JPS522003B2 - - Google Patents
Info
- Publication number
- JPS522003B2 JPS522003B2 JP50069788A JP6978875A JPS522003B2 JP S522003 B2 JPS522003 B2 JP S522003B2 JP 50069788 A JP50069788 A JP 50069788A JP 6978875 A JP6978875 A JP 6978875A JP S522003 B2 JPS522003 B2 JP S522003B2
- Authority
- JP
- Japan
- 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
- 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
- D21C9/1063—Bleaching ; Apparatus therefor with compounds not otherwise provided for, e.g. activated gases
-
- 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
- D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB25845/74A GB1505070A (en) | 1974-06-11 | 1974-06-11 | Process for bleaching of lignocellulosic material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5132802A JPS5132802A (fi) | 1976-03-19 |
| JPS522003B2 true JPS522003B2 (fi) | 1977-01-19 |
Family
ID=10234280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50069788A Expired JPS522003B2 (fi) | 1974-06-11 | 1975-06-11 |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS522003B2 (fi) |
| BR (1) | BR7503680A (fi) |
| CA (1) | CA1045759A (fi) |
| DE (1) | DE2526084C2 (fi) |
| ES (1) | ES438433A1 (fi) |
| FI (1) | FI751734A (fi) |
| FR (1) | FR2274729A1 (fi) |
| GB (1) | GB1505070A (fi) |
| NO (1) | NO147761C (fi) |
| SE (1) | SE7506646L (fi) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1070909A (en) * | 1976-05-04 | 1980-02-05 | Canadian Industries Limited | Nitrogen dioxide-oxygen delignification |
| SE421938B (sv) * | 1980-06-05 | 1982-02-08 | Mo Och Domsjoe Ab | Forfarande for behandling av cellulosamassa med kveveoxider fore syrgasblekning |
| SE425674B (sv) * | 1981-03-23 | 1982-10-25 | Mo Och Domsjoe Ab | Forfarande for delignifiering av cellulosamassa med kvevedioxid och syrgas |
| DE3118384C1 (de) * | 1981-05-09 | 1982-11-11 | Mannesmann AG, 4000 Düsseldorf | Verfahren zum Bleichen von chemisch hergestelltem Zellstoff mit Ozon |
| SE448006B (sv) * | 1981-09-21 | 1987-01-12 | Mo Och Domsjoe Ab | Forfarande for blekning av cellulosamassa innefattande ett aktiveringssteg med kveveoxider |
| SE450393B (sv) * | 1981-10-27 | 1987-06-22 | Mo Och Domsjoe Ab | Forfarande for behandling av ved med kveveoxider och syrgas fore sulfatkokning |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE204460C (fi) * | ||||
| DE212838C (fi) * | ||||
| DE391713C (de) * | 1922-12-12 | 1924-03-11 | Paul Krais Dr | Verfahren zum Aufschliessen von Stroh, Schilf u. dgl. |
-
1974
- 1974-06-11 GB GB25845/74A patent/GB1505070A/en not_active Expired
-
1975
- 1975-05-30 CA CA228,164A patent/CA1045759A/en not_active Expired
- 1975-06-09 NO NO752025A patent/NO147761C/no unknown
- 1975-06-10 FI FI751734A patent/FI751734A/fi not_active Application Discontinuation
- 1975-06-10 SE SE7506646A patent/SE7506646L/xx unknown
- 1975-06-10 FR FR7518079A patent/FR2274729A1/fr active Granted
- 1975-06-11 BR BR4721/75D patent/BR7503680A/pt unknown
- 1975-06-11 ES ES438433A patent/ES438433A1/es not_active Expired
- 1975-06-11 JP JP50069788A patent/JPS522003B2/ja not_active Expired
- 1975-06-11 DE DE2526084A patent/DE2526084C2/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NO147761C (no) | 1983-06-08 |
| DE2526084A1 (de) | 1976-01-02 |
| GB1505070A (en) | 1978-03-22 |
| ES438433A1 (es) | 1977-05-16 |
| BR7503680A (pt) | 1976-06-29 |
| SE7506646L (sv) | 1975-12-12 |
| FR2274729A1 (fr) | 1976-01-09 |
| CA1045759A (en) | 1979-01-09 |
| AU8201275A (en) | 1976-12-16 |
| FI751734A (fi) | 1975-12-12 |
| FR2274729B1 (fi) | 1978-09-22 |
| NO752025L (fi) | 1975-12-12 |
| NO147761B (no) | 1983-02-28 |
| JPS5132802A (fi) | 1976-03-19 |
| DE2526084C2 (de) | 1981-11-26 |