| 摘要 |
The invention relates to a process for preparing metal complexes of polyvalent metal ions with azo compounds of formula (I) or tautomeric structures, in which R and R' are -OH, -NH2, -NH-CN, aryl-amino, acylamino, or p-chlorophenyl, and R1 and R1' are independently -OH or -NH2, that intercalate an intercalate by (1) stirring an aqueous dispersion of an alkali metal salt of the azo compound with the polyvalent metal salt at 10 to 35° C., (2) admixing an aqueous solution, dispersion, or emulsion of the intercalate, (3) passing the mixture through a reaction zone at 85 to 140° C., while regulating the pH so that the product dispersion leaving the reaction zone has a pH of 0.5 to 3, (4) adjusting the pH of the mixture to at least pH 5, and (5) isolating the intercalated metal complex.
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