Bayer Aktiengesellschaft

Heinz Hammer

Klaus Kircher

Herbert Eichenauer

Rolf-Volker Meyer

Ernst Roos

Eberhard Jurgens

Manfred Blazejak

Karl J Wemmje

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 present invention relates to the use of combinations of specific compounds as blowing agent combinations for thermoplastics containing ester and/or carbonate groups, a process for the foaming of these thermoplastics, and the foams obtained by the process according to the invention.

Process for the foaming of thermoplastics containing ester and/or

Aliphatic polyesters containing sulphur, which contain the sulphur as structural units in the form of sulphide or disulphide groups in both the acid component and the diol component, a process for the preparation of these polyesters, and also polymers containing these polyesters.

Aliphatic polyesters containing sulphur, and their use as stabilizers

The present invention relates to a process for foaming thermoplastic aromatic polycarbonates, 2-phenyl-1-oxa-3,4-diazol-5-ones acylated in the 4-position being used in combination with cyanuric acid.

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Cologne, Germany

Heinz Hammer