GB190204886A - Improvements in Processes for Producing Acetyl Derivates of Cellulose and Oxy-cellulose. - Google Patents
Improvements in Processes for Producing Acetyl Derivates of Cellulose and Oxy-cellulose.Info
- Publication number
- GB190204886A GB190204886A GB190204886DA GB190204886A GB 190204886 A GB190204886 A GB 190204886A GB 190204886D A GB190204886D A GB 190204886DA GB 190204886 A GB190204886 A GB 190204886A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cellulose
- acid
- oxycellulose
- produced
- oxycelluloses
- 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
Landscapes
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
4886. Landsberg, L. Feb. 26. Cellulose acetates.-Acetyl derivatives of cellulose and oxycellulose are produced by heating hydrocellulose or oxycellulose with acetic anhydride at 40‹-90‹ C., in the presence of about 1 per cent. of orthophosphoric acid, pyrophosphoric acid, metaphosphoric acid or phosphoric anhydride, while stirring as long as the consistency of the mixture permits, and then washing the product with water and drying it. When oxycelluloses are employed, sulphuric acid may be used in place of phosphoric acid. The oxycelluloses employed may be those produced by acting on cellulose with potassium chlorate and hydrochloric acid, with nitric acid, or with bromine and calcium carbonate. Oxycellulose may also be produced by conducting a constant current of chlorine into a heated mixture of finely-divided cellulose, calcium carbonate, and water.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB190204886T | 1902-02-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB190204886A true GB190204886A (en) | 1903-01-15 |
Family
ID=32153668
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190204886D Expired GB190204886A (en) | 1902-02-26 | 1902-02-26 | Improvements in Processes for Producing Acetyl Derivates of Cellulose and Oxy-cellulose. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB190204886A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104004101A (en) * | 2013-02-27 | 2014-08-27 | 东北林业大学 | Preparation method for acetylated nanocellulose crystal |
-
1902
- 1902-02-26 GB GB190204886D patent/GB190204886A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104004101A (en) * | 2013-02-27 | 2014-08-27 | 东北林业大学 | Preparation method for acetylated nanocellulose crystal |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
PT2174959E (en) | Etherified thinned starch | |
GB190204886A (en) | Improvements in Processes for Producing Acetyl Derivates of Cellulose and Oxy-cellulose. | |
GB579669A (en) | Improvements in or relating to the production of cellulose | |
GB383778A (en) | Improvement in method of manufacturing modified starches, dextrines and british gums | |
US3557091A (en) | Acetylation of starch | |
GB631242A (en) | Improvements in making of starch derivatives | |
US3607395A (en) | Starch hydrolysis | |
US3152925A (en) | High viscosity starch derivatives | |
Moe et al. | Periodate Oxidation of the Formyl Esters of Starch1 | |
CN114466596A (en) | Method for producing pregelatinized starch and/or pregelatinized flour | |
GB191006031A (en) | Improvements in the Manufacture of Mono-chlor-acetic Acid. | |
GB1449891A (en) | Enzyme fixed on solid supports | |
GB1012986A (en) | Process for the manufacture of 4,5-dichloro- and 4,5-dibromo-naphthalene-1,8-dicarboxylic acids and their anhydrides | |
JPS6330323B2 (en) | ||
JP2000072801A (en) | Composition containing esterified crosslinked derivative of carboxylic alkyl etherified starch and its production | |
US1275884A (en) | Preparation of cellulose acetate. | |
SU590312A1 (en) | Method of obtaining acetylcyanethylcellulose | |
US955082A (en) | Cellulose formate. | |
US1449380A (en) | Manufacture of threads, filaments, strips, or films of cellulose | |
Higgins et al. | The Partial, direct Iodination of Phthalic Anhydride and Pathalimide | |
US722861A (en) | Benzylnaphthylamin-sulfonic acid and process of making same. | |
JPS6028475A (en) | Preparation of low-viscosity starch paste | |
US709922A (en) | Process of making cellulose esters. | |
GB621531A (en) | Manufacture of chlorinated aliphatic acids | |
US1864229A (en) | Production of galactonic acid and its lactone |