Bayer Aktiengesellschaft

Wolfgang Grimm

Wilhelm Goyert

Hans Wagner

Bernd Quiring

Alfred Eitel

Georg Niederdellmann

Hans-Dieter Ruprecht

Ernst Meisert

Albert Awater

Wilhelm Schreiner

Karl-Heinz Ott

Peter Haas

Hans-Georg Hoppe

Norbert Eisen

Wolfgang Oberkirch

James M Barnes

Heinz Muller

Klaus Recker

Stephan Schleiermacher

Klaus Brecht

Heinz Hausmann

Bruno Kruger

Paul T Henrichs

Udo Post

Ernst-Christoph Prolingheuer

Jurgen Giesselmann

Elke Von Seggern

Marc Sch&uuml;tze

Hans Mandel

Denis Bouvier

The invention provides polyurethane elastomers (PU elastomers), a process for their production using special catalyst mixtures and their use in particular for the manufacture of shoe soles.

Polyurethane elastomers, process for their production and use thereof

Pressure resistant and heat-stable insulating coatings for hollow bodies, and a method for producing the same

For the production of sandwich structure elements comprising non-cellular polyurethane layers and polyurethane foamed layers which are produced on a substrate by the application of layers to a substrate, it is proposed that at least the non-cellular polyurethane layers contain 15 to 55% by weight of mica. Sandwich structure elements are obtained which are particularly dimensionally accurate and which adhere well. The effect is believed to be based on a non-homogeneous curing reaction of the mixture which reacts to form polyurethane, due to the presence of mica.

Polyurethane sandwich structure element and process for production

A device is described for externally coating bodies of revolution which comprises means for mounting and rotatably driving the body to be coated, at least one coating compound application nozzle which is stationary relative to the rotational movement of the body, and drive means for the relative movement of the nozzle and body of revolution in the axial direction of the body. The nozzle is secured on the horizontal leg of an elbow disposed transversely to the nozzle axis, wherein the elbow is guided towards a restoring device in a horizontally displaceable manner by means of a vertically movable horizontal support arm. In operation the horizontal leg and support arm rest on the body of revolution and the other leg of the elbow laterally abutting the body.

Device for coating rotating bodies

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

Rotational molding process for insulating pipes

The present invention is directed to a process for the continuous production of elongate hollow bodies or inner linings for such hollow bodies, from a liquid material wherein the peripheral surface of a mandrel rotating about a horizontal or slightly inclined shaft is covered with a separating film and the liquid material is applied to said separating film and the resulting hollow body is continuously drawn from the mandrel in the axial direction of the shaft while observing the solidification speed of the material, the improvement wherein the separating film is applied to the mandrel in the axial direction of the shaft and to an apparatus for the use therein.

Process for the continuous production of elongate hollow bodies or inner

The present invention is directed to a process for the continuous production of articles or coatings with contours wherein a liquid material is introduced at one end into the mold cavity formed between at least two travelling continous shaping faces, said material being cured in the mold cavity and subsequently removed from the mold, characterized in that (i) the travelling faces are moved downwards at least in the region of the material feed, (ii) the stream of material supplied is moved to and fro transversely to the direction of advance of the faces, and (iii) the quantity of material supplied is controlled so as to fill the mold cavity with a uniform coating and an apparatus for use therein.

Process for the continuous production of articles or coatings with

The present invention is directed to an apparatus for the continuous production of elongate hollow bodies or inner linings for such hollow bodies, from a liquid material wherein the peripheral surface of a mandrel rotating about a horizontal or slightly inclined shaft is covered with a separating film and the liquid material is applied to said separating film and the resulting hollow body is continuously from the mandrel in the axial direction of the shaft while observing the solidification speed of the material, the improvement wherein the separating film is applied to the mandrel in the axial direction of the shaft.

Apparatus for the continuous production of elongate hollow bodies

The instant invention is directed to thermoplastic chemical material comprising:

Reinforced polyurethane thermoplastic chemical materials and processes

This invention relates to an improved method of producing impermeable cellular polyurethane elastomers from polyisocyanates, relatively high molecular weight polyhydroxyl compounds and water as chain lengthening and blowing agent to which additional chain lengthening agents may be added and it is characterized by the use of certain silicone derivatives. The new method makes it possible for impermeable cellular molded articles to be produced without the necessity of forming a skin on the surface, of the kind known, for example, in integral skin foams.

Impermeable molded articles of cellular polyurethane elastomers produced

The instant invention is directed to a continuous process for the production of thermoplastic materials, comprising:

Process for the production of thermoplastic synthetic materials

The instant invention is directed to a thermoplastic synthetic material, comprising:

Thermoplastic synthetic material and a process for its production

The instant invention is directed to a process for the modification of a thermoplastic polymer comprising:

Growing community of inventors

Leverkusen, Germany

Wolfgang Grimm