DE589348C - Process for the production of azo dyes - Google Patents

Description

It has been found that valuable, water-insoluble azo dyes can thereby be obtained arrives that the arylides of benzo-a-oxycarbazole-ß-carboxylic acids with diazo compounds in substance or -on the fiber couples and thereby the components Chooses such that they do not have a water-solubilizing group, such as the sulfonic acid or Carboxyl group.

in * Depending on the choice "of the components dyes of various shades that, produced on the fiber, are remarkable Possess fastnesses.

The coupling components used in the process

i'g components used arylides of benzo-2-oxycarbazole "3-carboxylic acids are z. B. available according to patent 588 043.

; Example i

• Well-boiled and dried cotton yarn is ^{mixed with a solution of 3 g of 1} "(S '>6' - Benzo - 2 '- oxycarbazole - 3' - carboyl amino) -4-chlorobenzene, 10 ecm of sodium hydroxide solution

of 34 ⁰ Be and 10 ecm Turkish red oil 5% impregnated in the liter, thoroughly wound and, without drying, developed, rinsed and, without drying, in a diazo solution truncated with acetate, which contains 2 g i-methyl-4-chloro-2-aminobenzene per liter soaped. You get a beautiful and real yellowish brown. ■

Example 2

Well-boiled and dried cotton yarn is mixed with a solution of 1.2 g ι- (7 ', 8'-benzo-2'-oxycarbazole-3'-carboylamino) -4-methoxybenzene, 10 ecm caustic soda solution of 34 ° Be and 10 ecm Turkish red oil Impregnated by 5% per liter, carefully wound and, without drying, in one diazo solution blunted with acetate, which contains 2 g of 2-chloro-i-aminobenzene per liter, developed, rinsed and soaped. You get a beautiful and very real yellow-brown.

A number of others will now be made available by the present process Dyes and their shades are listed.

Coupling component Diazo component hue ^τ ~ {5 '> 6'-Benzo-2'-oxycarbazole-3'-car-
boylamino) -4-chlorobenzene 3-chloro-i-amiobenzene
2-chloro-i-aminobenzene
4-nitro-i-methoxy-2-aminobenzene khaki brown
yellow-brown
Brown ,

") The patent seeker stated as the inventor:

Dr. Wilhelm Neelmeier in Leverkusen and- Dr. Heinrich Morschel in Cologne-Deuts.

Coupling component Diazo component hue ι - (5 ', 6' -Benzo-2 '-oxycarbazole ^' - car- 4-chloro-i-methyl-2-aminobenzene yellowish 5 boylamino) -3-chlorobenzene Brown 2-chloro-i-aniinobenzene yellow-brown 5-chloro-i-methyl-2-aminobenzene Brown 5-nitro-i-methoxy-2-aminobenzene reddish IO Brown ι - (5 ', 6' - Benzo - 2 '- oxycarbazole-3' - car - 3-chloro-i-aminobenzene khaki brown boylamino) -2-methylbenzene 2-chloro-i-aminobenzene Brown 4-chloro-i-methyl-2-aminobenzene yellow-brown 15th 5-nitro-i-methoxy-2-aminobenzene reddish
Brown ι - (Y, 8'-Benzo-2'-oxycarbazole-2'-car- 4-chloro-i-methyl-2-aminobenzene Brown boylamino) -4-methoxybenzene 2-chloro-4-benzoylamino-5-methoxy- reddish 20th i-amhiobenzene Brown i- (7 ', 8'-Benzo-2'-oxycarbazole-3'-car- 2, 5-dichloro-i-aminobenzene orange brown boj'lamino) -2-methyl-4-methoxybenzene 2,3'-dimethyl-4-aminoazobenzene reddish
dark brown 2 - chloro ^ -benzoylamino-S-methoxy- reddish 25th i-aminobenzene Brown i- (7 ', 8'-Benzo-2'-oxycarbazole-3'-car- 4-chloro-2-amino-i-methylbenzene yellow-brown boylamino) -3-chlorobenzene 5-chloro-2-amino-i-methylbenzene Brown 5-nitro-2-amino-i-methoxybenzene red-brown 30th i- (Y, 8'-Benzo-2'-oxycarbazole-3'-car- 4-chloro-2-amino-i-methylbenzene yellow-brown boylamino) -2-chlorobenzene 2 - chloro-4-benzoylarnino-5-methoxy- reddish i-aminobenzene Brown 4-nitro-2-amino-i-methylbenzene orange brown 35 ι - (Y, 8 '- Benzo - 2' - oxycarbazole - 3 '- car - 4-chloro-2-amino-i-methylbenzene orange brown boylamino) -4-chlorobenzene 3, 2'-dimethyl-4-aminoazobenzene reddish Brown i- (7 ', 8'-Benzo-2'-oxycarbazole-3'-car- 3-nitro-i-aminobenzene reddish 40 boylamino) -2-methyl-4-chlorobenzene yellow-brown 2,5-dichloro-i-aminobenzene orange brown z, 3'-Dimethyl-4-aminoazobenzene red-brown

Claims (1)

45 claim: Process for the preparation of water-insoluble azo dyes in substance or on the fiber, characterized in that the arylides of benzo- 2-oxycarbazole-3-carboxylic acids in substance or coupling it to the fiber with diazo compounds and choosing the components so that they are not water-soluble making group included.