CH375215A - Process for the production of cellulose by the acid sulphite process - Google Patents
Process for the production of cellulose by the acid sulphite processInfo
- Publication number
- CH375215A CH375215A CH6831159A CH6831159A CH375215A CH 375215 A CH375215 A CH 375215A CH 6831159 A CH6831159 A CH 6831159A CH 6831159 A CH6831159 A CH 6831159A CH 375215 A CH375215 A CH 375215A
- Authority
- CH
- Switzerland
- Prior art keywords
- cellulose
- production
- acid sulphite
- acid
- sulphite
- Prior art date
Links
- 239000002253 acid Substances 0.000 title 1
- 229920002678 cellulose Polymers 0.000 title 1
- 239000001913 cellulose Substances 0.000 title 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 title 1
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
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/06—Pretreatment of the finely-divided materials before digesting with alkaline reacting compounds
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEA29111A DE1134577B (en) | 1958-03-22 | 1958-03-22 | Pretreatment of fir and spruce wood chips to produce cellulose using the acid sulphite process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH375215A true CH375215A (en) | 1964-02-15 |
Family
ID=6926823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH6831159A CH375215A (en) | 1958-03-22 | 1959-01-14 | Process for the production of cellulose by the acid sulphite process |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH375215A (en) |
| DE (1) | DE1134577B (en) |
| FR (1) | FR1229826A (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE258180C (en) * | 1912-01-06 | |||
| DE304214C (en) * | 1916-10-19 | |||
| FR715353A (en) * | 1930-08-07 | 1931-12-02 | Process for treating softwoods intended for delignification | |
| GB407018A (en) * | 1932-07-27 | 1934-02-27 | Henry Dreyfus | Improvements in the treatment of cellulosic materials and the manufacture of cellulose esters and ethers therefrom |
| US2175154A (en) * | 1935-06-26 | 1939-10-03 | Chemipulp Process Inc | Method for treating cellulosic material |
| DE665959C (en) * | 1936-11-28 | 1938-10-07 | Halbzellstoff Ind Ag F | Process for the production of pulp from beech wood |
| CH225165A (en) * | 1937-09-06 | 1943-01-15 | Halbzellstoff Ind Ag F | Process for the production of semi-cellulose from wood, bamboo, straw, grass and other cellulose-containing plants. |
-
1958
- 1958-03-22 DE DEA29111A patent/DE1134577B/en active Pending
-
1959
- 1959-01-14 CH CH6831159A patent/CH375215A/en unknown
- 1959-03-16 FR FR18398A patent/FR1229826A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1229826A (en) | 1960-09-09 |
| DE1134577B (en) | 1962-08-09 |
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