Bayer Aktiengesellschaft

Gunther Weymanns

Erich Meier

Hanns-Ingolf Paul

Rudiger Plaetschke

37 Highly dispersed mixtures of at least two polymers which are not completely miscible in the melt under customary conditions are produced by melting the polymers used in the presence of supercritical gases or mixtures of gases, intensively thoroughly mixing the molten polymers for long enough until the viscosity of the melt has diminished by at least 10%, subsequently cooling the polymer melt with further thorough mixing, until the viscosity of the melt has at least reached the original value again and then depressurizing the polymer melt. The highly dispersed mixtures produced in this way can be processed in the customary manner into mouldings.

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Leverkusen, Germany

Gunther Weymanns