Evonik Rohmax Additives Gmbh

Evonik Oil Additives Gmbh

Evonik Operations Gmbh

Dieter Janssen

Michael Mueller

Boris Eisenberg

Torsten Stoehr

Markus Scherer

Klaus Schimossek

Fabian Ziegler

Michael Neusius

Stefan Hilf

Christoph Wincierz

Miriam Kathrin Stihulka

Holger Becker

Thorsten Bartels

Melanie Croessmann

Ellen Suchert

Lucas Voigt

Miriam-Kathrin Stihulka

Michael Müller

Jean-Luc Herbeaux

Juergen Schnabel

Katja Nothdurft

Rebecca Klein

Hans Goerlitzer

Rebecca Jüstel

Sebastian Seibel

Torsten Stöhr

Rebecca Justel

Stefan Karl Maier

Hans Görlitzer

Jürgen Schnabel

The present invention relates to the use of comb polymers comprising, in the main chain, repeat units which are derived from polyolefin-based macromonomers, and repeat units which are derived from low molecular weight monomers selected from the group consisting of styrene monomers having 8 to 17 carbon atoms, alkyl (meth)acrylates having 1 to 10 carbon atoms in the alcohol group, vinyl esters having 1 to 11 carbon atoms in the acyl group, vinyl ethers having 1 to 10 carbon atoms in the alcohol group, (di)alkyl fumarates having 1 to 10 carbon atoms in the alcohol group, (di)alkyl maleates having 1 to 10 carbon atoms in the alcohol group and mixtures of these monomers, where the molar degree of branching is in the range of 0.1 to 10 mol % and the comb polymer comprises a total of at least 80% by weight, based on the weight of the repeat units, of repeat units which are derived from polyolefin-based macromonomers and repeat units which are derived from low molecular weight monomers selected from the group consisting of styrene monomers having 8 to 17 carbon atoms, alkyl (meth)acrylates having 1 to 10 carbon atoms in the alcohol group, vinyl esters having 1 to 11 carbon atoms in the acyl group, vinyl ethers having 1 to 10 carbon atoms in the alcohol group, (di)alkyl fumarates having 1 to 10 carbon atoms in the alcohol group, (di)alkyl maleates having 1 to 10 carbon atoms in the alcohol group and mixtures of these monomers, for reducing the fuel consumption of vehicles.

Use of comb polymers for reducing fuel consumption

The invention relates to a polyalkyl (meth) acrylate for improving lubricating oil properties, which comprises repetition units which are derived from (meth) acrylates having 6 to 22 carbon atoms in the alcohol residues, and repetition units which are derived from amine derivatives of an ethylenically unsaturated monomer. The invention further relates to methods for producing and using the present polyalkyl (meth) acrylate.

Polyalkyl(meth)acrylate for improving lubricating oil properties

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 invention relates to copolymers which are suitable for producing additives for solvent deparaffination of paraffin-containing mineral oil distillates and which consist of radically polymerized monomers of formulas A and B, wherein the radicals have the meaning cited in the description. The invention also relates to the use of said copolymers for the production of dewaxing additives.

Copolymers as dewaxing additives

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Gross-Umstadt, Germany

Dieter Janssen