Bayer Aktiengesellschaft

Karl-Heinz Schabel

Werner Obrecht

Rudiger Musch

Ulrich Eisele

Eberhard Muller

Gerhard Hohmann

Rudolf Casper

Stephen D Pask

Wolfgang Wieder

Ludwig Mott

Christian Ohm

Klaus Siemer

Roland Grober

Dieter Jache

The present invention relates to thermoplastically processible polymer materials with good mechanical properties and high flame resistance.

Flame resistant, halogen-free thermoplastic polymer compositions

Storage-stable polychloroprene is obtained, by aqueous emulsion polymerization, using xanthogen disulphides as molecular weight regulators, when a peptizing agent is added after the end of the polymerization.

Process for the preparation of polychloroprene

Thermoplastic elastomers made of 48 to 88% by weight of ethylene-propylene-diene-rubber (EPDM), 10 to 50% by weight of polypropylene (PP) and 2 to 20% by weight of a third polymer and 5 to 60% by weight of softening oil, based on the total of EPDM, PP and the third polymer, and optionally further conventional constituents, have the advantage that the softening oil does not exude.

Thermoplastic elastomers

In order to control noxious substances in the air, the air to be monitored is continuously drawn through an absorber. An absorber with a suction pump connected downstream is used for this purpose. A particularly small and compact device composed of an absorber and suction pump may be obtained by forming the inlet valve and outlet valve of the suction pump as O-ring disc valves and by providing the pump drive with a light barrier.

Absorber with suction pump

Growing community of inventors

Burscheid, Germany

Karl-Heinz Schabel