Bayer Aktiengesellschaft

Bayer Corporation

Joachim Franke

Hanns-Peter Muller

Kurt P Meurer

Hans-Dieter Jakob

Christian Lindner

Hanns P Muller

Peter Haas

Josef Witte

Helmut Fiege

Burkhard Kohler

Karlfried Wedemeyer

Harald Pielartzik

Walter Uerdingen

Stephan Kirchmeyer

Artur Botta

Heinrich Heine

Alexander Karbach

Wilhelm Goyert

Bernhard Hess

Robert J Kumpf

Wolfgang Wehnert

Lothar Meier

Lutz Schrader

Wolfram Kissener

Horst Gruttmann

Clifford J Lau

Klaus Prater

Jeffrey S Wiggins

Helmut Kipphardt

Maria Gartner

Renate Bulan

Hans-Dieter Jacob

A compatibilized thermoplastic molding composition containing polyurethane and polyolefin resins is disclosed. Accordingly, a particularly structured copolymer having a number average molecular weight of about 25,000 to 350,000 and containing blocks of monoalkylene arene and either hydrogenated conjugated diene or non-hydrogenated conjugated diene, was found to compatibilize the composition. Articles molded from the composition are characterized by their good mechanical properties.

Compatibilized thermoplastic molding composition

A substantially linear poly-vinylarene/polyurethane block copolymer prepared by reacting (1) a difunctional poly-vinylarene which is produced by anionic polymerization and which contains isocyanate-reactive groups, (2) a diisocyanate or an isocyanate prepolymer, and (3) a diol having a high molecular weight or a chain extender having a lower molecular weight, is disclosed to be suitable for the preparation of shaped articles, coatings, coupling agents and compatibilizers.

Thermoplastically processible poly-vinylarene/polyurethane block

The present invention directed to an at least substantially pore-free polyurethane prepared by reacting at least one polyisocyanate and a component containing a partial carboxylic acid ester which is the reaction product of a carboxylic acid and an at least trihydric alcohol in quantities such that at least one of the hydroxyl groups of said alcohol is not esterified.

At least substantially pore-free polyurethane molding compounds

This invention relates to a process for the preparation of foundry cores and molds by mixing a filler and a casting resin mixture and then curing the resultant mixture. The casting resin mixture is made from (a) 25 to 99.9% of at least one organic polyisocyanate, (b) 0.1 to 50% of at least one organic compound containing at least two epoxide groups, and (c) up to 50% of a polyhydroxyl compound, the quantities being based on the total quantity of resin.

Process for the preparation of foundry cores and molds

This invention relates to thermosetting compositions for the production of epoxide networks of very high impact strength, to a process for their preparation and to their use as polymer materials, coating compounds, adhesives and materials for electrical insulation.

Thermosetting compositions for the production of liquid-crystalline

It is now possible to provide reaction resin mixtures based on organic polyisocyanates and organic polyepoxides that can be hot-cured to high-quality plastics having isocyanurate and oxazolidinone groups that are largely storage-stable at room temperature, without their curing having to be stopped at any time, so that the systems exist in an intermediate 'B-stage' (i.e., in a state that is solid at ambient or moderately elevated temperature but still fusible), so that at any later time, for example after pulverizing or dissolving in a suitable solvent, they can be converted by shaping and further thermal action to their ultimate, crosslinked and no longer fusible final state.

Thermosetting reaction mixtures, process for their production and the

Reactive systems comprising of a specific polyisocyanate component and a reactive component for this polyisocyanate component, as well as non-reactive plasticizers and if appropriate other auxiliaries and additives, and a process for the preparation of polyurethane plastics containing isocyanurate groups using this reactive system.

Reactive systems and a process for the preparation of polyurethane

The present invention is directed to poly-.alpha.-olefin/polyurethane block copolymers which are prepared by reacting

Poly-.alpha.-olefin/polyurethane block copolymers, processes for their

Reactive systems consisting of organic polyisocyanates, organic polyepoxides, polymer modifiers, special catalysts and optionally other auxiliary agents and additives.

Reactive systems and a process for the preparation of modified duroplasts

The invention relates to blends of polyarylene sulfides, epoxides, anhydrides, glass fibers and optionally other fillers. The blends are distinguished by good mechanical properties.

Blends of polyarylene sulfides, epoxides, anhydrides, glass fibers and

The present invention relates to a reaction resin composition comprising a mixture of polyisocyanates, epoxides, and amine catalysts of the formula ##STR1## wherein A is independently alkylene, alkenylene, alkynylene, alkylidene, cycloalkylene, or aralkenylene; m is an integer of from 0 to 30; R.sup.1, R.sup.2 and R.sup.3 are independently optionally substituted aralkyl or polyaralkyl; and R.sup.4 is alkyl, alkenyl, alkynyl, cycloalkyl, or optionally substituted aralkyl or polyaryalkyl.

Cold setting reaction resin mixture and use thereof

The present invention is directed to aqueous solutions or dispersions of cationically modified polyurethanes, characterized in that the dissolved or dispersed polyurethanes

Aqueous solutions or dispersions of polyurethanes, a process for their

This invention relates to thermoplastic moulding compositions of PVC and poly-.alpha.-olefine/polyurethane block copolymers and poly-(C.sub.2 -C.sub.10 -.alpha.-olefines) which have been functionalized in relation to isocyanate groups, preferably polypropylene, di- or higher poly-isocyanates or isocyanate prepolymers and optionally relatively high molecular weight polyols and/or low molecular weight chain lengthening agents.

Thermoplastic moulding compositions based on polyvinyl chloride and a

The present invention is directed to polyethers obtained by the reaction of a substituted 1,2-epoxy-alkane bearing at least one alkyl substituent containing at least 8 carbon atoms with at least one polyol corresponding to the formula

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Cologne, Germany

Joachim Franke