Bayer Aktiengesellschaft

Klaus Prater

Heinrich Heine

Dieter Freitag

Walter Uerdingen

Joachim Franke

Bernhard Hess

Hans-Dieter Jakob

Heinz Keesen

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

The invention relates to a process for the production of sulphonic acid ester group-containing polyhydroxyl compounds having an average hydroxyl functionality of from 1.5 to 4, comprising reacting

Polyhydroxyl compounds containing a sulfonic acid ester group

Combinations of cyclohexyl amides of saturated fatty acids and oligomeric ester amides are eminently suitable for use as thixotropising agents for unsaturated polyester resins.

Thixotropising agents for unsaturated polyester resins

Colorless low-viscosity diglycidyl esters of cycloaliphatic dicarboxylic acids of low molecular weight and with a high epoxide group content are obtained in substantially quantitative yields by reacting the cycloaliphatic dicarboxylic acids with excess epihalohydrin in the presence of 0.5 to 4 % by weight based on the dicarboxylic acid of secondary and/or tertiary O-alkali phosphate as catalyst at 80.degree. to 115.degree.C, followed by dehydrohalogenation of the 3-halogen-2-hydroxy propyl carboxylic acid esters formed with aqueous alkali.

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Krefeld, Germany

Klaus Prater