copolímeros compreendendo grupos éster e uso dos mesmos em lubrificantes

The present invention relates to copolymers comprising ester groups and having at least one nonpolar segment P and at least one polar segment D, the polar segment D having at least 8 repeat units and the proportion by weight of dispersing repeat units in the polar segment D being at least 30%, based...

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Bibliographische Detailangaben
Hauptverfasser:	TORSTEN STÖHR, BORIS EISENBERG, ELLEN SUCHERT
Format:	Patent
Sprache:	por
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON FUELS LUBRICANTS LUBRICATING COMPOSITIONS MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PEAT PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MONOXIDE THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Beschreibung
Zusammenfassung:	The present invention relates to copolymers comprising ester groups and having at least one nonpolar segment P and at least one polar segment D, the polar segment D having at least 8 repeat units and the proportion by weight of dispersing repeat units in the polar segment D being at least 30%, based on the weight of the polar segment D, wherein the copolymer comprising ester groups is obtainable by NMP (nitroxide mediated polymerization). The invention further relates to lubricant oils having improved friction properties and comprising said copolymers.