公开(公告)号：GB1118210A

公开(公告)日：1968-06-26

申请号：GB4543965

申请日：1965-10-27

Applicant: BASF AG

Inventor： LEUCHS DIETER ,  KRALMANN REINHOLD

IPC: C09B45/14

Abstract: The dyes of formulae 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:- 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.