Bayer Aktiengesellschaft

Willi Meister

Herbert Heidingsfeld

Friedemann Muller

Wolfgang Brauer

Jurgen Winkler

Hans-Georg Hoppe

Hans-Georg Wussow

Bernhard Schulte

Rolf Dhein

Karlheinz Hildenbrand

Karl-Heinz Wolf

Dittmar Nerger

A process for the continuous production of a thermoplastic molding composition containing a mixture of a TPU and a thermoplastic (co)polymer is disclosed. The process comprises

Process for preparing TPU molding compositions

A thermoplastic molding composition comprising a thermoplastic polyurethane and a wax mixture is disclosed. The polyurethane is a product of an organic diisocyanate, a linear, hydroxyl-terminated polyol and a diol or diamine chain extender. The wax mixture contains a first mixture of an ester of a C.sub.10-45 aliphatic carboxylic acid and a diol, and an alkali metal or alkaline earth metal salt of a C.sub.10-45 aliphatic carboxylic acids, and at least one member selected from the group consisting of fatty acid ester, fatty acid amide, fatty acid ester amide and polyethylene wax.

Melt-processable polyurethanes containing special wax mixtures

Thermoplastically processable polyurethane elastomers are produced by a process of

Multistage process for production of thermoplastic polyurethane

A process for the continuous production of a thermoplastic molding composition containing a mixture of TPU and a (co)polymer is disclosed. The process comprises

Thermoplastically processable polyurethane elastomers are prepared by A) mixing one or more substantially linear polyols with a diisocyanate, B) reacting the resultant mixture substantially completely in a reactor at temperatures of &gt;100.degree. C. to form a prepolymer, C) mixing the prepolymer with low molecular weight chain extenders, D) applying the reaction mixture prepared in stage C) to a support and allowing the mixture to react thereon to solidification.

Multistage process for producing thermoplastic polyurethane elastomers

The present invention relates to a process for the preparation of plastics containing thermoplastic polyurethanes and optionally other components comprising (a) melting and homogenizing a thermoplastic polyurethane in an extruder, and (b) adding an isocyanate to said extruder containing the melted and homogenized thermoplastic polyurethane.

Process for the preparation of plastics containing thermoplastic

Composite membranes of a macroporous filler-containing membrane of at least two incompatible polymers and a pore-free polyurethane membrane applied there to exhibit an improved action in the removal of benzenes optionally suhstituted by lower alkyl radicals, hydroxyl, chlorine or bromine from their mixtures with aliphatic and/or cycloaliphatic hydrocarbons, alcohols, ethers, ketones and/or carboxylic acid esters or from effluent.

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Dormagen, Germany

Willi Meister