DE31658C - Process for the preparation of yellow azo dyes by the action of tetrazo-1 diphenyl, tetrazoditolyl and tetrazodixylyl on the oxybenzoic acids - Google Patents

Process for the preparation of yellow azo dyes by the action of tetrazo-1 diphenyl, tetrazoditolyl and tetrazodixylyl on the oxybenzoic acids

Info

Publication number
DE31658C
DE31658C DENDAT31658D DE31658DA DE31658C DE 31658 C DE31658 C DE 31658C DE NDAT31658 D DENDAT31658 D DE NDAT31658D DE 31658D A DE31658D A DE 31658DA DE 31658 C DE31658 C DE 31658C
Authority
DE
Germany
Prior art keywords
tetrazodixylyl
tetrazoditolyl
action
preparation
tetrazo
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
Application number
DENDAT31658D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Farbenfabriken Vorm Friedr Bayer and Co
Publication of DE31658C publication Critical patent/DE31658C/en
Active legal-status Critical Current

Links

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
    • C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
    • C09B35/02—Disazo dyes
    • C09B35/039—Disazo dyes characterised by the tetrazo component
    • C09B35/08—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl
    • C09B35/10—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl from two coupling components of the same type
    • C09B35/14—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl from two coupling components of the same type from hydroxy compounds
    • 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
    • C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
    • C09B35/02—Disazo dyes
    • C09B35/039—Disazo dyes characterised by the tetrazo component
    • C09B35/08—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

10 kg schwefelsaures Benzidin werden in ι 50 1 Wasser fein suspendirt, 20 kg Salzsäure von 210B. zugesetzt und mit 2 Y2 kg salpetrigsaurem Natron azotirt. Die entstandene Tetrazodiphenyllösung wird in eine Lösung von 5 bis ι ο kg reiner Salicylsäure oder einer der beiden anderen Oxybenzoesäuren in 40 kg Natronhydrat und 250 1 Wasser unter heftigem Rühren langsam einlaufen gelassen. Es fällt ein in Wasser fast vollständig unlöslicher Niederschlag aus, welcher abgeprefst und neutral gewaschen wird. Die in der Presse zurückbleibende Paste eignet sich direct zum Färben und Drucken; sie färbt ungebeizte Baumwolle im kochenden Seifenbade echt schwefelgelb.10 kg of sulphate benzidine be finely suspended in ι 50 1 water, 20 kg of hydrochloric acid 21 0 B. added and azotirt 2 Y 2 kg of soda nitrite. The resulting tetrazodiphenyl solution is slowly run into a solution of 5 to ι ο kg of pure salicylic acid or one of the other two oxybenzoic acids in 40 kg of sodium hydrate and 250 l of water with vigorous stirring. A precipitate which is almost completely insoluble in water separates out, which is pressed off and washed until neutral. The paste left in the press is suitable for dyeing and printing; it dyes unstained cotton in a boiling soap bath real sulfur yellow.

An Stelle von Tetrazodiphenyl kann das Tetrazoditolyl oder Tetrazodixylyl verwendet werden, ohne dafs im übrigen eine Aenderung im Verfahren eintritt. Die diesen Tetrazoverbindungen zu Grunde liegenden Diphenylbasen werden bekanntlich ganz analog dem Verfahren zur Herstellung des Benzidins aus Nitrotoluol bezw. Nitroxylol erhalten.Instead of tetrazodiphenyl, the tetrazoditolyl or tetrazodixylyl can be used without any change in the procedure. These tetrazo compounds It is known that the underlying diphenyl bases are made entirely analogously to the process for the preparation of benzidine Nitrotoluene or Obtain nitroxylene.

Claims (1)

Patent-Anspruch:Patent claim: Die Herstellung gelber Farbstoffe durch Einwirkung von Tetrazodiphenyl, Tetrazoditolyl und Tetrazodixylyl auf die Oxybenzoe'säuren.The production of yellow dyes by the action of tetrazodiphenyl, tetrazoditolyl and tetrazodixylyl to the oxybenzoic acids.
DENDAT31658D Process for the preparation of yellow azo dyes by the action of tetrazo-1 diphenyl, tetrazoditolyl and tetrazodixylyl on the oxybenzoic acids Active DE31658C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE31658T

Publications (1)

Publication Number Publication Date
DE31658C true DE31658C (en)

Family

ID=5622122

Family Applications (2)

Application Number Title Priority Date Filing Date
DENDAT44797D Expired - Lifetime DE44797C (en) Innovations in the process for the preparation of yellow dyes by the action of tetrazodiphenyl or tetrazoditolyl on salicylic acid
DENDAT31658D Active DE31658C (en) Process for the preparation of yellow azo dyes by the action of tetrazo-1 diphenyl, tetrazoditolyl and tetrazodixylyl on the oxybenzoic acids

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DENDAT44797D Expired - Lifetime DE44797C (en) Innovations in the process for the preparation of yellow dyes by the action of tetrazodiphenyl or tetrazoditolyl on salicylic acid

Country Status (1)

Country Link
DE (2) DE31658C (en)

Also Published As

Publication number Publication date
DE44797C (en)

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