GB967011A - New chromium complex azo dyestuff - Google Patents

New chromium complex azo dyestuff

Info

Publication number
GB967011A
GB967011A GB1424462A GB1424462A GB967011A GB 967011 A GB967011 A GB 967011A GB 1424462 A GB1424462 A GB 1424462A GB 1424462 A GB1424462 A GB 1424462A GB 967011 A GB967011 A GB 967011A
Authority
GB
United Kingdom
Prior art keywords
chromium
naphthol
mixture
chromium complex
nitro
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
GB1424462A
Inventor
Guenther Essbach
Kurt Lippold
Leo Bendl
Walter Heyne
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.)
Filmfabrik Wolfen VEB
Original Assignee
Filmfabrik Wolfen VEB
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 Filmfabrik Wolfen VEB filed Critical Filmfabrik Wolfen VEB
Priority to GB1424462A priority Critical patent/GB967011A/en
Publication of GB967011A publication Critical patent/GB967011A/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
    • C09B45/00—Complex metal compounds of azo dyes
    • C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
    • C09B45/14—Monoazo compounds
    • C09B45/16—Monoazo compounds containing chromium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Abstract

The invention comprises the 2: 1 chromium complex of an equimolar mixture of the monoazo dye from 1-amino-6-nitro-2-naphthol-4-sulphonic acid and 2-naphthol and of the monoazo dye from diazotized 2-amino-4-nitro-5-chlorphenol and 2-naphthol, and a process for the preparation thereof wherein a 1: 1-mixture of the appropriate azo dyes is treated at an elevated temperature with a chromium-yielding agent, less than 1 mol. of chromium yielding agent being used per mol. of dyestuff. In the example the mixture of unmetallized dyes is heated with aqueous ammonia and treated with an aqueous chromium salicylate solution containing chromium alum. The dye complex is suitable for dyeing wool and other animal fibres and polyamides.
GB1424462A 1962-04-12 1962-04-12 New chromium complex azo dyestuff Expired GB967011A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1424462A GB967011A (en) 1962-04-12 1962-04-12 New chromium complex azo dyestuff

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1424462A GB967011A (en) 1962-04-12 1962-04-12 New chromium complex azo dyestuff

Publications (1)

Publication Number Publication Date
GB967011A true GB967011A (en) 1964-08-19

Family

ID=10037642

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1424462A Expired GB967011A (en) 1962-04-12 1962-04-12 New chromium complex azo dyestuff

Country Status (1)

Country Link
GB (1) GB967011A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0157733A1 (en) * 1984-03-08 1985-10-09 Ciba-Geigy Ag Method for the preparation of 1:2-chromium complex azo-dyestuffs
US4904767A (en) * 1982-05-14 1990-02-27 Ciba-Geigy Corporation Asymmetric 1:2-chrome complexes of benzene-azo-naphthalene/naphthalene-azo-naphthalene acid dyes for leather
US4997917A (en) * 1984-03-08 1991-03-05 Ciba-Geigy Corporation Preparation of 1:2 chromium complex azo dyes asymmetrically substituted with solubilizing
US5229502A (en) * 1989-02-23 1993-07-20 Ciba-Geigy Corporation Preparation of 1:2 chromium complexes one sulfo substituted and one sulfonamido or the like substituted azo dyes

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4904767A (en) * 1982-05-14 1990-02-27 Ciba-Geigy Corporation Asymmetric 1:2-chrome complexes of benzene-azo-naphthalene/naphthalene-azo-naphthalene acid dyes for leather
EP0157733A1 (en) * 1984-03-08 1985-10-09 Ciba-Geigy Ag Method for the preparation of 1:2-chromium complex azo-dyestuffs
US4933437A (en) * 1984-03-08 1990-06-12 Ciba-Geigy Corporation Preparation of 1:2 chromium complex azo dyes asymmetrically substituted with solubilizing groups
US4997917A (en) * 1984-03-08 1991-03-05 Ciba-Geigy Corporation Preparation of 1:2 chromium complex azo dyes asymmetrically substituted with solubilizing
US5229502A (en) * 1989-02-23 1993-07-20 Ciba-Geigy Corporation Preparation of 1:2 chromium complexes one sulfo substituted and one sulfonamido or the like substituted azo dyes

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