Evonik Operations Gmbh

Fabian Ziegler

Katrin Schöller

Stefan Hilf

Klaus Schimossek

Stefan Maier

Peter Altenbuchner

Christiane Zatocil

Jens Elsner

Boris Eisenberg

Wolfgang Tschepat

Sarah Lippert

Dieter Janssen

Sebastian Bestgen

Dmitriy Shakhvorostov

Emily Clare SCHWEIßINGER

Katrin Schoeller

Stefan Karl Maier

Jennifer Holtzinger

Emily Clare Schweissinger

Katja Nothdurft

Frank Lauterwasser

Emily Clare Schweiβinger

Dieter Janßen

Katrin SCHÖLLER

Mara Doerfel

A polyester is useful as a high viscosity base fluid. A method for its preparation involves isomerizing an alpha-olefin, epoxidizing an internal olefin, reacting an internal epoxide, and isolating the polyester. Lubricant compositions can contain such polyesters and the compositions are useful 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 as hydraulic oils.

High viscosity base fluids based on oil compatible polyesters

A polyester is useful as a high viscosity base fluid. A method for its preparation involves epoxidizing an alpha-olefin, reacting the alpha-epoxide or diol with a saturated linear aliphatic dicarboxylic acid, and isolating the polyester. Lubricant compositions can contain such polyesters and the compositions are useful 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 as hydraulic oils.

High viscosity base fluids based on oil compatible polyesters prepared from long-chain epoxides

A novel process can be used for the preparation of polyalkyl (meth)acrylate polymers with improved compositional distribution, which leads to better producibility, solubility, and improved performance of the polymers in lubricant compositions, especially in engine oil formulations.

Process for the preparation of polyalkyl (meth)acrylate polymers

The invention relates to acrylate-olefin copolymers and to a method for preparing these polymers. The present invention is also directed to lubricant compositions comprising these copolymers, and to the use of these copolymers as a lubricant additive or a synthetic base fluid in a lubricating oil composition, preferably in a gear oil composition, a transmission oil composition, a hydraulic oil composition, an engine oil composition, a marine oil composition, an industrial lubricating oil composition or in grease.

Acrylate-olefin copolymers as high viscosity base fluids

Polyalkyl(meth)acrylates contain specified amounts of long-chain alkyl (meth)acrylates and functional monomers. Lubricant compositions can contain such polyalkyl(meth)acrylates, and the polyalkyl(meth)acrylates can be used as viscosity index (VI) improvers with good fuel economy as well as soot-dispersant function. The polyalkyl(meth)acrylates can provide equal or even unproved deposits in lubricant compositions, especially in engine oil (EO) compositions.

Polyalkyl(meth)acrylates for improving fuel economy, dispersancy and deposits performance

Selected comb polymers include specified amounts of macromonomer and imide functionalization. Further, a method is useful for the preparation of such comb polymers. Lubricant compositions including such comb polymers are useful for reducing wear and fuel consumption of lubricant compositions, especially of engine oil (EO) compositions.

Comb polymers comprising imide functionality

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Darmstadt, Germany

Fabian Ziegler