CH188884A - Process for the preparation of a chromable azo dye. - Google Patents
Process for the preparation of a chromable azo dye.Info
- Publication number
- CH188884A CH188884A CH188884DA CH188884A CH 188884 A CH188884 A CH 188884A CH 188884D A CH188884D A CH 188884DA CH 188884 A CH188884 A CH 188884A
- Authority
- CH
- Switzerland
- Prior art keywords
- red
- azo dye
- preparation
- chromable
- dye
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/02—Rocking chairs
- A47C3/021—Rocking chairs having elastic frames
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C5/00—Chairs of special materials
Landscapes
- Tables And Desks Characterized By Structural Shape (AREA)
- Securing Of Glass Panes Or The Like (AREA)
- Coloring (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Description
Verfaliren zur Herstellung eines ehromierbaren Azofarbstofes. Es wurde gefunden, dass man chromier- bare Azofarbstoffe dadurch herstellen kann, dass man diazotierte Amine der allgemeinen Formel
EMI0001.0009
in der die Hydroxyl- und Carboxylgruppe in o-Stellung zueinander stehen und in der die Wasserstoffatome der Benzolkerne durch Substituenten, z.
B. durch Halogen, Alkyl, Alkogy, die Nitrogruppe und die Acyl- aminogruppe, ersetzt sein können, mit Pyr- azolonen oder ihren Substitutionsprodukten oder sauer mit Sulfonsäunen des 2-Naphthyl- amins kuppelt, -die in 8-.Stellung durch eine Hydroxylgruppe substituiert sein können.
Man erhält auf diese Weise gelbe bezw. rote bis violette Chromierfarbstoffe von sehr guten Echtheitseigenschaften, die sich vor bekannten Farbstoffen ähnlicher Konstitu- tion durch bessere Lichtechtheit bezw. bes seres Egalisieren auszeichnen.
Verbindungen der oben angegebenen all gemeinen Formel lassen sich entweder durch Kondensation der entsprechenden Nitroben- zylchloride mit geeignet substituierten Aryl- sulfinsäuren und nachfolgende Reduktion oder durch Nitrieren geeignet substituierter Phenylbenzylsulfone und Reduktion her stellen.
Gegenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung eines chro- mierbaren Azofarbstoffes. Es ist dadurch gekennzeichnet, dass man die Diazoverbin- dung des Amins der Formel
EMI0001.0062
mit 2-Amino-8-naphthol-6-sulfonsäure in saurem Medium kuppelt. Der erhaltene Farbstoff stellt ein rotes Pulver dar, das sich in Wasser mit gelb roter, in konzentrierter Schwefelsäure mit violetter Farbe löst.
Er färbt Wolle beim Nachbehandeln mit Chromsalzen gleich mässig in klaren,' gelbstickig roten Tönen von guten Echtheitseigenschaften. <I>Beispiel:</I> 135 g der Aminoverbindung der Formel
EMI0002.0005
(hergestellt durch Kondensation von o- Nitrobenzylchlorid mit Salicylsulfinsäure und nachfolgende Reduktion) werden in 1 Liter Wasser mit Natronlauge gelöst. Zu der Lösung werden 30 g Natriumnitrit ge fügt.
Dann 153t man die Lösung langsam in ein Gemisch von 30'0 cm' konzentrierter Salzsäure -E- 1 kg Eis einlaufen. Zu der so erhaltenen Diazoverbindung gibt man unter Rühren eine Paste von 2-Amino-8-naphthol- 6-sulfonsäure, entsprechend 120 g reiner Säure. Die Kupplung beginnt bereits bei kongosaurer Reaktion und wird nach einiger Zeit durch Zutropfen von Natriumacetat- lösung beendet.
Zur Abscheidung des Farb stoffes wird die Kupplung sodaalkalisch ge macht, auf 60 bis<B>70'</B> angewärmt und mit Kochsalz versetzt. Der nach Erkalten abge schiedene Farbstoff wird abgesaugt und ge trocknet. Er stellt ein rotes Pulver dar, wel ches sich in Wasser mit gelbroter, in kon zentrierter Schwefelsäure mit violetter Farbe löst. Der neue Farbstoff färbt Wolle beim Nachbehandeln mit Chromsalzen gleich mässig in klaren, gelbstickig roten Tönen von guten Echtheitseigenschaften.
Procedure for the production of an honorable azo dye. It has been found that chromable azo dyes can be prepared by using diazotized amines of the general formula
EMI0001.0009
in which the hydroxyl and carboxyl groups are in the o-position to one another and in which the hydrogen atoms of the benzene nuclei are replaced by substituents, e.g.
B. by halogen, alkyl, alkogy, the nitro group and the acylamino group, can be replaced with pyrazolones or their substitution products or acidic with sulfonic acids of 2-naphthylamine, -those in the 8th position by a hydroxyl group can be substituted.
You get in this way yellow respectively. red to violet chroming dyes with very good fastness properties, which stand out from known dyes of a similar constitution by better light fastness and better light fastness. better equalization.
Compounds of the general formula given above can be prepared either by condensation of the corresponding nitrobenzyl chlorides with suitably substituted arylsulfinic acids and subsequent reduction or by nitration of suitably substituted phenylbenzylsulfones and reduction.
The present patent relates to a process for the production of a chromable azo dye. It is characterized in that the diazo compound of the amine of the formula
EMI0001.0062
with 2-amino-8-naphthol-6-sulfonic acid in acidic medium. The dye obtained is a red powder which dissolves in water with a yellow-red color, and in concentrated sulfuric acid with a purple color.
