AT60039B - Process for the preparation of colored cellulose esters. - Google Patents
Process for the preparation of colored cellulose esters.Info
- Publication number
- AT60039B AT60039B AT60039DA AT60039B AT 60039 B AT60039 B AT 60039B AT 60039D A AT60039D A AT 60039DA AT 60039 B AT60039 B AT 60039B
- Authority
- AT
- Austria
- Prior art keywords
- colored
- cellulose esters
- preparation
- colored cellulose
- cellulose
- Prior art date
Links
- 229920002678 cellulose Polymers 0.000 title claims description 10
- 238000000034 method Methods 0.000 title claims description 8
- 238000002360 preparation method Methods 0.000 title description 2
- 239000000975 dye Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 5
- 239000001913 cellulose Substances 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 9
- 235000010980 cellulose Nutrition 0.000 description 4
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-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
- 230000021736 acetylation Effects 0.000 description 2
- 238000006640 acetylation reaction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 241000555825 Clupeidae Species 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- WLKAMFOFXYCYDK-UHFFFAOYSA-N [5-amino-4-[[3-[(2-amino-4-azaniumyl-5-methylphenyl)diazenyl]-4-methylphenyl]diazenyl]-2-methylphenyl]azanium;dichloride Chemical compound [Cl-].[Cl-].CC1=CC=C(N=NC=2C(=CC([NH3+])=C(C)C=2)N)C=C1N=NC1=CC(C)=C([NH3+])C=C1N WLKAMFOFXYCYDK-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229940081735 acetylcellulose Drugs 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 125000002485 formyl group Chemical group [H]C(*)=O 0.000 description 1
- 229940051142 metanil yellow Drugs 0.000 description 1
- NYGZLYXAPMMJTE-UHFFFAOYSA-M metanil yellow Chemical compound [Na+].[O-]S(=O)(=O)C1=CC=CC(N=NC=2C=CC(NC=3C=CC=CC=3)=CC=2)=C1 NYGZLYXAPMMJTE-UHFFFAOYSA-M 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 125000001501 propionyl group Chemical group O=C([*])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Landscapes
- Processes Of Treating Macromolecular Substances (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Darstellung von gefärbten Zelluloseestern.
Es sind bereits mehrere Verfahren bekannt, die Azetatseide zu färben bzw. dieselbe in gefärbtem Zustande herzustellen. Man hat z. B. Zellulose zunächst gefärbt und dann verestert oder fertige Azetylzellulose unter Anwendung von Quellungs-oder organischen Lösungsmitteln gefärbt, die die Aufnahmefähigkeit der sonst gegen Farbstoffe indifferenten Zelluloseester fördern sollen.
Nach dem vorliegenden Verfahren lassen sich gefärbte Zelluloseester, die hervorragend wasch-und lichtecht sind, in einem einzigen Prozess herstellen, indem der Farbstoff in dem Azidylierungsgemisch direkt oder in einem Teil der Essigsäure z. B. aufgelöst wird und darauf die Zellulose, Hydro-oder Oxyzellulose in dieser Farbstoffauflösung unter Erwärmung in Lösung gebracht wird. Da es heute eine grössere Anzahl von echten Farbstoffen gibt, die gegen Säuren beständig sind, so lassen sich unter Anwendung solcher echter, säurebeständiger Farbstoffe Azidylierungsprodukte lebhaft gefärbt, von hervorragenden Echtheitseigenschaften, ohne besondere Vorsichtsmassregeln in diesem denkbar einfachsten Verfahren herstellen.
