DE176617C - - Google Patents
Info
- Publication number
- DE176617C DE176617C DENDAT176617D DE176617DA DE176617C DE 176617 C DE176617 C DE 176617C DE NDAT176617 D DENDAT176617 D DE NDAT176617D DE 176617D A DE176617D A DE 176617DA DE 176617 C DE176617 C DE 176617C
- Authority
- DE
- Germany
- Prior art keywords
- indigo
- solution
- halogen
- homologues
- white
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 241001062009 Indigofera Species 0.000 claims description 11
- 235000000177 Indigofera tinctoria Nutrition 0.000 claims description 11
- 229910052736 halogen Inorganic materials 0.000 claims description 5
- 150000002367 halogens Chemical class 0.000 claims description 5
- VIFKLIUAPGUEBV-UHFFFAOYSA-N 2-(3-hydroxy-1H-indol-2-yl)-1H-indol-3-ol Chemical compound N1C2=CC=CC=C2C(O)=C1C1=C(O)C2=CC=CC=C2N1 VIFKLIUAPGUEBV-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 2
- 229940097275 Indigo Drugs 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- YCBBRNFFVPXEGQ-BUHFOSPRSA-N (2E)-5-bromo-2-(5-bromo-3-oxo-1H-indol-2-ylidene)-1H-indol-3-one Chemical compound N/1C2=CC=C(Br)C=C2C(=O)C\1=C1/NC2=CC=C(Br)C=C2C1=O YCBBRNFFVPXEGQ-BUHFOSPRSA-N 0.000 description 2
- YEQRASMGLPZYDE-UHFFFAOYSA-N Indoxyl Chemical group C1=CC=C[C]2C(O)=CN=C21 YEQRASMGLPZYDE-UHFFFAOYSA-N 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 239000003638 reducing agent Substances 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001603 reducing Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
- C09B67/0071—Process features in the making of dyestuff preparations; Dehydrating agents; Dispersing agents; Dustfree compositions
- C09B67/0077—Preparations with possibly reduced vat, sulfur or indigo dyes
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Indole Compounds (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
-M 176617 KLASSE 12p. GRUPPE -M 176617 CLASS 12p. GROUP
Brom- und Chlorindigo sowie deren Homologe lassen sich durch die bekannten Reduktionsmittel in Indigweißverbindungen überführen. Diese Reduktionsmittel haben jedoch den großen Nachteil, den Halogenindigo teilweise zu dem entsprechenden Indigo zu reduzieren, womit natürlich ein erheblicher Verlust an dem wertvollen Halogenindigo verbunden ist.Bromine and chlorine indigo and their homologues can be eliminated by the known reducing agents convert into indigo white compounds. However, these reducing agents have the major disadvantage, some of the halogen indigo to reduce the corresponding indigo, which of course means a considerable loss is connected to the valuable halogen indigo.
IQ Es wurde nun gefunden, daß man mit außerordentlicher Leichtigkeit sämtliche Halogenindigos sowie deren Homologe vermittels einer Lösung von Indigweiß oder den Homologen desselben in Natronlauge reduzieren kann. Bei dieser Operation geht Halogenindigo in Lösung, während Indigo ausfällt. Die Operation verläuft nahezu quantitativ. Ein Verlust an Brom bezw. Chlor ist bei diesem Verfahren naturgemäß ausgeschlossen.IQ It has now been found that all halogen indigos as well as their homologues by means of a solution of indigenous white or the homologues can reduce the same in caustic soda. In this operation, halogen indigo goes in solution as indigo precipitates. The operation is almost quantitative. A loss of bromine or Chlorine is with naturally excluded from this procedure.
Dieser Reaktionsverlauf ist völlig überraschend. Zwar hat man Indigo schon mit Indoxyl bezw. Indoxylsäure reduziert, doch war hieraus nicht zu entnehmen, daß auch das Oxydationsprodukt des Indoxyls, nämlich das Indigweiß, gegenüber gewissen Indigoderivaten noch reduzierende Eigenschaften aufweisen werde.This course of the reaction is completely surprising. You already have indigo with you Indoxyl or Indoxylic acid reduced, but this did not suggest that either the oxidation product of indoxyl, namely indigo white, compared to certain indigo derivatives will still have reducing properties.
100 kg einer Indigweißlösung von 20 Prozent werden auf 80 bis ioo° erwärmt und unter Umrühren 20 kg Bromindigo zugegeben. Nach ungefähr 3 bis 4 Stunden ist die Reaktion vollendet. Man filtriert vom ausgeschiedenen Indigo ab. Die erhaltene Bromindigolösung kann sofort zum Färben verwendet werden.100 kg of an indigo white solution of 20 percent are heated to 80 to 100 ° and 20 kg of bromoindigo were added with stirring. After about 3 to 4 hours the reaction is complete accomplished. The precipitated indigo is filtered off. The bromoindigo solution obtained can be used immediately for dyeing.
Bei spiel II.Example II.
50 kg Orthotolylindigweiß werden mit 1000 kg luftfreiem Wasser angerührt und dann mittels 60 kg einer Natronlauge von 40° Be. in Lösung gebracht. Man erwärmt auf ungefähr 60 bis 700 und trägt unter fortwährendem Rühren 56 kg Chlororthotolylindigo ein. Nach 2 Stunden wird vom ausgeschiedenen Orthotolylindigo abfiltriert.50 kg of Orthotolylindigweiß are mixed with 1000 kg of air-free water and then with 60 kg of a sodium hydroxide solution of 40 ° Be. brought into solution. The mixture is heated to about 60 to 70 0 and bears with continued agitation, a 56 kg Chlororthotolylindigo. After 2 hours, the orthotolylindigo which has separated out is filtered off.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE176617C true DE176617C (en) |
Family
ID=441178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT176617D Active DE176617C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE176617C (en) |
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0
- DE DENDAT176617D patent/DE176617C/de active Active
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