FR2350421B1 - - Google Patents
Info
- Publication number
- FR2350421B1 FR2350421B1 FR7713425A FR7713425A FR2350421B1 FR 2350421 B1 FR2350421 B1 FR 2350421B1 FR 7713425 A FR7713425 A FR 7713425A FR 7713425 A FR7713425 A FR 7713425A FR 2350421 B1 FR2350421 B1 FR 2350421B1
- Authority
- FR
- France
- 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
- D21C9/1057—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)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA251,752A CA1070909A (en) | 1976-05-04 | 1976-05-04 | Nitrogen dioxide-oxygen delignification |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2350421A1 FR2350421A1 (fr) | 1977-12-02 |
| FR2350421B1 true FR2350421B1 (da) | 1982-08-13 |
Family
ID=4105864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7713425A Granted FR2350421A1 (fr) | 1976-05-04 | 1977-05-03 | Procede de delignification utilisant successivement du bioxyde d'azote et de l'oxygene |
Country Status (12)
| Country | Link |
|---|---|
| JP (1) | JPS52134690A (da) |
| AU (1) | AU498646B2 (da) |
| BR (1) | BR7702713A (da) |
| CA (1) | CA1070909A (da) |
| DE (1) | DE2717257A1 (da) |
| ES (1) | ES458434A1 (da) |
| FI (1) | FI771383A (da) |
| FR (1) | FR2350421A1 (da) |
| NO (1) | NO771297L (da) |
| NZ (1) | NZ183555A (da) |
| SE (1) | SE7705136L (da) |
| ZA (1) | ZA771424B (da) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE441192B (sv) * | 1980-05-27 | 1985-09-16 | Mo Och Domsjoe Ab | Forfarande for delignifiering av kemisk cellulosamassa med syrgas i nervaro av ett eller flera neutralisationsmedel |
| SE421938B (sv) * | 1980-06-05 | 1982-02-08 | Mo Och Domsjoe Ab | Forfarande for behandling av cellulosamassa med kveveoxider fore syrgasblekning |
| SE445122B (sv) * | 1980-12-17 | 1986-06-02 | Mo Och Domsjoe Ab | Forfarande for delignifiering av cellulosamassa i nervaro av kvevedioxid |
| 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 |
| SE450394B (sv) * | 1981-12-30 | 1987-06-22 | Mo Och Domsjoe Ab | Forfarande for blekning av ligninhaltig cellulosamassa |
| JP2002302888A (ja) * | 2001-04-05 | 2002-10-18 | Oji Paper Co Ltd | 漂白パルプの製造方法 |
| FI20115754A0 (fi) * | 2011-03-22 | 2011-07-15 | Andritz Oy | Menetelmä ja järjestely kemiallisen massan käsittelemiseksi |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1505070A (en) * | 1974-06-11 | 1978-03-22 | Canadian Ind | Process for bleaching of lignocellulosic material |
-
1976
- 1976-05-04 CA CA251,752A patent/CA1070909A/en not_active Expired
-
1977
- 1977-03-09 ZA ZA00771424A patent/ZA771424B/xx unknown
- 1977-03-09 NZ NZ183555A patent/NZ183555A/xx unknown
- 1977-03-10 AU AU23111/77A patent/AU498646B2/en not_active Expired
- 1977-04-14 NO NO771297A patent/NO771297L/no unknown
- 1977-04-19 DE DE19772717257 patent/DE2717257A1/de not_active Withdrawn
- 1977-04-28 BR BR7702713A patent/BR7702713A/pt not_active IP Right Cessation
- 1977-04-29 FI FI771383A patent/FI771383A/fi not_active Application Discontinuation
- 1977-05-02 JP JP5003677A patent/JPS52134690A/ja active Pending
- 1977-05-03 SE SE7705136A patent/SE7705136L/xx unknown
- 1977-05-03 FR FR7713425A patent/FR2350421A1/fr active Granted
- 1977-05-04 ES ES458434A patent/ES458434A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NZ183555A (en) | 1978-11-13 |
| NO771297L (no) | 1977-11-07 |
| SE7705136L (sv) | 1977-11-05 |
| FR2350421A1 (fr) | 1977-12-02 |
| BR7702713A (pt) | 1978-03-21 |
| ES458434A1 (es) | 1978-03-16 |
| AU2311177A (en) | 1978-09-14 |
| FI771383A (da) | 1977-11-05 |
| CA1070909A (en) | 1980-02-05 |
| AU498646B2 (en) | 1979-03-22 |
| ZA771424B (en) | 1978-02-22 |
| DE2717257A1 (de) | 1977-11-17 |
| JPS52134690A (en) | 1977-11-11 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |