Degussa Aktiengesellschaft

Roehm Gmbh

Evonik Rohm Gmbh

Peter Kempf

Klaus Schultes

Klaus Albrecht

Helmut Schwind

Ulrich Thiele

Michael Wicker

Dietmar Wandel

Heinz-Dieter Schumann

Klaus Dorn

Norbert Brand

Ursula Golchert

Wolfgang Janas

Alexander Klein

Joachim Cziollek

Stefan Roth

Werner Höss

Holger Moritz

Substantially sulfur free thermoplastic PMMA containing molding compositions are utilized with non-ferrous metal tools for the manufacture of molded articles. The use of such molding materials having a sulfur content of less than 50 ppm reduces the wear on the non-ferrous metal tools, particularly when utilized with injection molding and pressure molding. As a result of the use of sulfur free molding masses where it necessary to utilize tools of non-ferrous metal, there is a substantial economic advantage in the use thereof.

Use of thermoplastic polymethylmethacrylate molding compositions

Process for the production of preoriented filaments from polyester-based polymer mixtures by spinning the polymer mixtures with a draw-off speed v of at least 2500 m/min, a second amorphous, thermoplastically processable copolymer having a glass transition temperature of more than 100.degree. C. being added to the polyester, wherein the ratio of the melt viscosity of the copolymer to the melt viscosity of the polyester is 1:1 to 10:1, in that the amount of copolymer added to the polyester is at least 0.05 wt. %, in that the maximum amount M of the copolymer added to the polyester depends on the draw-off speed v, and in that ##EQU1##

Process for processing polymer mixtures to filaments

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Rodenbach, Germany

Peter Kempf