GB226142A - Process for the purification or dehydration of cellullose esters and ethers used alone or in admixture with organic or inorganic substances - Google Patents
Process for the purification or dehydration of cellullose esters and ethers used alone or in admixture with organic or inorganic substancesInfo
- Publication number
- GB226142A GB226142A GB7086/24A GB708624A GB226142A GB 226142 A GB226142 A GB 226142A GB 7086/24 A GB7086/24 A GB 7086/24A GB 708624 A GB708624 A GB 708624A GB 226142 A GB226142 A GB 226142A
- Authority
- GB
- United Kingdom
- Prior art keywords
- esters
- purification
- alcohol
- absolute alcohol
- nitrocellulose
- 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
- 150000002148 esters Chemical class 0.000 title abstract 6
- 238000000746 purification Methods 0.000 title abstract 3
- 150000002170 ethers Chemical class 0.000 title abstract 2
- 239000000126 substance Substances 0.000 title abstract 2
- 230000018044 dehydration Effects 0.000 title 1
- 238000006297 dehydration reaction Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 10
- 239000000020 Nitrocellulose Substances 0.000 abstract 3
- 229920001220 nitrocellulos Polymers 0.000 abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 3
- 229920002955 Art silk Polymers 0.000 abstract 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 abstract 2
- SMEGJBVQLJJKKX-HOTMZDKISA-N [(2R,3S,4S,5R,6R)-5-acetyloxy-3,4,6-trihydroxyoxan-2-yl]methyl acetate Chemical compound CC(=O)OC[C@@H]1[C@H]([C@@H]([C@H]([C@@H](O1)O)OC(=O)C)O)O SMEGJBVQLJJKKX-HOTMZDKISA-N 0.000 abstract 2
- 229940081735 acetylcellulose Drugs 0.000 abstract 2
- 229920002301 cellulose acetate Polymers 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 238000000605 extraction Methods 0.000 abstract 2
- 238000007689 inspection Methods 0.000 abstract 2
- 239000000047 product Substances 0.000 abstract 2
- 238000009987 spinning Methods 0.000 abstract 2
- KIWBPDUYBMNFTB-UHFFFAOYSA-N Ethyl hydrogen sulfate Chemical class CCOS(O)(=O)=O KIWBPDUYBMNFTB-UHFFFAOYSA-N 0.000 abstract 1
- 150000001298 alcohols Chemical class 0.000 abstract 1
- 239000006227 byproduct Substances 0.000 abstract 1
- 229920002678 cellulose Polymers 0.000 abstract 1
- 229920003086 cellulose ether Polymers 0.000 abstract 1
- 239000012024 dehydrating agents Substances 0.000 abstract 1
- 230000032050 esterification Effects 0.000 abstract 1
- 238000005886 esterification reaction Methods 0.000 abstract 1
- 238000006266 etherification reaction Methods 0.000 abstract 1
- 239000003925 fat Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000012264 purified product Substances 0.000 abstract 1
- 239000002966 varnish Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B3/00—Preparation of cellulose esters of organic acids
- C08B3/22—Post-esterification treatments, including purification
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
Cellulose esters and ethers, particularly nitrocellulose and acetylcellulose are treated with absolute alcohol for the purpose of removing water absorbed in the ester or ether, or for its purification, the alcohol extracting, particularly in the case of nitrocellulose, the lower esters. The product that remains is more homogeneous, has an improved stability, is free from water, and is suitable for the manufacture of artificial silk, plates, films, smokeless powders and dynamites, and for such uses the product may be mixed with other organic or inorganic substances. Solutions of the purified products when applied to metal surfaces show no coloration. From the solution obtained in the preliminary extraction, the lower esters may be precipitated by water and these esters may be worked up into spinning solutions, varnishes, &c. Absolute alcohol may also be used in the preparation of solutions of nitrocellulose or acetylcellulose to be used for spinning artificial silk.ALSO:The Specification as open to inspection under Sect. 91 (3) (a) refers to the addition of absolute alcohol during the etherification of alcohols and the esterification of alcohol for the purpose of dissolving, and so removing from the sphere of action, the by-products such as ethyl sulphates and mono esters that are formed during the reaction. By such removal, the speed of the reaction is increased, the yield improved, and it is possible to reduce the proportion of dehydrating-agent. This subject-matter does not appear in the Specification as accepted.ALSO:The Specification as open to inspection under Sect. 91 (3) (a) refers to the purification of edible fats by extraction with absolute alcohol. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT226142X | 1923-12-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB226142A true GB226142A (en) | 1925-06-19 |
Family
ID=3669884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7086/24A Expired GB226142A (en) | 1923-12-15 | 1924-03-19 | Process for the purification or dehydration of cellullose esters and ethers used alone or in admixture with organic or inorganic substances |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB226142A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE767498C (en) * | 1935-02-25 | 1952-09-08 | Gevaert Photo Prod Nv | Process for the stabilization of organic cellulose esters |
-
1924
- 1924-03-19 GB GB7086/24A patent/GB226142A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE767498C (en) * | 1935-02-25 | 1952-09-08 | Gevaert Photo Prod Nv | Process for the stabilization of organic cellulose esters |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB416549A (en) | Improvements in the manufacture of cellulose and lignocellulosic materials | |
| GB1076969A (en) | A process for the production of water-soluble hydroxypropyl-methyl celluloses | |
| GB822834A (en) | A method of processing waste of polyethylene terephthalate by hydrolysis | |
| GB689194A (en) | Improvements in the production of mixed cellulose esters | |
| GB226142A (en) | Process for the purification or dehydration of cellullose esters and ethers used alone or in admixture with organic or inorganic substances | |
| GB466356A (en) | Improvements relating to the production of pectin | |
| GB576785A (en) | Improvements in or relating to the manufacture of cellulose | |
| GB377795A (en) | Improvements in the manufacture and production of cellulose compounds | |
| GB471847A (en) | Improvements in or relating to the manufacture and treatment of cellulose derivatives | |
| US2837540A (en) | Extraction of sterols | |
| GB461790A (en) | Process for the manufacture of laevo-ascorbic acid | |
| GB640075A (en) | Improvements in or relating to the manufacture of cellulose esters | |
| GB358980A (en) | Process for working up crude cellulose ester solutions | |
| GB290464A (en) | Improvements in the manufacture and production of lactic acid and its derivatives | |
| GB177809A (en) | Manufacture of cellulose derivatives | |
| GB240174A (en) | An improved process for the manufacture of artificial horn from proteins or albuminous substances | |
| GB556664A (en) | Improvements in or relating to the production of cellulose derivatives | |
| GB381991A (en) | Improvements relating to the production of cellulose triacetate | |
| GB753564A (en) | Process for extracting impurities from waste acetic acid in the manufacture of acetyl-celluloses | |
| GB317194A (en) | Improvements in and relating to the manufacture of ketones | |
| GB568932A (en) | Improvements in or relating to the manufacture of cellulose esters | |
| GB372241A (en) | Improvements in the manufacture of cellulose esters | |
| GB361888A (en) | Improvements in and relating to processes for the production of esters of aliphatic acids | |
| GB988650A (en) | Improved process for extracting the unsaponifiable fraction from fatty bodies | |
| GB411260A (en) | An improved process for stabilising organic esters of cellulose |