DE942221C - Process for the preparation of water-insoluble monoazo dyes - Google Patents

Process for the preparation of water-insoluble monoazo dyes

Info

Publication number
DE942221C
DE942221C DEF14049A DEF0014049A DE942221C DE 942221 C DE942221 C DE 942221C DE F14049 A DEF14049 A DE F14049A DE F0014049 A DEF0014049 A DE F0014049A DE 942221 C DE942221 C DE 942221C
Authority
DE
Germany
Prior art keywords
red
amino
water
methylbenzene
monoazo dyes
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.)
Expired
Application number
DEF14049A
Other languages
German (de)
Inventor
Dr Winfried Kruckenberg
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
Bayer AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Priority to DEF14049A priority Critical patent/DE942221C/en
Application granted granted Critical
Publication of DE942221C publication Critical patent/DE942221C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B29/00Monoazo dyes prepared by diazotising and coupling
    • C09B29/06Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
    • C09B29/08Amino benzenes

Description

Verfahren zur Herstellung von wasserunlöslichen Monoazofarbstoffen Es wurde gefunden, daß man wertvolle wasserunlösliche Monoazofarbstoffe erhält, wenn man diazotierte Dicyananiline, vorzugsweise 2, 4-Dicyananiline, die im Kern durch Alkyl und/oder Halogen substituiert sein können, mit in p-Stellung ztir Aminogruppe kuppelnden aromatischen Aminen vereinigt, in denen ein Wasserstoffatom der Aminogruppe durch einen Oxalkylrest und das andere Wasserstoffatom durch einen Alkyl- oder Oxalkylrest ersetzt ist, und dabei. die Komponenten so wählt, daß sie keine Sulfonsäure- oder Carbonsäuregruppen enthalten.Process for the preparation of water-insoluble monoazo dyes It has been found that valuable water-insoluble monoazo dyes are obtained, if you diazotized dicyananilines, preferably 2, 4-dicyananilines, the core can be substituted by alkyl and / or halogen, with an amino group in the p-position Coupling aromatic amines combined in which one hydrogen atom of the amino group by an oxalkyl radical and the other hydrogen atom by an alkyl or oxalkyl radical is replaced, and at it. the components are chosen so that they are no sulfonic acid or Contain carboxylic acid groups.

Die neuen wasserunlöslichen Monoazofarbstoffe ergeben klare licht- und waschechte rote bis rotviolette Färbungen auf Polyamid- und Acetatkunstseidefasern. Die neuen Farbstoffe zeichnen sich dadurch aus, daß man mit ihnen bis zu bordoroten Tönen auf beiden Faserarten gleiche oder nahezu gleiche Farbtöne von besonderer Klarheit und gleicher oder nahezu gleicher Lichtechtheit erzielen kann. Hierdurch unterscheiden sie sich in vorteilhafter Weise von den bekannten vergleichbaren wasserunlöslichen Monoazofarbstoffen, die in der Diazokomponente neben einer Cyangruppe in o- oder/und p-Stellung eine Nitrogruppe als Substituenten enthalten.The new water-insoluble monoazo dyes produce clear, light- and washfast red to red-violet dyeings on polyamide and acetate synthetic silk fibers. The new dyes are distinguished by the fact that they can be used to create a bordeaux red color Tones of the same or almost the same color tones on both types of fiber are special Can achieve clarity and the same or almost the same light fastness. Through this they differ in an advantageous manner from the known, comparable water-insoluble ones Monoazo dyes in the diazo component in addition to a cyano group in o- and / or p-position contain a nitro group as a substituent.

Beispiel z 14,3 Gewichtsteile =-Amino-2, 4-dicyanbenzol werden in 5o ccm konzentrierter Salzsäure gelöst und unte gutem Rühren und Kühlen 35 Gewichtsteile 2o°/jge Natriumnitritlösung zulaufen gelassen. Nach Beendigung der Diazotierung wird die Lösung filtriert, mit verdünnter Natronlauge oder Sodalösung teilweise neutralisiert (kongoviolett) und. mit einer Lösung von 19,5 Gewichtsteilen i-N, N-Di(oxäthyl)-amino-3-methylbenzol in verdünnter Salzsäure vereinigt. Die schon beginnende Kupplung wird durch Zugabe von Natriumacetat zu Ende geführt, wobei sich der Azofarbstoff als Pulver abscheidet. Der Farbstoff wird -filtriert und neutral gewaschen. Er bildet im trockenen Zustand ein schwarzrotes Pulver, das sich in- organischen Lösungsmitteln, wie Aceton oder Alkohol, mit roter Farbe löst. Acetatkunstseide und Polyamidfaser färbt er, durch geeignete Zusätze in feine Verteilung gebracht, in klaren roten Tönen.Example z 14.3 parts by weight = -amino-2, 4-dicyanobenzene are in Dissolved 50 cc of concentrated hydrochloric acid and, with thorough stirring and cooling, 35 parts by weight 20% sodium nitrite solution was allowed to run in. After the end of the diazotization the solution is filtered, partially with dilute sodium hydroxide solution or soda solution neutralized (Congo violet) and. with a solution of 19.5 parts by weight of i-N, N-di (oxethyl) -amino-3-methylbenzene combined in dilute hydrochloric acid. The coupling, which is already beginning, is carried out by adding of sodium acetate to the end, with the azo dye separating out as a powder. The dye is filtered and washed neutral. It forms when dry a black-red powder that is in organic solvents such as acetone or Alcohol, dissolves with red color. He dyes acetate rayon and polyamide fiber through suitable additives in fine distribution, in clear red tones.

