A process for dyeing and/or printing polypropylene with monoazo dyes

The dyes of formulae <FORM:1118210/C4-C5/1> <FORM:1118210/C4-C5/2> <FORM:1118210/C4-C5/3> <FORM:1118210/C4-C5/4> <FORM:1118210/C4-C5/5> <FORM:1118210/C4-C5/6> <FORM:1118210/C4-C5/7> <FORM:1118210/C4-C5/8> <FORM:1118210/C4-C5/9> are prepared by co...

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Bibliographic Details
Main Authors KRALMANN REINHOLD, LEUCHS DIETER
Format Patent
LanguageEnglish
Published 26.06.1968
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 dyes of formulae <FORM:1118210/C4-C5/1> <FORM:1118210/C4-C5/2> <FORM:1118210/C4-C5/3> <FORM:1118210/C4-C5/4> <FORM:1118210/C4-C5/5> <FORM:1118210/C4-C5/6> <FORM:1118210/C4-C5/7> <FORM:1118210/C4-C5/8> <FORM:1118210/C4-C5/9> are prepared by conventional diazotization and coupling processes.ALSO:The invention provides a process in which metal containing polypropylene is dyed with monoazo dyes of general formula:- <FORM:1118210/D1-D2/1> in which R1 is an unsubstituted or substituted alkyl or aryl radical, R2 is an unsubstituted or substituted aryl radical and the ring A may have non-ionic substituent e.g. halogen atoms, or alkyl or alkoxy dialkylamino or acrylamino groups. Metals present in the polypropylene may be zinc, aluminium, chromium, cobalt, iron or nickel, dyeing is advantageously effected at 70-130 DEG C at pH 4-5 conventional thickeners and dispersing agents being used.
Bibliography:Application Number: GB19650045439