Evonik Degussa Gmbh

Evonik Operations Gmbh

Hanna Spohr

Robert Franke

Horst-Werner Zanthoff

Boris Eisenberg

Corinna Hecht

Lena Altmann

Benedikt Dercks

Sebastian Reimann

Holger Pletsch

Dmitriy Shakhvorostov

Emily Clare Schweissinger

Lars Pera

Marius Weiland

The invention relates to random copolymers comprising monomers derived from conjugated dienes and alkyl (meth)acrylates, a method for manufacturing the copolymers, lubricant compositions comprising the copolymers, and the use of the copolymers as additives for lubricant compositions or as a base oil for lubricant compositions. The copolymers are favorably used for driving system lubricating oils, hydraulic oils, engine oils and industrial oil formulations.

Random copolymers for use as base oils or lubricant additives

The invention is concerned with the issue of how to produce n-pentanal by hydroformylation from feedstock mixtures comprising a small proportion of n-butene and a large proportion of n-butane. Specifically, solutions for further optimizing established processes for hydroformylation of such low-butene mixtures in terms of material utilization are sought. The present invention has for its object to enhance the material utilization of the feedstock mixture in the production of n-pentanal from feedstock mixtures having a small proportion of n-butene and a large proportion of n-butane. The process shall be capable of economic operation on an industrial scale. In particular an existing oxo plant shall be honed to achieve better raw material utilization. This object is achieved by a combination of a hydroformylation and a dehydrogenation, wherein said combination has the special feature that the dehydrogenation is arranged after the hydroformylation in the downstream direction and is thus markedly smaller than conventional dehydrogenations provided upstream. A skillful product removal effectively removes contaminants formed in the process.

Production of n-pentanal from low-butene feedstock mixtures

Growing community of inventors

Duisburg-Baerl, Germany

Hanna Spohr