GB500204A - Process for the extraction of pure cellulose from annual and biennial plants - Google Patents
Process for the extraction of pure cellulose from annual and biennial plantsInfo
- Publication number
- GB500204A GB500204A GB21419/37A GB2141937A GB500204A GB 500204 A GB500204 A GB 500204A GB 21419/37 A GB21419/37 A GB 21419/37A GB 2141937 A GB2141937 A GB 2141937A GB 500204 A GB500204 A GB 500204A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solution
- treatment
- cellulose
- annual
- dilute
- Prior art date
- 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/26—Multistage processes
Landscapes
- Wrappers (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
Abstract
500,204. Obtaining cellulose. CONTARDI, A., and CIOCCA, B. Aug. 3, 1937, Nos. 21419 and 21420. Convention dates, July 31, 1936 and Nov. 3, 1936. [Class 2 (ii)] To obtain cellulose of high a cellulose and low ash content, suitable, e.g. for nitration or for the viscose industry, the stems or leaves of annual or biennial plants such as sorghum, buckwheat, sugar cane, marsh cane, bamboo, alfa, algerian esparto, cotton plant refuse or banana or palm leaves are subjected for 10 hours at 4 atmospheres pressure to treatment with at least 5 times their weight of a 1À5 per cent solution of sodium bisulphite, followed by washing, mechanical disintegration and a further treatment with caustic soda of less than 1 per cent strength. The material is finally washed, bleached and neutralized. In an example, the alkaline treatment is conducted for 5-6 hours at 2-3 atmospheres pressure with a weight of NaOH solution at least 5 times that of the material being treated. For the alkaline treatment, and for preparation of the sodium bisulphite, use may be made of caustic soda recovered in the course of artificial silk manufacture. The Specification as open to inspection under Sect. 91 states that the second treatment with alkali may be performed hot or cold at ordinary pressure but with a more concentrated soda solution. It also includes a claim for treating the material first with dilute soda solution and then with a dilute bisulphite solution. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT500204X | 1936-07-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB500204A true GB500204A (en) | 1939-02-03 |
Family
ID=11272088
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB21419/37A Expired GB500204A (en) | 1936-07-31 | 1937-08-03 | Process for the extraction of pure cellulose from annual and biennial plants |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR823525A (en) |
GB (1) | GB500204A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2283989A (en) * | 1993-11-19 | 1995-05-24 | Jin Yuan Paper Corp | Making paper from banana fibres |
-
1937
- 1937-06-24 FR FR823525D patent/FR823525A/en not_active Expired
- 1937-08-03 GB GB21419/37A patent/GB500204A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2283989A (en) * | 1993-11-19 | 1995-05-24 | Jin Yuan Paper Corp | Making paper from banana fibres |
GB2283989B (en) * | 1993-11-19 | 1997-09-17 | Jin Yuan Paper Corp | Method of paper making from banana fiber |
Also Published As
Publication number | Publication date |
---|---|
FR823525A (en) | 1938-01-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB319293A (en) | Improvements in or relating to the manufacture of artificial threads | |
GB427626A (en) | Improvements in or relating to the manufacture of cellulose | |
GB283910A (en) | Improved process for the extraction of cellulose or paper pulp from fibrous vegetable matter containing the same | |
GB576510A (en) | Improvements in or relating to the production of cellulose | |
GB500204A (en) | Process for the extraction of pure cellulose from annual and biennial plants | |
US2074339A (en) | Preparation of cellulosic material | |
US1679441A (en) | Process of manufacturing pulp for paper production | |
GB492418A (en) | Process of spinning rayon, bath used and the product | |
GB343429A (en) | Improvements in or relating to the process of producing cellulosic pulp | |
GB403255A (en) | Improvements in or relating to the treatment of vegetable fibrous materials | |
GB388656A (en) | Improvements in processes for producing practically pure cellulose ("alpha-cellulose") from raw celluloses of any origin | |
GB347297A (en) | Method of manufacturing cellulose | |
GB518887A (en) | A process for the production of pulp material from wood, straw, grasses and similar cellulose containing plants | |
GB514384A (en) | Process for the manufacture of pulp from fibrous vegetable materials | |
DE664103C (en) | Process for the digestion of vegetable fibers | |
GB459531A (en) | Improvements in or relating to the manufacture of cellulose | |
DE388998C (en) | Process for the production of textile fibers and cellulose from suitable raw plants such as nettles, jute, reeds, Typha and the like. like | |
US1825307A (en) | Process of producing material rich in xylan | |
GB460812A (en) | Improvement in methods of producing paper pulp from fibrous materials | |
DE1005824B (en) | Process for the production of cellulose rich in alphacellulose, low in pentosan | |
DE646819C (en) | Process for the production of a highly refined, pentosan-free pulp | |
DE548035C (en) | Process for the production of a highly refined pentosan-free pulp | |
GB474188A (en) | Improvements in or relating to the production of cellulose from cellulose containing materials for the manufacture of viscose rayon, and paper | |
GB609610A (en) | Improvements in the manufacture of paper pulp | |
GB496312A (en) | Improvements in or relating to the manufacture of cellulose |