Huels Aktiengesellschaft

Chemische Werke Huls Aktiengesellschaft

Chemische Werke Huels Aktiengesellschaft

Ekkehard Wienhoefer

Kurt Kosswig

Hans-Josef Ratajczak

Harald Lueders

A polyalcohol mixture is produced by heating dehydrating a reaction mixture comprising D-sorbitol, L-sorbitol or a mixture thereof in the presence of an acid catalyst. The reaction progress is followed by measuring the optical rotation of the reaction mixture during the reaction. The reaction is stopped when the optical rotation value of the reaction mixture corresponds to the optical rotation value of the desired polyalcohol mixture.

Preparation of specifically adjusted polyalcohol mixtures based on

A compound of the formula ##STR1## wherein R is alkyl of 8-22 carbon atoms in the alkyl chain or hydroxyalkyl of 2-22 carbon atoms; and R' and R' each independently is hydrogen or C.sub.1 -C.sub.20 -alkyl provided that R' and R' are not simultaneously hydrogen, and R' and R' in total have 8-20 carbon atoms; and

Adducts of alcohols and olefin oxides as biodegradable and low-foaming

Compounds of the following formula are suitable for reducing the interfacial surface tension of oily phases with respect to water: ##STR1## wherein z is 1 or 2,

Growing community of inventors

Marl, Germany

Ekkehard Wienhoefer