Beim Einspritzen einer so gefärbten Lösung der Formyl-, Azotyl-oder Propionyl- zellulose usw. in eines der üblichen Fällungsmittel, wie Wasser, Benzol, Alkohol usw., bekommt man lebhaft und klar gefärbte Gebilde in der gewünschten Form als Garn, Film usw., die in das Fällbad nicht bluten, auch beim weiteren Behandeln den Farbstoff nicht abgeben und dieselbe Festigkeit wie im ungefärbten Zustand besitzen. Beim Behandeln mit den üblichen Lösungsmitteln, wie z. B. Chloroform, Azeton, Dichloräthyien usw., gehen die gefärbten Zel ! aloseprodukte klar in Lösung und lassen sich ohne Änderung der Nuance weiter verarbeiten.
Beispiel :
100 Teile gereinigte und getrocknete Baumwolle worden in eine Mischung von 450 Teilen Essigsäureanhydrid und 400 Teilen Essigsaure die 2% konzentrierte Schwefel- säure enthalt, unter Rühren eingetragen ; zugleich g man eine Lösung Bismarckbraun in 100 Teilen Essigsäure hinzu und erwärmt die ganze Masse auf dem Wasserbad, bis eine klare braune Lösung entstanden ist.
Anstatt den Farbstoff besonders zu lösen, kann man ihn direkt in Substanz dem
Azetylierungsgemisch unter Rühren zusetzen. Dieselben Resultate erzielt man, wenn der
Farbstoff vor dem Erwärmen oder zu der fertigen Azetylierungsmasse zugegeben wird.
Auf dieselbe Weise verfährt man bel Anwendung von anderen Farbstoffen, z. B.
Metanilgelb, Chrysophenin G, lichtechten Scharlachmarken, substantiven Schwarz usw.
Die so erhaltenen Lösungen von gefärbten azidylierten Zellulosen können direkt weiterverarboitet werden.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the preparation of colored cellulose esters.
Several processes are already known for dyeing acetate silk or for producing the same in a dyed state. One has z. B. cellulose is first colored and then esterified or finished acetyl cellulose is colored using swelling or organic solvents which are intended to promote the absorption of the cellulose esters, which are otherwise indifferent to dyes.
According to the present process, colored cellulose esters which are outstandingly washable and lightfast can be produced in a single process by adding the dye in the acidylation mixture directly or in part of the acetic acid, e.g. B. is dissolved and then the cellulose, hydrocellulose or oxycellulose is brought into solution in this dye dissolution with heating. Since there are now a large number of real dyes that are resistant to acids, acidylation products of this kind can be vividly colored using such real, acid-resistant dyes, with excellent fastness properties, and in this simplest process, without any special precautions.
When a solution of formyl, azotyl or propionyl cellulose, etc., colored in this way is injected into one of the customary precipitating agents, such as water, benzene, alcohol, etc., you get lively and clearly colored structures in the desired shape as yarn, film, etc. that do not bleed into the precipitation bath, do not release the dye during further treatment and have the same strength as in the uncolored state. When treating with the usual solvents, such as. B. chloroform, acetone, dichloroethyien etc., the colored cells go! alose products are clear in solution and can be processed further without changing the shade.
Example:
100 parts of cleaned and dried cotton were added with stirring to a mixture of 450 parts of acetic anhydride and 400 parts of acetic acid containing 2% concentrated sulfuric acid; at the same time, a solution of Bismarck brown in 100 parts of acetic acid is added and the entire mass is heated on a water bath until a clear brown solution has formed.
Instead of dissolving the dye in particular, it can be used directly in substance
Add acetylation mixture with stirring. The same results are achieved when the
Dye is added before heating or to the finished acetylation composition.
The same procedure is followed when using other dyes, e.g. B.
Metanil yellow, chrysophenin G, lightfast scarlet marks, substantive black, etc.
The solutions of colored acidylated celluloses obtained in this way can be further processed directly.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT60039T | 1912-06-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT60039B true AT60039B (en) | 1913-07-10 |
Family
ID=3581885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT60039D AT60039B (en) | 1912-06-03 | 1912-06-03 | Process for the preparation of colored cellulose esters. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT60039B (en) |
-
1912
- 1912-06-03 AT AT60039D patent/AT60039B/en active
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