PROCESS FOR THE PREPARATION OF INSOLUBLE METAL COMPLEX DYES

    公开(公告)号:DE3063746D1

    公开(公告)日:1983-07-21

    申请号:DE3063746

    申请日:1980-04-23

    Applicant: BASF AG

    Inventor: RADTKE VOLKER DR

    Abstract: A process for the preparation of insoluble metal complex colorants of the formula (I) where R, R1, R2 and R3 may be identical or different and each is hydrogen, C1-C4-alkyl, C1-C4-alkoxy, chlorine, bromine, trifluoromethyl or phenyl, Me is copper, cobalt or preferably nickel, Z is NH, O or S and A is one equivalent of an anion, by condensing the corresponding 1,3-diiminoisoindoline and thiazolidine derivative in the molar ratio of 1:1 in water, isolating the 1:1 condensation product, reacting the latter with a metal salt MeA2 in an aprotic polar water-miscible solvent and isolating the reaction product. The water-containing press cake of the 1:1 condensation product can be used for the reaction with the metal salt MeA2, in which case the water, together with a part of the solvent, is distilled off during the reaction in which (I) is formed. The process has great economic advantages over the prior art processes.

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