AT53099B - Process for the preparation of viscous solutions of acetyl cellulose. - Google Patents
Process for the preparation of viscous solutions of acetyl cellulose.Info
- Publication number
- AT53099B AT53099B AT53099DA AT53099B AT 53099 B AT53099 B AT 53099B AT 53099D A AT53099D A AT 53099DA AT 53099 B AT53099 B AT 53099B
- Authority
- AT
- Austria
- Prior art keywords
- acetyl cellulose
- preparation
- viscous solutions
- viscous
- desc
- Prior art date
Links
- 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 title claims description 5
- 229940081735 acetylcellulose Drugs 0.000 title claims description 5
- 229920002301 cellulose acetate Polymers 0.000 title claims description 5
- 238000000034 method Methods 0.000 title claims description 3
- 238000002360 preparation method Methods 0.000 title claims description 3
- TZIHFWKZFHZASV-UHFFFAOYSA-N methyl formate Chemical compound COC=O TZIHFWKZFHZASV-UHFFFAOYSA-N 0.000 claims description 6
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 2
- WBJINCZRORDGAQ-UHFFFAOYSA-N formic acid ethyl ester Natural products CCOC=O WBJINCZRORDGAQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims 2
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 150000002168 ethanoic acid esters Chemical class 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Landscapes
- Polysaccharides And Polysaccharide Derivatives (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Darstellung viskoser Lösungen von Azetylzellulose.
Die Azetylzellulose löst sich bekanntermassen leicht in Chloroform und Azeton, nicht aber in Essigsäureäthylester. Es wurde nun gefunden, dass dieselbe in Ameisensäuremethylester ausserordentlich reichlich zu einer viskosen Lösung aufgenommen wird, aus der das Produkt durch Verdunsten in zusammenhängenden Films leicht erhältlich ist.
Die leichte Verdunstung des Ameisensäuremethylesters ist dabei noch ein besonderer Vorteil. Weniger reichlich, aber immer noch weitaus löslicher als in Essigsäureester oder l tern höherer Säuren ist die Azetylzellulose in Ameisensäureäthylester. Natürlich können auch andere Azetylzellulose lösende oder quellende Bestandteile zugegeben werden.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the preparation of viscous solutions of acetyl cellulose.
As is known, acetyl cellulose dissolves easily in chloroform and acetone, but not in ethyl acetate. It has now been found that the same is extremely abundantly taken up in methyl formate to form a viscous solution from which the product can easily be obtained by evaporation in a coherent film.
The easy evaporation of the methyl formate is a particular advantage. Acetyl cellulose in ethyl formate is less abundant, but still far more soluble than in acetic acid ester or in higher acids. Of course, other acetyl cellulose-dissolving or swelling components can also be added.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE53099X | 1910-03-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT53099B true AT53099B (en) | 1912-04-10 |
Family
ID=5627525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT53099D AT53099B (en) | 1910-03-12 | 1911-01-14 | Process for the preparation of viscous solutions of acetyl cellulose. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT53099B (en) |
-
1911
- 1911-01-14 AT AT53099D patent/AT53099B/en active
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