3ei.spiel 2 In gleicher Weise werden=5,7 Gewichtsteile i-Amino-2, 4-dicyan-6-methylbenzol diazotiert und mit 19,5 Gewichtsteilen i-N, N-Di-(oxäthyl)-amino-3-methylbenzol gekuppelt. Der entstandene Farbstoff färbt Acetatkunstseide in stark blaustichigen roten und Polyamidfasern in rubinroten Tönen.3ei.spiel 2 In the same way = 5.7 parts by weight of i-amino-2, 4-dicyan-6-methylbenzene diazotized and 19.5 parts by weight of i-N, N-di- (oxethyl) -amino-3-methylbenzene coupled. The resulting dye dyes acetate rayon with a strong bluish tinge red and polyamide fibers in ruby red tones.

Beispiel 3 In gleicher Weise ergibt i-Aniino-2, 4-dicyan-3, 6-dimethylbenzol mit i-N, N-Di-(ox'äthyl)-amino-3-methylbenzol einen Farbstoff, der Acetatkunstseide und Polyamidfasern in roten Tönen färbt.Example 3 In the same way, i-amino-2, 4-dicyano-3, 6-dimethylbenzene is obtained with i-N, N-di- (ox'äthyl) -amino-3-methylbenzene a dye, the acetate rayon and dyes polyamide fibers in red tones.

Die folgende Tabelle enthält eine Rehre weiterer Diazo- und Azokomponenten, die nach den Angaben der vorhergehenden Beispiele zu Azofarbstoffen gekuppelt werden können, und außerdem Angaben über die färberischen Eigenschaften der im Einzelfall entstehenden Azofarbstoffe. Diazokomponente Azokomponente Farbton Acetatkunstseide Polyamidfaser i-Amino-2, 4-cyanbenzol i-N, N-Di-(oxäthyl)-amino- Blaustichigrot Blaustichigrot. 3-methylbenzol desgl. i-N-Butyl-N-oxäthylaniino- Blaustichigrot Blaustichigrot 3-methylbenzol desgl.. i-N-Äthyl-N-oxäthylamino- Rot Rot Benzol desgl. i-N, N-Di-(oxäthyl)-amino- etwas gelbstichig Rot etwas blaustichig Rot Benzol desgl. i-N-Butyl-N-oxäthylamino- Rot- etwas blaustichig Rot Benzol i Amino-2, 4-dicyan- i-N, N-Di-(oxäthyl)-amino- Blaustichigrot Rubinrot 6-methylbenzol 3-methylbenzol desgl. i-N,N-Äthyl-N-oxäthyl- . Gelbstichigrot Rot aminobenzol desgl. i-N-Butyl-N-oxäthylamino- Blaustichigrot Rubinrot 3-methylbenzol - z Amino-2, 4-dicyan- i-N, N-Di-(oxäthyl)-amino- Rot Bordorot 3, 6-dimethylbenzol 3-methylbenzol desgl. i-N-Butyl-N-oxäthylamino- Blaustichigrot Bordorot 3-methylbenzol i-Amino-2, 6-dicyan- i-N, N-Di-(oxäthyl)-amino- Gelbstichigrot Blaustichigrot 4-chlorbenzol 3-methylbenzol i-Amino-2, 4-dicyan- i-N-Butyl-N-oxäthylamino- Rot Bordorot 6-cblorbenzol 3-methylbenzol The following table contains a number of further diazo and azo components which can be coupled to azo dyes according to the information in the preceding examples, and also information on the coloring properties of the azo dyes formed in individual cases. Diazo component Azo component hue Acetate rayon polyamide fiber i-Amino-2,4-cyanobenzene inN, N-di- (oxethyl) -amino- bluish red bluish red. 3-methylbenzene Likewise. iN-Butyl-N-oxäthylaniino- bluish-tint blue-tint blue 3-methylbenzene likewise .. iN-ethyl-N-oxäthylamino- red red benzene Likewise iN, N-di- (oxäthyl) -amino- somewhat yellowish red somewhat bluish red benzene Likewise. iN-Butyl-N-oxäthylamino- Red- slightly bluish red benzene i Amino-2, 4-dicyano-iN, N-di- (oxethyl) -amino- bluish tinge ruby red 6-methylbenzene 3-methylbenzene the same. iN, N-ethyl-N-oxäthyl-. Yellow-tinged red aminobenzene Likewise. iN-Butyl-N-oxäthylamino- bluish tinge ruby red 3-methylbenzene - z Amino-2, 4-dicyano-iN, N-di- (oxethyl) -amino- red Bordo red 3,6-dimethylbenzene 3-methylbenzene Likewise. iN-Butyl-N-oxäthylamino- Bluetichigrot Bordo red 3-methylbenzene i-Amino-2, 6-dicyano-iN, N-di (oxethyl) -amino- yellowish red bluish red 4-chlorobenzene 3-methylbenzene i-Amino-2, 4-dicyano-iN-butyl-N-oxäthylamino-red Bordo red 6-chlorobenzene 3-methylbenzene

