| 摘要 |
PURPOSE: Provided is a process that avoids disadvantages of the batch process and provides consistent, fluctuationless production of the metal complex intercalates. CONSTITUTION: The continuous process for preparing metal complexes of polyvalent metal ions with mono-, di-, tri-, or tetraanions of an azo compound conforming to the formula 1 or one of its tautomeric structures, comprises the steps of (1) stirring an aqueous dispersion of an alkali metal salt of a compound of formula 1 with the metal salt of the polyvalent metal at a temperature of 10 to 35 deg. C, if appropriate at a pH of 0.5 to 5.5; (2) mixing an aqueous solution, dispersion, or emulsion of the intercalate, if appropriate with comminution of solid particles of the mixture before and/or after the admixing of the intercalate; (3) passing the mixture through a reaction zone at a temperature of 85 to 140 deg.C, while regulating the pH of the mixture entering the reaction zone so that the product dispersion leaving the reaction zone has a pH of 0.5 to 3; (4) subsequently adjusting the pH of the mixture to at least pH 5; and (5) isolating the intercalated metal complex. In the formula 1, R and R' are independently -OH, -NH2, -NH-CN, arylamino, acylamino, or p-chlorophenyl, and R1 and R1' are independently -OH or -NH2.
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