CH314929A - Process for the production of bleachable half-cellulose from softwood or hardwood - Google Patents
Process for the production of bleachable half-cellulose from softwood or hardwoodInfo
- Publication number
- CH314929A CH314929A CH314929DA CH314929A CH 314929 A CH314929 A CH 314929A CH 314929D A CH314929D A CH 314929DA CH 314929 A CH314929 A CH 314929A
- Authority
- CH
- Switzerland
- Prior art keywords
- bleachable
- softwood
- hardwood
- cellulose
- production
- Prior art date
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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/24—Continuous processes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
-
- 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
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/10—Physical methods for facilitating impregnation
-
- 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
- D21C3/06—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT314929X | 1954-02-08 | ||
| AT280754X | 1954-07-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH314929A true CH314929A (en) | 1956-07-15 |
Family
ID=25608222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH314929D CH314929A (en) | 1954-02-08 | 1954-08-30 | Process for the production of bleachable half-cellulose from softwood or hardwood |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE533805A (en) |
| CH (1) | CH314929A (en) |
| DE (1) | DE1061612B (en) |
| FR (1) | FR1115967A (en) |
| GB (1) | GB757970A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0224470A1 (en) * | 1985-11-29 | 1987-06-03 | Neusiedler Aktiengesellschaft für Papierfabrikation | Process for producing cellulose pulp from fibrous plant material |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2609803C1 (en) * | 2015-09-28 | 2017-02-06 | Общество с ограниченной ответственностью "Твин Технолоджи Компани" | Ways to enhance quality and reactivity of cellulose |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE203230C (en) * | ||||
| US480334A (en) * | 1892-08-09 | Hermann xdelbert alfred | ||
| FR525403A (en) * | 1915-02-18 | 1921-09-22 | Leopold Enge | Process for the manufacture of a clear and resistant fibrin of wood or other materials containing cellulose |
| FR703039A (en) * | 1920-10-01 | 1931-04-22 | Ges Fuer Technischen Fortschritt Mbh | Process for obtaining cellulose and spinnable fibers |
| US1633730A (en) * | 1924-12-22 | 1927-06-28 | Jr Frederick K Fish | Apparatus and process for making paper pulp |
| US1859845A (en) * | 1926-04-08 | 1932-05-24 | Arthur M Hyde | Treatment of wood for the production of pulp |
| US1859848A (en) * | 1926-09-03 | 1932-05-24 | Arthur M Hyde | Production of fibrous pulp from vegetable material |
| FR876760A (en) * | 1939-07-19 | 1942-11-17 | Ramens Patenter Ab | Improvements in the manufacture of wood pulp or cellulose |
| AT175782B (en) * | 1951-02-28 | 1953-08-10 | Waldhof Zellstoff Fab | Process for the production of semi-pulp |
-
0
- BE BE533805D patent/BE533805A/xx unknown
-
1954
- 1954-08-30 CH CH314929D patent/CH314929A/en unknown
- 1954-08-31 DE DEL19783A patent/DE1061612B/en active Pending
- 1954-11-04 FR FR1115967D patent/FR1115967A/en not_active Expired
- 1954-11-29 GB GB34570/54A patent/GB757970A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0224470A1 (en) * | 1985-11-29 | 1987-06-03 | Neusiedler Aktiengesellschaft für Papierfabrikation | Process for producing cellulose pulp from fibrous plant material |
Also Published As
| Publication number | Publication date |
|---|---|
| BE533805A (en) | |
| GB757970A (en) | 1956-09-26 |
| FR1115967A (en) | 1956-05-02 |
| DE1061612B (en) | 1959-07-16 |
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