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Summary:Disclosed is a mass-dyed polymeric material, e.g. polyester, comprising, as dyestuff, a compound or mixture of compounds of formula I I herein the nuclei A, B and D may bear one or more substituents and Me is Ni or Cu. The mass-dyed polymeric material is preferably prepared by incorporating the compounds of formula I in form of a master-batch.
Bibliography:Application Number: KE19860003615