Covestro Deutschland Ag

Bayer Intellectual Property Gmbh

Bayer Materialscience Ag

Stephan Reiter

Jens Krause

Hartmut Nefzger

Sven Meyer-Ahrens

Frank Richter

Stefan Lindner

Dirk Wegener

Norbert Eisen

Matthäus Gossner

Klaus Jurkschat

Markus Schürmann

Gerrit Bradtmöller

Engin Cavlan

Marcel Schornstein

Raul Pires

Hans-Detlef Arntz

Florian Hupka

Harald Rasselnberg

Dirk Brüning

Axel Schmidt

Harald Knaup

Frithjof Hannig

Harald Fietz

Ljuba Iovkova

Norbert Dietrich

Andreas Stumpf

Hans-Peter Huber

Rolf Albach

Bernd Breuer

Dieter Gaumitz

The present invention relates to novel high-value polycarbonate polyols, to processes for the production thereof, to polyisocyanate prepolymers obtainable therefrom and also polyurethane (PUR) and polyurethane urea elastomers which under particularly demanding applications show unique combinations of processing characteristics, hydrolysis and oxidation stability, mechanical and dynamic mechanical properties.

Polycarbonate polyols, polyisocyanate prepolymers and polyurethane and polyurethane urea elastomers based thereon

The present invention relates to a process for producing flame-retarded polyurethane foams, in particular flexible polyurethane foams, using halogen-free flame retardants, wherein the resulting flame-retarded polyurethane foams exhibit low emission values coupled with good mechanical properties. The present invention further relates to halogen-free flame retardants.

Method for producing flame retardant polyurethane foams using halogen-free flame retardants

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

The present invention relates to new catalysts and production thereof as well as the preferred use thereof in the production of polyisocyanate polyaddition products. The described catalysts are tetravalent tin compounds with at least one ligand bonded via at least one oxygen atom or sulfur atom and containing at least one nitrogen atom.

Catalysts and use thereof in the production of polyurethanes

The present invention relates to high-value polyurethane (PUR) and polyurethaneurea elastomers, which can be processed in a particularly simple manner by use of low-viscosity prepolymers based on naphthalene 1,5-diisocyanate, and to a process for production thereof.

High-value polyurethane elastomers and production thereof

The present invention relates to the use of specific inorganic Sn(IV) for the production of polyisocyanate polyaddition products from a) at least one aliphatic, cycloaliphatic, araliphatic and/or aromatic polyisocyanate, b) at least one NCO-reactive compound, c) at least one thermolatent inorganic tin-containing catalyst, d) optionally further catalysts and/or activators other than c), e) optionally fillers, pigments, additives, thickeners, antifoams and/or other auxiliary substances and additives, wherein the ratio of the weight of the tin from component c) and the weight of component a) is less than 3000 ppm when component a) is an aliphatic polyisocyanate and less than 95 ppm when component a) is an aromatic polyisocyanate, wherein as thermolatent catalysts cyclic tin compounds of formula I, II or III:  wherein n&#x3e;1, are used.

Use of tin catalysts for the production of polyurethane coatings

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Langenfeld, Germany

Stephan Reiter