Bayer Aktiengesellschaft

Manfred Blazejak

Dieter Freitag

Walter Uerdingen

Rudiger Schubart

Ernst Roos

Heinrich Heine

Bernd Wahle

Heinz Hammer

Wilfried Kohler

Karl J Wemmje

Karl-Johann Wemmje

A new process for the preparation of mono-N-.beta.-cyanoethylanilines, characterized in that a substituted or unsubstituted aniline compound is reacted with acrylonitrile in the presence of active bleaching earth as catalyst at a temperature of between 80.degree. and 200.degree. C. in a nonaqueous reaction medium.

Process for the preparation of mono-N-.beta.-cyanoethylanilines

Oligomeric 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ) is prepared from monomeric TMQ by heating the latter in the presence of a polybasic aliphatic carboxylic acid and in the presence of small amounts of water.

Process for the preparation of oligomeric

The invention relates to epxoy resins obtained by reaction of epichlorohydrin with selected mixtures of phenols for the production of thermosetting and cold-hardening moldings, coating compositions and adhesive compositions.

Special epoxy resins

Chlorothio-N-phthalimide is prepared by reacting N,N'-dithio-bis-phthalimide with chlorine or a chloriating agent at a temperature of 20.degree. to 100.degree. C. The product of the process can be used as an intermediate for preparing vulcanization retarding agents. The product produced can also be utilized to prepare N-[2-formylpropylthio-(2)]-phthalimide by reaction with isobutyraldehyde in the presence of an acid binding agent.

Chlorothio-N-phthalimide and process therefor

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Duesseldorf, Germany

Manfred Blazejak