Hoechst Aktiengesellschaft

Werner Strassberger

Helmut Korbanka

By oxidation of straight-chained alpha-olefins having 16 to 70 carbon atoms with chromosulfuric acid, the corresponding aliphatic monocarboxylic acids are prepared without noteworthy degradation. The compounds obtained are suitable, inter alia, for making waxy esters or metal soaps which can be worked up into floor polishes or lubricants for plastic materials.

Process for the manufacture of high molecular weight aliphatic

Olefins with vinyl groups are prepared by isomerization of olefins having vinylidene groups in the presence of a silicate having sheet structure, pumice or titanium dioxide as catalyst. The isomerization is carried out at a temperature of from 80 to 350.degree.C and the starting long chain vinylidene olefins have 10 to 70 carbon atoms. The olefins with vinyl groups obtained can be used to manufacture waxy carboxylic acids, sulfonic acids and epoxides.

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Gersthofen, Germany

Werner Strassberger