Bayer Aktiengesellschaft

Agfa-gevaert Ag

Ulrich Biskup

Dieter Freitag

Ludwig Bottenbruch

Joachim Probst

Hans-Rudolf Dicke

Claus Kobusch

Manfred Schmidt

Volker Eckhardt

Christoph Irle

Aziz El-Sayed

Heinrich Jung

The invention relates to aqueous two-component polyurethane systems, a process for their production, and their use for the production of coatings having increased impact strength, high stability properties and outstanding optical properties.

Aqueous two-component polyurethane systems with increased impact resistance, high stability and good optical properties, method for producing same and their use

This invention relates to aqueous two-component polyurethane systems, to a process for producing them, and to their use for the production of coatings having an enhanced impact strength and good resistance to solvents.

Aqueous two-component polyurethane systems with increased impact resistance and good stability properties, method for producing same and their use

Thermotropic aromatic polyesters which contain condensed radicals of bis-.alpha., .omega.-(4-hydroxyphenyl)-n-alkanes, have high dimensional stability under heat and at the same time high thermal stability. They can be processed thermoplastically at temperatures below 370.degree. C.

Thermotropic aromatic polyester with high thermal stability

Thermotropic fully aromatic polyesters which contain radicals of p-hydroxybenzoic acid, iso- and/or terephthalic acid and 2,7-dihydroxynaphthalene condensed therein, having outstanding mechanical properties and accordingly are very easy to process.

Thermotropic aromatic polyesters having a high tenacity and an improved

In a process for the chain-lengthening of gelatine the gelatine is brought into contact with a hardening agent which can activate the carboxyl groups of the gelatine. The result is a partially hardened gelatine which has advantageous properties as for the production of photographic layers.

Growing community of inventors

Cologne, Germany

Ulrich Biskup