/AT376716B/de not_active IP Right Cessation
- 1981-11-03 DE DE19813143523 patent/DE3143523A1/de active Granted
- 1981-11-03 SE SE8106501A patent/SE460855B/sv not_active IP Right Cessation
- 1981-11-05 CH CH709381A patent/CH645146A5/fr not_active IP Right Cessation
- 1981-11-05 ES ES506891A patent/ES506891A0/es active Granted
- 1981-11-05 FI FI813489A patent/FI76129C/fi not_active IP Right Cessation
- 1981-11-05 CA CA000389537A patent/CA1162008A/fr not_active Expired
- 1981-11-05 JP JP56176557A patent/JPS57106790A/ja active Granted
- 1981-11-05 BR BR8107190A patent/BR8107190A/pt not_active IP Right Cessation
- 1981-11-05 NO NO813747A patent/NO162776C/no unknown
-
1982
- 1982-01-06 IN IN25/CAL/82A patent/IN156251B/en unknown
Also Published As
Publication number | Publication date |
---|---|
NO162776C (no) | 1990-02-14 |
SE8106501L (sv) | 1982-05-07 |
IT1144850B (it) | 1986-10-29 |
JPS57106790A (en) | 1982-07-02 |
DE3143523A1 (de) | 1982-07-08 |
JPH0380915B2 (es) | 1991-12-26 |
IN156251B (es) | 1985-06-08 |
ES506891A0 (es) | 1983-02-16 |
NO813747L (no) | 1982-05-07 |
IT8168398A0 (it) | 1981-10-28 |
FR2493365B1 (es) | 1984-05-11 |
FR2493365A1 (fr) | 1982-05-07 |
AT376716B (de) | 1984-12-27 |
SE460855B (sv) | 1989-11-27 |
BR8107190A (pt) | 1982-07-20 |
CH645146A5 (fr) | 1984-09-14 |
FI76129B (fi) | 1988-05-31 |
NO162776B (no) | 1989-11-06 |
FI813489L (fi) | 1982-05-07 |
BE890812A (fr) | 1982-04-21 |
ATA469981A (de) | 1984-05-15 |
CA1162008A (fr) | 1984-02-14 |
FI76129C (fi) | 1988-09-09 |
DE3143523C2 (es) | 1990-01-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19970519 |