Bayer Aktiengesellschaft

Bayer Intellectual Property Gmbh

Covestro Deutschland Ag

Covestro Intellectual Property Gmbh & Co. Kg

Kraussmaffei Technologies Gmbh

Dirk Brüning

Dirk Wegener

Marcel Schornstein

Wolfgang Grimm

Hans-Detlef Arntz

Harald Rasselnberg

Heinz Muller

Klaus Recker

Hans-Dieter Ruprecht

Stephan Reiter

Hubert Ehbing

Rainer Protte

Udo Maier

Benedikt Kilian

The invention relates to foams of high thermal stability, to the production thereof from organic polyisocyanates and polyepoxides, and to the use of the foams.

Foams of high thermal stability

Conditioning device () and method for drying and/or controlling the temperature of a ballast bed () of a railway track system (), wherein the railway track system () has sleepers () resting on the ballast bed () and rails () resting on the sleepers, wherein the conditioning device has a bogie () for moving the conditioning device (). An outlet nozzle () for blowing temperature-controlled air into the ballast bed () via at least one blowing-in region () positioned between two adjacent sleepers () is connected to the bogie (), as is at least one cover plate () for essentially air-tight coverage of an upper side, pointing essentially in the direction counter to the direction of gravity, of a side strip (), provided next to the sleepers () in the direction of travel, of the ballast bed (). In a method for drying and controlling the temperature of a ballast bed () of a railway track system (), an upper side of the ballast bed () and/or at least one sleeper () and at least one rail () are sealed in an essentially air-tight fashion outside a blowing-in region () before temperature-controlled air is blown into the ballast bed () via the blowing-in region ().

Conditioning device and method for drying and controlling the temperature of a ballast bed

The coating of bodies rotating about an axis with a reaction mixture forming a polyurethane can be improved by making use of a sheet die disposed parallel to the axis of rotation of the body at an angle .alpha., whereby the rate of reaction of the reaction mixture and the relative movement are synchronized with the circumferential speed of the rotating body in such a way that the successive convolutions overlap in the form of scales and connect together seamlessly.

Method and device for coating a body rotating about an axis

Growing community of inventors

Leverkusen, Germany

Dirk Brüning