FI43808B - - Google Patents
Info
- Publication number
- FI43808B FI43808B FI1492/64A FI149264A FI43808B FI 43808 B FI43808 B FI 43808B FI 1492/64 A FI1492/64 A FI 1492/64A FI 149264 A FI149264 A FI 149264A FI 43808 B FI43808 B FI 43808B
- Authority
- FI
- Finland
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
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
- D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
- D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process
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 |
|---|---|---|---|
| CA879968 | 1963-07-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FI43808B true FI43808B (de) | 1971-03-01 |
| FI43808C FI43808C (fi) | 1977-09-27 |
Family
ID=4141767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI641492A FI43808C (fi) | 1963-07-12 | 1964-07-11 | Menetelmä selluloosamateriaalin valkaisemiseksi veteen lietettynä |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US3536577A (de) |
| JP (1) | JPS5235761B1 (de) |
| AT (1) | AT265008B (de) |
| CH (1) | CH486596A (de) |
| DE (1) | DE1546226B1 (de) |
| ES (1) | ES301960A1 (de) |
| FI (1) | FI43808C (de) |
| FR (1) | FR1407286A (de) |
| GB (1) | GB1007697A (de) |
| NL (2) | NL6407863A (de) |
| OA (1) | OA00199A (de) |
| SE (1) | SE301583B (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE334286B (de) * | 1968-12-05 | 1971-04-19 | Mo Och Domsjoe Ab | |
| SE391750B (sv) * | 1974-03-21 | 1977-02-28 | Kamyr Ab | Sett att i ett kerl kontinuerligt behandla cellulosamassa med klor |
| JPS5422857U (de) * | 1977-07-14 | 1979-02-15 | ||
| US4325783A (en) * | 1978-03-30 | 1982-04-20 | Erco Industries Limited | Bleaching procedure using chlorine dioxide and chlorine solutions |
| JPS5542838U (de) * | 1978-09-13 | 1980-03-19 | ||
| US4299653A (en) * | 1979-04-16 | 1981-11-10 | Erco Industries Limited | Method of bleaching pulp with an aqueous solution of chlorine dioxide and chlorine followed by a chlorine solution |
| EP1244840A4 (de) * | 1999-06-08 | 2003-04-16 | Eastern Pulp And Paper Corp | Sauerstoff-hochdruck-bleichung einer pulpe |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2494542A (en) * | 1946-05-02 | 1950-01-17 | Niagara Alkali Company | Method of bleaching pulp |
| GB751854A (en) * | 1952-03-26 | 1956-07-04 | Tennants Cons Ltd | Improvements relating to the bleaching of cellulose pulps |
| BE518419A (de) * | 1952-03-26 | |||
| US3020196A (en) * | 1960-08-05 | 1962-02-06 | Allied Chem | Production of high brightness high strength wood pulps |
-
0
- NL NL134770D patent/NL134770C/xx active
-
1964
- 1964-07-08 CH CH894664A patent/CH486596A/de not_active IP Right Cessation
- 1964-07-08 FR FR981098A patent/FR1407286A/fr not_active Expired
- 1964-07-10 DE DE19641546226 patent/DE1546226B1/de active Pending
- 1964-07-10 NL NL6407863A patent/NL6407863A/xx unknown
- 1964-07-10 SE SE8508/64A patent/SE301583B/xx unknown
- 1964-07-10 AT AT597864A patent/AT265008B/de active
- 1964-07-11 ES ES0301960A patent/ES301960A1/es not_active Expired
- 1964-07-11 FI FI641492A patent/FI43808C/fi active
- 1964-07-13 JP JP39039203A patent/JPS5235761B1/ja active Pending
- 1964-07-13 GB GB28752/64A patent/GB1007697A/en not_active Expired
- 1964-08-18 OA OA50265A patent/OA00199A/xx unknown
-
1968
- 1968-12-02 US US780593A patent/US3536577A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CH486596A (de) | 1970-02-28 |
| FR1407286A (fr) | 1965-07-30 |
| SE301583B (de) | 1968-06-10 |
| FI43808C (fi) | 1977-09-27 |
| NL134770C (de) | |
| GB1007697A (en) | 1965-10-22 |
| NL6407863A (de) | 1965-01-13 |
| US3536577A (en) | 1970-10-27 |
| JPS5235761B1 (de) | 1977-09-10 |
| DE1546226B1 (de) | 1970-11-26 |
| ES301960A1 (es) | 1965-01-16 |
| AT265008B (de) | 1968-09-25 |
| OA00199A (fr) | 1966-03-15 |