FR2426767B1 - - Google Patents
Info
- Publication number
- FR2426767B1 FR2426767B1 FR7912874A FR7912874A FR2426767B1 FR 2426767 B1 FR2426767 B1 FR 2426767B1 FR 7912874 A FR7912874 A FR 7912874A FR 7912874 A FR7912874 A FR 7912874A FR 2426767 B1 FR2426767 B1 FR 2426767B1
- 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
- D21C9/1026—Other features in bleaching processes
- D21C9/1042—Use of chelating agents
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Cereal-Derived Products (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2290178 | 1978-05-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2426767A1 FR2426767A1 (fr) | 1979-12-21 |
| FR2426767B1 true FR2426767B1 (no) | 1985-03-22 |
Family
ID=10186899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7912874A Granted FR2426767A1 (fr) | 1978-05-26 | 1979-05-21 | Blanchiment de pate a papier |
Country Status (7)
| Country | Link |
|---|---|
| AU (1) | AU528265B2 (no) |
| CA (1) | CA1120210A (no) |
| FI (1) | FI71177C (no) |
| FR (1) | FR2426767A1 (no) |
| NO (1) | NO153309C (no) |
| SE (1) | SE7904430L (no) |
| ZA (1) | ZA792563B (no) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE434284B (sv) * | 1980-05-07 | 1984-07-16 | Mo Och Domsjoe Ab | Forfarande vid syrgasdelignifiering av kemiskt uppsluten cellulosamassa varvid aromatiska diaminer tillfores |
| 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 |
| CN102229619A (zh) * | 2011-04-26 | 2011-11-02 | 河南清水源科技股份有限公司 | 四乙烯五胺七亚甲基膦酸及其生产工艺 |
| CA3075029A1 (en) | 2017-09-11 | 2019-03-14 | Solenis Technologies, L.P. | Method for enhanced oxygen delignification of chemical wood pulps |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE785964A (fr) * | 1971-07-07 | 1973-01-08 | Monsanto Co | Derives condenses de polyalkylenepolyamines |
-
1979
- 1979-05-21 SE SE7904430A patent/SE7904430L/ not_active Application Discontinuation
- 1979-05-21 AU AU47233/79A patent/AU528265B2/en not_active Ceased
- 1979-05-21 FR FR7912874A patent/FR2426767A1/fr active Granted
- 1979-05-25 FI FI791681A patent/FI71177C/fi not_active IP Right Cessation
- 1979-05-25 ZA ZA792563A patent/ZA792563B/xx unknown
- 1979-05-25 NO NO791728A patent/NO153309C/no unknown
- 1979-05-25 CA CA000328345A patent/CA1120210A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CA1120210A (en) | 1982-03-23 |
| FI791681A (fi) | 1979-11-27 |
| FR2426767A1 (fr) | 1979-12-21 |
| ZA792563B (en) | 1980-10-29 |
| NO153309C (no) | 1986-02-19 |
| AU4723379A (en) | 1979-11-29 |
| AU528265B2 (en) | 1983-04-21 |
| FI71177B (fi) | 1986-08-14 |
| NO153309B (no) | 1985-11-11 |
| SE7904430L (sv) | 1979-11-27 |
| FI71177C (fi) | 1986-11-24 |
| NO791728L (no) | 1979-11-27 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |