GB435449A - Process for the manufacture of ethylene azo dyestuffs - Google Patents

Process for the manufacture of ethylene azo dyestuffs

Info

Publication number
GB435449A
GB435449A GB5235/34A GB523534A GB435449A GB 435449 A GB435449 A GB 435449A GB 5235/34 A GB5235/34 A GB 5235/34A GB 523534 A GB523534 A GB 523534A GB 435449 A GB435449 A GB 435449A
Authority
GB
United Kingdom
Prior art keywords
acid
group
dyes
addition products
phenylethylene
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
GB5235/34A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Publication of GB435449A publication Critical patent/GB435449A/en
Expired 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
    • C09B23/00—Methine or polymethine dyes, e.g. cyanine dyes
    • C09B23/16—Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain containing hetero atoms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Detergent Compositions (AREA)
  • Coloring (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

Ethylene azo-dyes or acid addition products thereof are prepared by coupling with diazonium salts ethylenes of the formula <FORM:0435449/IV/1> wherein R and R<1> signify aryl groups substituted by at least one group imparting a positive character (i.e. methoxy, hydroxy, amino, dimethylamino, phenylamino) and R<11> stands for a monovalent atom or group, or acid addition products thereof. Acid addition products of the dyes (carbenium salts) spontaneously or in the presence of an acid binding agent pass into the dyes themselves. In examples: (1) 2-naphthylamine-6,8-disulphonic acid is diazotized and coupled with tetramethyldiaminodiphenylethylene; the product dyes wool bordeaux-red shades from an alkaline bath, and on acidifying an intense blue shade is obtained; (2) p-nitrophenylantidiazotate is coupled (acid) with dianisylethylene. The Specification as open to inspection under Sect. 91 comprises the manufacture of ethylene azo dyes or acid addition products thereof by coupling with diazonium salts ethylenes of the above formula wherein R stands for hydrogen or a group of the type of R<1> which stands for an amphoteric auxochrome (defined as covering, inter alia, an aryl group or vinylene group) or a group imparting a positive character (see above, and R<11> stands a monovalent atom or group, or acid addition products thereof. Starting materials mentioned are a .a -phenylethylene, a p - anisyl - a - phenylethylene, a .a - diveratrylethylene, a - dimethylaminophenyl - a - phenylethylene, a .a - tetramethyldiaminodiphenyl - b - methylethylene, a .a - tetramethyldiaminodiphenyl - b - phenylethylene and a .a - diethoxynaphthylethylene as coupling components and aniline, nitraniline or a sulpho derivative, anisidine, benzidine, aminoazobenzenedisulphonic acid, naphthylamine sulphonic acid or aminoanthraquinone as diazo bodies. In a further example diazotized sulphanilic acid is coupled (acid) with tetramethyldiaminodiphenylethylene; the product dyes wool from an alkaline bath red shades changed to blue by acid. This subject-matter does not appear in the Specification as accepted.
GB5235/34A 1933-02-16 1934-02-16 Process for the manufacture of ethylene azo dyestuffs Expired GB435449A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE435449X 1933-02-16

Publications (1)

Publication Number Publication Date
GB435449A true GB435449A (en) 1935-09-16

Family

ID=6506771

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5235/34A Expired GB435449A (en) 1933-02-16 1934-02-16 Process for the manufacture of ethylene azo dyestuffs

Country Status (1)

Country Link
GB (1) GB435449A (en)

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