Method for Producing Transparent Dioxazine Pigments
OwnerHeino Heckmann, Martin Boehmer +1inventors
InventorsHeino Heckmann, Martin Boehmer, Klaus Brychcy
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Abstract
The invention relates to a method for producing transparent dioxazine pigments. Said method is characterised by the use of an eccentric oscillating mill to crush a dioxazine crude pigment, said mill comprising at least one milling container that is mounted on the oscillating elements and an excitation unit that is rigidly fixed to said milling container. According to the invention, the excitation takes place in an eccentric manner on one side, outside the gravitational axis and the centre of mass of the milling container, thus generating inhomogeneous oscillations consisting of circular, elliptical and linear oscillations.
Claims8
1) A method for producing a transparent dioxazine pigment comprising the steps of comminuting a crude dioxazine pigment using an eccentric vibration mill having at least one milling container mounted on vibratory elements and having an energizer unit fastened rigidly to the at least one milling container, wherein the comminuting step includes energizing the crude dioxazine pigment, wherein the energizing taking place eccentrically to one side and outside the gravitational axis and the center of gravity of the at least one milling container, so that inhomogeneous vibrations consisting of circular, elliptical, and linear vibrations are generated.
Dependencies are inferred from the claim text.