Huels Aktiengesellschaft

Fritz Berke

Helmut Kehr

Manfred Scheiba

Adolf Kuhnle

Guenter Hahn

Werner Schaefer

Volker Schrenk

The preparation of pigment concentrates for the coloring of resin molding compositions in which the pigment is very finely dispersed is carried out successfully using, for the preparation of the pigment concentrates, a dispersant which contains the following components:

Dispersants for pigment concentrates

An ester of an acidic oxidized polyethylene wax and, for example, a polyhydric alcohol of a chain length of 2-5 carbon atoms, wherein the acid number of the oxidized polyethylene wax is, prior to esterification, 10-35 and the acid number of the wax ester is 8 or less, is useful as a lubricant for plastics processing, especially for rolling and calendering unplasticized PVC into sheeting.

Lubricant for processing of plastics

Growing community of inventors

Herne, Germany

Fritz Berke