| abstract |
Continuous production of metal complex intercalates (I) of (a) cited polyvalent metal ions with (b) mono-, di-, tri- or tetraanions of azobarbituric acid compounds (II), intercalated with different compound(s) (III). Continuous production of metal complex intercalates (I) of (a) polyvalent calcium, zinc, copper, iron, manganese, nickel, cobalt, strontium, barium, chromium, tin, aluminum, magnesium, cadmium, lead and lanthanum metal ions , with (b) mono-, di-, tri- or tetraanions of azobarbituric acid compounds of formula (II) or a tautomer, intercalated with different compound(s) (III), comprises: (i) stirring an especially aqueous dispersion of the alkali salt of (II) with a salt of the metal at 10-35, especially 20-25 degrees C and optionally at pH 0.5-5.5; (ii) adding an aqueous solution, dispersion or emulsion of the intercalate and, if necessary, crushing the solid particles of the mixture before and/or after adding the intercalate; (iii) passing the mixture through a reaction zone at 85-140, preferably 110-120 degrees C under pressure, especially of 1 x 10<5> to 4 x 10<5> Pa; (iv) regulating the pH of the mixture in the reaction zone so that the product dispersion has pH 0.5-3; and (v) adjusting the pH to at least 5 and isolating (I). R, R' = hydroxyl (OH), amino (-NH2), cyanamino (-NH-CN), arylamino, acylamino or p-chlorophenyl; and R<1>, R<1>' = OH or NH2. An Independent claim is also included for pigment formulations containing intercalate(s) (I) as pigment and also dispersant(s). |