GB740272A - New chromiferous monoazo dyestuffs - Google Patents

New chromiferous monoazo dyestuffs

Info

Publication number
GB740272A
GB740272A GB1209853A GB1209853A GB740272A GB 740272 A GB740272 A GB 740272A GB 1209853 A GB1209853 A GB 1209853A GB 1209853 A GB1209853 A GB 1209853A GB 740272 A GB740272 A GB 740272A
Authority
GB
United Kingdom
Prior art keywords
chromium
atoms
specified
amino
dyestuffs
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
GB1209853A
Inventor
Arthur Howard Knight
Charles Hugh Reece
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB1209853A priority Critical patent/GB740272A/en
Publication of GB740272A publication Critical patent/GB740272A/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
    • C09B45/00Complex metal compounds of azo dyes
    • C09B45/02Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
    • C09B45/14Monoazo compounds
    • C09B45/16Monoazo compounds containing chromium

Landscapes

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

Abstract

The invention comprises chromium complexes of compounds of formula: <FORM:0740272/IV(c)/1> where R is an alkyl group of 2-4 C atoms and X is an alkyl group of 1-4 C atoms, which contain 0.5-0.7, preferably 0.5, atoms of chromium per molecule of azo compound. The chromiferous dyestuffs may be made by treating the azo compound under weakly acid, neutral or alkaline conditions with the appropriate quantity of chromiumyielding agents. Preferably 0.5-0.6 atomic proportions of chromium-yielding agent are used per molecular proportion of azo compound. The azo compounds may be made by coupling a diazotized 2-amino-phenol carrying an SO2R group in the 4 position with an appropriate 1-carboalkoxyamino-7-naphthol. Specified diazo components are 2-amino - phenol-4-ethyl-,-isopropyl-,-propyl- and n-butyl-sulphone. Specified coupling components are 1-carbo-methoxy-ethoxy-, -n-butyloxy-and-isopropyloxy-amino-7-naphthol. Specified chromium-yielding agents are chromium sesquioxide, fluoride, chloride, formate and acetate, mixtures of chromium salts with alkali metal or ammonium salts of aliphatic hydroxy carboxylic acids, e.g., tartaric acid and ammonium - oxalato - aminochromate. The chroming reaction may be effected at elevated temperatures in aqueous media preferably in the presence of an organic solvent such as ethanol, n-butanol, ethylene glycol, b - ethoxyethanol, cyclohexanol, dimethylformamide, mono- and di-ethanolamine and pyridine. Chroming may also be effected with an alkali metal chromite and glycerol in an alkaline aqueous medium. Wetting or dispersing agents may be present. The dyestuffs dye wool and silk and synthetic proteins from neutral or weakly acid dyebaths. They dye wool in grey tints. They may be used for colouring lacquers, varnishes and plastic materials. Examples are provided of the preparation of dyestuffs using certain of the above specified components. Specification 667,168 is referred to. In the Provisional Specification the group -NH COOX is replaced by -NH COX where X is an alkyl group of 1-3 C atoms or an alkoxy group of 1-4 C atoms and 1-acetyl- and -propionyl-amino-7-naphthol are specified coupling components the former being coupled in Examples with 2-aminophenyl-4-ethyl- and -isopropyl-sulphone prior to chroming.
GB1209853A 1953-05-01 1953-05-01 New chromiferous monoazo dyestuffs Expired GB740272A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1209853A GB740272A (en) 1953-05-01 1953-05-01 New chromiferous monoazo dyestuffs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1209853A GB740272A (en) 1953-05-01 1953-05-01 New chromiferous monoazo dyestuffs

Publications (1)

Publication Number Publication Date
GB740272A true GB740272A (en) 1955-11-09

Family

ID=9998354

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1209853A Expired GB740272A (en) 1953-05-01 1953-05-01 New chromiferous monoazo dyestuffs

Country Status (1)

Country Link
GB (1) GB740272A (en)

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