CH204146A - Process for the preparation of a water-soluble disazo dye. - Google Patents
Process for the preparation of a water-soluble disazo dye.Info
- Publication number
- CH204146A CH204146A CH204146DA CH204146A CH 204146 A CH204146 A CH 204146A CH 204146D A CH204146D A CH 204146DA CH 204146 A CH204146 A CH 204146A
- Authority
- CH
- Switzerland
- Prior art keywords
- water
- preparation
- disazo dye
- soluble disazo
- dye
- Prior art date
Links
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 4
- LTASFWDWBYFZQQ-UHFFFAOYSA-N 2-amino-5-nitrobenzenesulfonic acid Chemical compound NC1=CC=C([N+]([O-])=O)C=C1S(O)(=O)=O LTASFWDWBYFZQQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000010985 leather Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000975 dye Substances 0.000 claims 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 150000008049 diazo compounds Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B33/00—Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling
- C09B33/02—Disazo dyes
- C09B33/04—Disazo dyes in which the coupling component is a dihydroxy or polyhydroxy compound
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
<B>Zusatzpatent</B> zum Hauptpatent Nr. 200675. Verfahren zur Herstellung eines wasserlöslichen Disazofarbstoffes. Gegenstand des vorliegenden Zusatzpaten tes ist ein Verfahren zur Herstellung eines wasserlöslichen Disazofarbstoffes, welches dadurch gekennzeichnet ist, dass man 1,
3- Diogybenzol mit 1 Mol. diazotierter 4-Amino- 1-benzylsulfonsäure und 1 Mol. diazotierter 4-Nitro -1 - aminobenzol - 2 - sulfonsäure ver einigt.
BErlspiel: Die aus 18,7 Gewichtsteilen 4-Amino-1- benzy1sulfonsäure in der üblichen Weise hergestellte wässerige Lösung der Diazover- bindung fliesst bei 0 C unter Rühren in eine wässerige Lösung von 11 Gewichtsteilen 1,3 Diogybenzol (M. G.110) in Gegenwart von Natriumcarbonat. Nach beendeter Kupplung fliesst zu dem gebildeten Farbstoff allmäh lich eine aus 21,8 Gewichtsteilen 4-Nitro-l- aminobenzol-2-sulfonsäure (M.
G. 218) er haltene Diazosuspension. In sodaalkalischem Medium ist die Bildung des Disazofarbstof- fes sehr rasch beendet. Der Farbstoff wird aasgesalzen, isoliert und getrocknet.
Er bildet ein dunkelbraunes Pulver, das sich in Wasser mit bräunlich gelber Farbe löst und Leder in bräunlich gelben Tönen ein färbt.
<B> Additional patent </B> to main patent no. 200675. Process for the production of a water-soluble disazo dye. The subject of the present additional patent is a process for the production of a water-soluble disazo dye, which is characterized in that 1,
3- Diogybenzene with 1 mole. Diazotized 4-amino-1-benzylsulfonic acid and 1 mole. Diazotized 4-nitro-1-aminobenzene-2-sulfonic acid combined.
BErlspiel: The aqueous solution of the diazo compound prepared in the usual way from 18.7 parts by weight of 4-amino-1-benzy1sulfonic acid flows at 0 C with stirring into an aqueous solution of 11 parts by weight of 1.3 diogybenzene (MG110) in the presence of Sodium. After the coupling has ended, a mixture of 21.8 parts by weight of 4-nitro-l-aminobenzene-2-sulfonic acid (M.
G. 218) he received diazo suspension. In a soda-alkaline medium the formation of the disazo dye ends very quickly. The dye is salted with carrion, isolated and dried.
It forms a dark brown powder that dissolves in water with a brownish yellow color and colors leather in brownish yellow tones.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE204146X | 1936-09-04 | ||
| CH200675T | 1938-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH204146A true CH204146A (en) | 1939-04-15 |
Family
ID=25723567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH204146D CH204146A (en) | 1936-09-04 | 1937-08-19 | Process for the preparation of a water-soluble disazo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH204146A (en) |
-
1937
- 1937-08-19 CH CH204146D patent/CH204146A/en unknown
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