Water-insoluble monoazo dyestuffs and process for their manufacture

The invention comprises water-insoluble monoazo dyes of formula <FORM:1123108/C4-C5/1> wherein R is the residue of a diazo component, free from acid water-solubilizing groups, of the benzene, diphenyl or naphthalene series or of the heterocyclic series having 5- or 6-membered rings containing...

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Bibliographic Details
Main Authors GRAEWINGER OTTO, BRACHEL HANSWILLI VON, CORNELIUS DIETER
Format Patent
LanguageEnglish
Published 14.08.1968
Subjects
ADHESIVES
CHEMISTRY
DYES
LAKES
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
MORDANTS
NATURAL RESINS
ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES
PAINTS
POLISHES
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Summary:The invention comprises water-insoluble monoazo dyes of formula <FORM:1123108/C4-C5/1> wherein R is the residue of a diazo component, free from acid water-solubilizing groups, of the benzene, diphenyl or naphthalene series or of the heterocyclic series having 5- or 6-membered rings containing nitrogen and/or sulphur atoms, including such rings fused with benzene nuclei and the ring K may be further substituted other than by acid water-solubilizing groups. The dye 1 - (21 - cyano - 41 - nitro - phenylazo)-4-(N - b - cyanoethyl - N - b - phenylethyl - amino)-benzene, described and claimed in Specification 1,068,758 is disclaimed. The dyes are prepared by the usual azo coupling process using N-b -cyanoethyl - N - b - phenylethyl - anilines as coupling components. The dyes may be used to colour cellulose ester, synthetic polyamide, polyacrylonitrile and in particular aromatic polyester fibres in yellow and red to blue shades. Reference has been directed by the Comptroller to Specification 870,677.
Bibliography:Application Number: GB19660047282