Huels Aktiengesellschaft

Huls Aktiengesellschaft

Ioi Oleo Gmbh

Michael Stehr

Jaroslaw Monkiewicz

Horst Pennewiss

Roland Streck

Heinz-Werner Voges

Sebastian Reyer

Hans Guenther Wey

Dirk Lochmann

Hans-Josef Ratajczak

Andreas Zimmer

Frank Kraushaar

Klaus Schulze

Sharareh Salar Behzadi

Dirk Hoppe

Adelbert Otte

Helmut Glaser

A process for the preparation of alkyl sulfate powders, which entails spraying an aqueous solution or dispersion of alkyl sulfates into a head part of a spraying tower through single-component nozzles under pressure sufficient to form a spray mist, and drying the resulting spray mist in co-current manner using an inert gas at a temperature sufficient to afford a powder having a bulk density of at least 300 g/l.

Process for the preparation of alkyl sulfate powder having a high bulk

The invention relates to the use of polymethylalkanes having terminal methyl groups and methylene and ethylidene groups of the formula I ##STR1## in which the total number of C atoms n+2 m+2 is 20 to 100 and the ratio of the methyl and methylene groups to the ethylidene groups is 3 to 20:1 and the ethylidene groups are always separated by at least one methylene group, as biodegradable base oils for lubricants and functional fluids. Suitable polymethylalkanes are obtained by oligomerization of .alpha.,.omega.-diolefins, for example in particular according to P 41 19 332.6, or by pyrolysis of ethene/propane copolymers and subsequent hydrogenation in each case. The polymethylalkanes can be combined with conventional additives and other degradable or non-degradable base oils.

Use of polymethylalkanes as biodegradable base oils in lubricants and

New polyethers based on tetrahydrofuran, with good lubricant properties. The invention concerns polyethers produced by copolymerizing tetrahydrofuran and glycidyl ether in the presence of alkanols. The new polyethers are useful as lubricants.

Polyethers, their production and use

Growing community of inventors

Gelsenkirchen, Germany

Michael Stehr