Evonik Operations Gmbh

Evonik Rohmax Additives Gmbh

Roehm Gmbh

Rohmax Additives Gmbh

Michael Neusius

Uwe Boehmke

Clemens Auschra

Klaus Schimossek

Horst Pennewiss

Michael Mueller

Frank-Olaf Maehling

Frank-Olaf Mähling

Torsten Stoehr

Stefan Maier

Nicolai Kolb

Alexander Dardin

Stefan Hilf

Matthias Fischer

Christoph Wincierz

Stephan Massoth

Guenther Graeff

Dieter Janssen

Gabriela Fedor

Thorsten Bartels

Detlef Bloos

Stefan Karl Maier

Qi Xiao

Denise Bingel

Joachim Vetter

Volker Stephan

Miriam-Kathrin Stihulka

Carmen Zamponi

Katrin SCHÖLLER

Low molecular weight polyalkyl acrylate polymers can be used as high viscosity base fluids. A corresponding method can be used for their preparation. Lubricant compositions may contain such low molecular weight polyalkyl acrylate polymers and the compositions may be used as automatic transmission fluids, manual transmission fluids, continuously variable transmission fluids, gear oil formulations, industrial gear oil formulations, axle fluid formulations, dual clutch transmission fluids, dedicated hybrid transmission fluids, or hydraulic oils.

High viscosity polyacrylate base fluids

The invention is related to a composition for use in hydraulic systems of an aircraft. The composition typically comprises an adipic acid-based polyester in a phosphate ester base stock substantially consisting of trialkyl phosphates.

Use of polyesters as viscosity index improvers for aircraft hydraulic fluids

The present invention relates to the use of ester group-including polymers having at least one nonpolar segment P and at least one polar segment D, where the polar segment D includes at least 8 repeating units, and the proportion of dispersing repeating units in the polar segment D is at least 30% by weight based on the weight of the polar segment D, as antifatigue additive in lubricants.

Use of ester group-including polymers as antifatigue additives

The present invention relates to processes for preparing carboxylic acid derivatives, comprising the reaction of at least one carboxylic acid and/or of a carboxylic acid derivative with at least one alcohol and/or an amine in the presence of a metal-containing catalyst, wherein, after the reaction has ended, the metal-containing catalyst is contacted with water and a superabsorbent, the contacting of the catalyst with the water leading to hydrolysis of the catalyst. The present invention further relates to the use of superabsorbents for removing a metal-containing catalyst from a mixture after hydrolysis of the catalyst.

Process for preparing carboxylic acid derivatives

The invention relates to a copolymer consisting of the following monomer components: a) 48-98 wt. % of compounds of formula (I), b) 2-30 wt. % of one or several oxygen-containing methacrylates of formula (II) and c) 0-30 wt. % of a methacrylate of formula (III) of styrol, the quantities a)-c) totalling 100 wt. %. The inventive copolymer is suitable as a an additive for diesel fuels and biodiesel.

Additive for biodiesel and biofuel oils

Demulsifiers

Growing community of inventors

Darmstadt, Germany

Michael Neusius