FI43809B - - Google Patents
Info
- Publication number
- FI43809B FI43809B FI0351/66A FI35166A FI43809B FI 43809 B FI43809 B FI 43809B FI 0351/66 A FI0351/66 A FI 0351/66A FI 35166 A FI35166 A FI 35166A FI 43809 B FI43809 B FI 43809B
- 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
- D21C9/1026—Other features in bleaching processes
- D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US43462765A | 1965-02-23 | 1965-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FI43809B true FI43809B (sv) | 1971-03-01 |
Family
ID=23724985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI0351/66A FI43809B (sv) | 1965-02-23 | 1966-02-12 |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3507743A (sv) |
| BE (1) | BE676663A (sv) |
| DE (1) | DE1546253A1 (sv) |
| DK (1) | DK109015C (sv) |
| ES (1) | ES322925A1 (sv) |
| FI (1) | FI43809B (sv) |
| GB (1) | GB1095280A (sv) |
| NL (1) | NL6601601A (sv) |
| SE (1) | SE314580B (sv) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4002526A (en) * | 1975-10-10 | 1977-01-11 | International Paper Company | Oxygen-alkali delignification of low consistency wood pulp |
| US4244780A (en) * | 1979-11-15 | 1981-01-13 | Nalco Chemical Company | Use of thiourea dioxide in pulp bleaching processes to preserve pulp strength and aid in brightness |
| US4675076A (en) * | 1986-10-01 | 1987-06-23 | Ppg Industries, Inc. | Method for brightening pulp |
| US5338402A (en) * | 1987-05-25 | 1994-08-16 | Societe Atochem | Process for preparing a bleached chemithermomechanical pulp |
| US5958184A (en) * | 1992-06-10 | 1999-09-28 | Mitsubishi Gas Chemical Company Inc. | Process for producing thiourea dioxide |
| FI105701B (sv) * | 1995-10-20 | 2000-09-29 | Ahlstrom Machinery Oy | Förfarande och anordning för behandling av massa |
| US6899790B2 (en) * | 2000-03-06 | 2005-05-31 | Georgia-Pacific Corporation | Method of providing papermaking fibers with durable curl |
| US6627041B2 (en) * | 2000-03-06 | 2003-09-30 | Georgia-Pacific Corporation | Method of bleaching and providing papermaking fibers with durable curl |
| US6428653B1 (en) | 2000-12-04 | 2002-08-06 | West Fraser Timber Co. Ltd. | Method of bleaching with formamidine sulfinic acid using a reducing agent to eliminate residual peroxide |
| WO2006068964A2 (en) * | 2004-12-21 | 2006-06-29 | Hercules Incorporated | Reactive cationic resins for use as dry and wet strength agents in sulfite ion-containing papermaking systems |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2071304A (en) * | 1934-12-04 | 1937-02-16 | Great Western Electro Chemical Co | Process of manufacture of products of ground wood pulp |
-
1965
- 1965-02-23 US US434627A patent/US3507743A/en not_active Expired - Lifetime
-
1966
- 1966-02-08 NL NL6601601A patent/NL6601601A/xx unknown
- 1966-02-11 ES ES0322925A patent/ES322925A1/es not_active Expired
- 1966-02-12 FI FI0351/66A patent/FI43809B/fi active
- 1966-02-17 DE DE19661546253 patent/DE1546253A1/de not_active Withdrawn
- 1966-02-17 BE BE676663D patent/BE676663A/xx unknown
- 1966-02-22 DK DK92466AA patent/DK109015C/da active
- 1966-02-22 GB GB7656/66A patent/GB1095280A/en not_active Expired
- 1966-02-23 SE SE2372/66A patent/SE314580B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1546253A1 (de) | 1970-04-30 |
| BE676663A (sv) | 1966-07-18 |
| DK109015C (da) | 1968-03-04 |
| ES322925A1 (es) | 1966-11-16 |
| SE314580B (sv) | 1969-09-08 |
| GB1095280A (en) | 1967-12-13 |
| US3507743A (en) | 1970-04-21 |
| NL6601601A (sv) | 1966-08-24 |