Bayer Aktiengesellschaft

Lutz Schrader

Werner Waldenrath

Dieter Freitag

Claus H Wulff

Uwe Westeppe

Hanns-Peter Muller

Gunther Weymans

Carl Casser

Karl-Herbert Fritsch

Hans-Dieter Jakob

Dieter Arlt

Richard Kopp

Walter Uerdingen

Wilfried Zecher

Joachim Wank

Joachim Franke

Siegfried Thurm

Christian Leuschke

Dietrich Rathmann

Reimer Holm

Johann Niggemann

Free-flowing compression molding compositions made up of from about 40 to about 80 wt. % of organic filler, from about 20 to about 60 wt. % of an organic reactive resin, and optionally further auxiliary substances and additives. The reactive resin contains an epoxide which may be liquid, a latent catalyst and a powdered polyisocyanate which is solid at room temperature.

Free-flowing compression molding compositions and processes for their

The present invention relates to heat-curable reaction resin mixtures comprising at least one organic polyisocyanate, at least one organic compounds having epoxy rings, and mixtures of certain tertiary amines as reaction accelerators. These reaction resin mixtures are suitable as casting resins for mold making and for the production of various kinds of composites. The curing of the resins takes place in economically reasonable time periods, without excessive evolution of heat, while avoiding shrinkage and the formation of cracks and bubbles.

Heat-curable reaction resin mixtures and the use thereof

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

Dihydroxydiphenyl cycloalkanes corresponding to the formula ##STR1## in which R.sup.1 and R.sup.2 independently of one another represent hydrogen, halogen, C.sub.1 -C.sub.8 alkyl, C.sub.5 -C.sub.6 cycloalkyl, C.sub.6 -C.sub.10 aryl and C.sub.7 -C.sub.12 aralkyl,

Polycarbonate from dihydroxydiphenyl cycloalkane

Polycarbonate from dihydroxy diphenyl cycloalkane

A 0.3 to 2 mm thick multilayer composite material comprising the following layers:

Multilayer composite material

This invention relates to a process for coating moulded plastic articles of thermoplastic polycarbonates or thermoplastic polyarylene sulphides with metal oxides, to the moulded plastic articles obtainable by the process according to the invention and to their technological application for outdoor use, for example for the production of coverings or facings in the building industry.

Process for the production of plastic moulded articles with improved

Dihydroxydiphenyl cycloalkanes, their production and their use for the

This invention relates to the use of new special polyimides for the production of cast films and coatings.

Use of special polyimides as cast films and coatings

Growing community of inventors

Krefeld, Germany

Lutz Schrader