University of Minnesota

Evonik Operations Gmbh

Evonik Oil Additives Gmbh

Katrin Schoeller

Klaus Schimossek

Marc Andrew Hillmyer

Boris Eisenberg

Fabian Ziegler

Timothy P Lodge

Dmitriy Shakhvorostov

Mohammad T Savoji

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

A graft copolymer can include, in its backbone, at least one segment having repeating units obtainable by ring-opening metathesis polymerization (ROMP) of an optionally substituted cycloalkene, and at least one segment comprising repeating units obtainable by atom transfer radical polymerization (ATRP) of a (meth)acrylate. The corresponding graft copolymer is highly suitable for use as an oil additive in internal combustion engines, in particular, in combustion engines which are operated for longer periods of time at substantially constant operating temperatures.

Graft copolymers based on polyolefin backbone and methacrylate side chains

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Darmstadt, Germany

Katrin Schoeller