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von wasserunlöslichen Monoazofarbstoffen, dadurch gekennzeichnet, daß man dianotierte Dicyananiline, vorzugsweise 2, 4-Dicyanäniline, die im Kern durch Alkyl und/oder Halogensubstituiert sein können, mit in p-Stellung zurAminogruppe kuppelnden aromatischenAminen, in denen ein Wasserstoffatom der Aminogruppe durch einen Oxalkylrest und das andere Wasserstoffatom durch einen Alkyl- oder Oxalkylrest ersetzt ist, vereinigt und dabei die Komponenten so wählt, daß sie keine Sulfonsäure- oder Carbonsäuregruppen enthalten. Angezogene Druckschriften: Deutsche Patentschrift Nr. 648 768.PATENT CLAIM: Process for the production of water-insoluble monoazo dyes, characterized in that dianotated dicyananilines, preferably 2,4-dicyananilines, which can be substituted in the nucleus by alkyl and / or halogen, with in the p-position aromatic amines coupling to the amino group in which one hydrogen atom of the amino group by an oxalkyl radical and the other hydrogen atom by an alkyl or oxalkyl radical is replaced, combined and choosing the components so that they do not contain sulfonic acid or contain carboxylic acid groups. Referred publications: German patent specification No. 648 768.
DEF14049A 1954-02-28 1954-02-28 Process for the preparation of water-insoluble monoazo dyes Expired DE942221C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF14049A DE942221C (en) 1954-02-28 1954-02-28 Process for the preparation of water-insoluble monoazo dyes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF14049A DE942221C (en) 1954-02-28 1954-02-28 Process for the preparation of water-insoluble monoazo dyes

Publications (1)

Publication Number Publication Date
DE942221C true DE942221C (en) 1956-04-26

Family

ID=7087474

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF14049A Expired DE942221C (en) 1954-02-28 1954-02-28 Process for the preparation of water-insoluble monoazo dyes

Country Status (1)

Country Link
DE (1) DE942221C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1126543B (en) * 1958-07-03 1962-03-29 Bayer Ag Process for the preparation of water-insoluble azo dyes
DE1290915B (en) * 1966-02-17 1969-03-20 Bayer Ag Process for dyeing and printing fiber materials made from aromatic polyesters and cellulose acetates

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE648768C (en) * 1934-02-23 1937-08-11 Chemische Ind Ges Process for the production of azo dyes

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE648768C (en) * 1934-02-23 1937-08-11 Chemische Ind Ges Process for the production of azo dyes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1126543B (en) * 1958-07-03 1962-03-29 Bayer Ag Process for the preparation of water-insoluble azo dyes
DE1290915B (en) * 1966-02-17 1969-03-20 Bayer Ag Process for dyeing and printing fiber materials made from aromatic polyesters and cellulose acetates

Similar Documents

Publication Publication Date Title
DE942221C (en) Process for the preparation of water-insoluble monoazo dyes
DE951525C (en) Process for the preparation of water-insoluble monoazo dyes
DE928902C (en) Process for the preparation of water-insoluble monoazo dyes
DE574463C (en) Process for the preparation of water-insoluble monoazo dyes
DE594326C (en) Process for the production of water-insoluble azo dyes
DE636952C (en) Process for the production of azo dyes
DE916968C (en) Process for the production of azo waste
DE953548C (en) Process for the preparation of water-insoluble monoazo dyes
DE692648C (en) Process for the production of azo dyes
DE719302C (en) Process for the preparation of disazo or polyazo dyes
DE742325C (en) Process for the preparation of trisazo dyes
DE729595C (en) Process for dyeing and printing cellulose esters and ethers
DE633266C (en) Process for the preparation of o-oxyazo dyes
DE591549C (en) Process for the production of water-insoluble azo dyes
DE683973C (en) Process for the production of water-insoluble azo dyes
DE556477C (en) Process for the preparation of azo dyes
DEF0014049MA (en)
DE513763C (en) Process for the preparation of disazo dyes suitable for coloring acetyl cellulose
DE548393C (en) Process for the preparation of monoazo dyes
DE737585C (en) Process for the preparation of water-soluble disazo dyes
DE695399C (en) Process for the preparation of monoazo dyes
DE626191C (en) Process for the production of azo dyes
DE888290C (en) Process for the preparation of monoazo dyes
CH330004A (en) Process for the preparation of water-insoluble monoazo dyes
DE655391C (en) Process for the preparation of monoazo dyes