COPOLYMERS COMPRISING ESTER GROUPS AND USE THEREOF IN LUBRICANTS
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United States of America Patent
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Issued Date -
Sep 26, 2013
app pub date -
Feb 9, 2012
filing date -
Mar 14, 2011
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Abandoned
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Abstract
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.
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