method for the preparation of p - nitro - 0 - halogen benzene azo amp; amp; p cyaanalkylaminobenzeenkleurstoffen and verfpreparaten, one or a number of these monoazokleurstoffen containand the application of this method obtained verfpreparaten formed and method for dyeing and printed ken of fibres.wires or materials produced therefrom wholly or partly synthetic.hydrofobwerkwijze for preparation of p - nitro - 0 - halogen benzene azo amp; amp; p and v cyaanalkylaminobenzeenkleurstoffen