When it is aftertreated with chromium salts, it dyes wool evenly in clear, yellowish-red shades with good fastness properties. <I> Example: </I> 135 g of the amino compound of the formula
EMI0002.0005
(produced by condensation of o-nitrobenzyl chloride with salicylsulfinic acid and subsequent reduction) are dissolved in 1 liter of water with sodium hydroxide solution. 30 g of sodium nitrite are added to the solution.
The solution is then slowly run into a mixture of 30 cm 'concentrated hydrochloric acid -E- 1 kg of ice. A paste of 2-amino-8-naphthol-6-sulfonic acid, corresponding to 120 g of pure acid, is added to the diazo compound thus obtained, while stirring. The coupling begins as soon as the Congo acid reaction occurs and is terminated after some time by the dropwise addition of sodium acetate solution.
To separate the dye, the coupling is made alkaline with soda, warmed to between 60 and 70 'and mixed with salt. The dyestuff which separates out after cooling is filtered off with suction and dried. It is a red powder which dissolves in water with yellow-red color, and in concentrated sulfuric acid with purple color. The new dye evenly dyes wool when it is aftertreated with chromium salts in clear, yellowish-red tones with good fastness properties.
Claims (1)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE188884X | 1935-01-12 | ||
DEL87910D DE662762C (en) | 1935-01-12 | 1935-04-15 | Furniture with a frame made of resilient material |
CH188884T | 1935-12-27 | ||
DEL90120D DE666711C (en) | 1935-01-12 | 1936-04-07 | Furniture with a frame made of resilient material |
Publications (1)
Publication Number | Publication Date |
---|---|
CH188884A true CH188884A (en) | 1937-01-31 |
Family
ID=41795362
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH188884D CH188884A (en) | 1935-01-12 | 1935-12-27 | Process for the preparation of a chromable azo dye. |
CH188841D CH188841A (en) | 1935-01-12 | 1936-04-14 | Spring supports, in particular for seating furniture. |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH188841D CH188841A (en) | 1935-01-12 | 1936-04-14 | Spring supports, in particular for seating furniture. |
Country Status (5)
Country | Link |
---|---|
CH (2) | CH188884A (en) |
DE (2) | DE662762C (en) |
ES (1) | ES141987A1 (en) |
FR (1) | FR804951A (en) |
GB (1) | GB467294A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3617298A1 (en) * | 1986-05-23 | 1987-11-26 | Ver Spezialmoebel Verwalt | SEAT, IN PARTICULAR CHAIR |
US4946224A (en) * | 1988-03-21 | 1990-08-07 | Leib Roger K | Combination wood-metal chair |
DE4239821C2 (en) * | 1991-11-26 | 1995-02-16 | Stefan Recknagel | Kit for the production of one or more seats |
-
1935
- 1935-04-15 DE DEL87910D patent/DE662762C/en not_active Expired
- 1935-12-27 CH CH188884D patent/CH188884A/en unknown
-
1936
- 1936-04-07 DE DEL90120D patent/DE666711C/en not_active Expired
- 1936-04-11 ES ES0141987A patent/ES141987A1/en not_active Expired
- 1936-04-14 GB GB10690/36A patent/GB467294A/en not_active Expired
- 1936-04-14 CH CH188841D patent/CH188841A/en unknown
- 1936-04-15 FR FR804951D patent/FR804951A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB467294A (en) | 1937-06-15 |
CH188841A (en) | 1937-01-31 |
FR804951A (en) | 1936-11-06 |
ES141987A1 (en) | 1936-08-16 |
DE662762C (en) | 1938-07-21 |
DE666711C (en) | 1938-10-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH238454A (en) | Process for the preparation of a copper-compatible polyazo dye. | |
CH188884A (en) | Process for the preparation of a chromable azo dye. | |
DE579840C (en) | Process for the production of azo dyes | |
DE671287C (en) | Process for the production of azo dyes | |
AT82760B (en) | Method for the preparation of stain-coloring leukotriarylmethanazo dyes. | |
DE545440C (en) | Process for the preparation of disazo dyes | |
AT106453B (en) | Process for the preparation of related disazo dyes. | |
CH192851A (en) | Process for the preparation of a chromable monoazo dye. | |
CH190617A (en) | Process for the preparation of a chromable azo dye. | |
CH204711A (en) | Process for the preparation of a disazo dye. | |
CH132803A (en) | Process for the preparation of a stain dye. | |
CH199787A (en) | Process for the preparation of a disazo dye. | |
CH137950A (en) | Process for the preparation of a new disazo dye. | |
CH229358A (en) | Process for the preparation of a trisazo dye. | |
CH267278A (en) | Process for the preparation of a copper-compatible polyazo dye. | |
CH203866A (en) | Process for the preparation of a disazo dye. | |
CH196534A (en) | Process for the preparation of a chromable monoazo dye. | |
CH199368A (en) | Process for the preparation of an azo dye. | |
CH199371A (en) | Process for the preparation of an azo dye. | |
CH235451A (en) | Process for the preparation of a trisazo dye. | |
CH267283A (en) | Process for the preparation of a copper-compatible polyazo dye. | |
CH225560A (en) | Process for the production of a new azo dye. | |
CH267284A (en) | Process for the preparation of a copper-compatible polyazo dye. | |
CH180695A (en) | Process for the preparation of a new, copper-containing azo dye. | |
CH267279A (en) | Process for the preparation of a copper-compatible polyazo dye. |