AT113985B - Process for the production of brown colorations on cellulose esters and ethers. - Google Patents
Process for the production of brown colorations on cellulose esters and ethers.Info
- Publication number
- AT113985B AT113985B AT113985DA AT113985B AT 113985 B AT113985 B AT 113985B AT 113985D A AT113985D A AT 113985DA AT 113985 B AT113985 B AT 113985B
- Authority
- AT
- Austria
- Prior art keywords
- ethers
- cellulose esters
- production
- colorations
- brown
- Prior art date
Links
Landscapes
- Coloring (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Herstellung brauner Färbungen auf Celluloseestern und-äthern.
EMI1.1
EMI1.2
In Formel l) bedeuten 2 X Nitrogruppen, das 3. X eine Karboxylgruppe. In Formel 2) stellen 2 X Nitrogruppen, das 3. X einen beliebigen Substituenten dar. Freie Sulfogruppen sollen in der Formel ausgeschlossen sein. Daneben können die Farbstoffe noch andere Gruppen wie beispielsweise OH, NH2, CH3 usw. enthalten. Es war in keiner Weise vorauszusehen, dass diese Farbstoffe kräftige Färbungen auf Azetylzellulose ergeben würden, besonders deshalb nicht, weil die analogen Farbstoffe ohne eine Karboxylgruppe nicht oder praktisch unbrauchbar auf Azetatseide ziehen.
Die Farbstoffe können z. B. in der Weise hergestellt werden, dass man Dinitrohalogenaryle bzw.
Dinitrohalogenarylkarbonsäuren, deren Halogen austauschbar ist, mit unsulfierten Amidodiphenylaminen bzw. Amidodiphenylaminkarbonsäuren zweckmässig in Gegenwart von säurebindenden Mitteln kondensiert.
Beispiele :
EMI1.3
EMI1.4
<Desc/Clms Page number 2>
enthält, in der üblichen Weise mit oder ohne Zusatz von Salzen oder Säuren der Sehutzkolloiden 3/4 bis 1 Stunde lang bei 60-70 C gefärbt. Die erhaltene kräftige rotbraun Färbung besitzt gute Echtheiteigenschaften.
2. 1 kg Azetatseide wird in der im Beispiel 1 beschriebenen Weise mit 20 g des Farbstoffes
EMI2.1
gefärbt. Man erhält ein Gelbbraun von gleichfalls guten Echtheitseigenschaften.
Ähnliche Färbungen werden mit Farbstoffen folgender Konstitution erzielt :
EMI2.2
<Desc / Clms Page number 1>
Process for the production of brown colorations on cellulose esters and ethers.
EMI1.1
EMI1.2
In formula l), 2 X denotes nitro groups, the 3rd X a carboxyl group. In formula 2), 2 X represent nitro groups, the 3rd X represents any substituent. Free sulfo groups should be excluded from the formula. The dyes can also contain other groups such as OH, NH2, CH3, etc. It was in no way to be foreseen that these dyes would give strong colorations on acetyl cellulose, especially not because the analogous dyes without a carboxyl group do not, or are practically unusable, pull on acetate silk.
The dyes can e.g. B. be prepared in such a way that one Dinitrohalogenaryle or
Dinitrohaloarylcarboxylic acids, the halogen of which is exchangeable, condensed with unsulfated amidodiphenylamines or amidodiphenylamine carboxylic acids, advantageously in the presence of acid-binding agents.
Examples:
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<Desc / Clms Page number 2>
contains, colored in the usual way with or without the addition of salts or acids of the protective colloids for 3/4 to 1 hour at 60-70 C. The strong red-brown coloration obtained has good fastness properties.
2. 1 kg of acetate silk is in the manner described in Example 1 with 20 g of the dye
EMI2.1
colored. A yellow-brown with equally good fastness properties is obtained.
Similar colorations are achieved with dyes of the following constitution:
EMI2.2
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE113985X | 1926-10-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT113985B true AT113985B (en) | 1929-08-10 |
Family
ID=29276490
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT113985D AT113985B (en) | 1926-10-18 | 1927-10-07 | Process for the production of brown colorations on cellulose esters and ethers. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT113985B (en) |
-
1927
- 1927-10-07 AT AT113985D patent/AT113985B/en active
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