CH220668A - Process for the preparation of a methine dye. - Google Patents
Process for the preparation of a methine dye.Info
- Publication number
- CH220668A CH220668A CH220668DA CH220668A CH 220668 A CH220668 A CH 220668A CH 220668D A CH220668D A CH 220668DA CH 220668 A CH220668 A CH 220668A
- Authority
- CH
- Switzerland
- Prior art keywords
- methine dye
- preparation
- dye
- good
- diethylaminobenzaldehyde
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 5
- 125000001434 methanylylidene group Chemical group [H]C#[*] 0.000 title claims description 3
- 239000000975 dye Substances 0.000 claims description 10
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 claims description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- DJACTCNGCHPGOI-UHFFFAOYSA-N butyl 2-cyanoacetate Chemical compound CCCCOC(=O)CC#N DJACTCNGCHPGOI-UHFFFAOYSA-N 0.000 claims description 3
- 229920002678 cellulose Polymers 0.000 claims description 3
- 229920003086 cellulose ether Polymers 0.000 claims description 3
- 150000002170 ethers Chemical class 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- MNFZZNNFORDXSV-UHFFFAOYSA-N 4-(diethylamino)benzaldehyde Chemical compound CCN(CC)C1=CC=C(C=O)C=C1 MNFZZNNFORDXSV-UHFFFAOYSA-N 0.000 claims description 2
- 238000009835 boiling Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
Landscapes
- Coloring (AREA)
Description
Verfahren zur Herstellung eines Nethinfar bstofes. Gegenstand dieses Zusatzpatentes ist ein Verfahren zur Herstellung eines Methinfarb- stoffes, welches dadurch gekennzeichnet ist, dass man p-Diäthylaminobenzaldehyd mit Cyanessigsäurebutylester umsetzt.
Der neue Farbstoff besitzt ein hervor ragendes Ziehvermögen auf Acetatseide und färbt Celluloseester und -äther in sehr klaren grünstichig-gelben Tönen, die sich durch sehr gute Nassechtheiten und sehr gute Lichtecht heit auszeichnen.
<I>Beispiel:</I> 142 Gewichtsteile Cyanessigsäurebutyl- ester werden mit 177 Gewichtsteilen para- Diäthylaminobenzaldehyd in 300 Gewichts teilen Alkohol unter Zusatz von 0,4 Ge wichtsteilen Piperidin mehrere Stunden zum Sieden erhitzt, bis die Farbstoffbildung be endet ist. Der Alkohol wird abdestilliert; nach einiger Zeit kristallisiert der Farbstoff in gelben Kristallen vom Schmelzpunkt 72 bis 73 C.
Fr besitzt ein hervorragendes Ziehvermögen auf Aeetatseide und färbt Celluloseester und -äther in sehr klaren grün- stichig-gelben Tönen, die sich durch sehr gute Nassechtheiten und sehr gute Lichtechtheit auszeichnen.
Process for the production of a nethine dye. The subject of this additional patent is a process for the production of a methine dye which is characterized in that p-diethylaminobenzaldehyde is reacted with butyl cyanoacetate.
The new dye has excellent drawability on acetate silk and dyes cellulose esters and ethers in very clear, greenish-yellow shades, which are characterized by very good wet fastness and very good lightfastness.
<I> Example: </I> 142 parts by weight of butyl cyanoacetate are heated to boiling for several hours with 177 parts by weight of para-diethylaminobenzaldehyde in 300 parts by weight of alcohol with the addition of 0.4 parts by weight of piperidine, until the dye formation has ended. The alcohol is distilled off; After a while the dye crystallizes in yellow crystals with a melting point of 72 to 73 C.
Fr has excellent drawability on acetate silk and dyes cellulose esters and ethers in very clear, greenish-yellow shades, which are characterized by very good wet fastness and very good lightfastness.
Claims (1)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF3760D DE878539C (en) | 1939-08-17 | 1939-08-17 | Process for the production of methine dyes |
| DE220668X | 1940-05-30 | ||
| DE220670X | 1940-05-30 | ||
| CH217770T | 1940-07-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH220668A true CH220668A (en) | 1942-04-15 |
Family
ID=32110870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH220668D CH220668A (en) | 1939-08-17 | 1940-07-08 | Process for the preparation of a methine dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH220668A (en) |
-
1940
- 1940-07-08 CH CH220668D patent/CH220668A/en unknown
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