POLYMETHACRYLATES AS HIGH VI VISCOSITY MODIFIERS

A lubricating composition contains an oil of lubricating viscosity and 0.5 to 10 percent by weight of a poly(meth)acrylate viscosity modifier polymer comprising (i) 15 weight percent to 35 weight percent monomer units of methyl (meth)acrylate, (ii) 0 to 10 weight percent monomer units of one or more...

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Bibliographic Details
Main Authors QIN, Haihu, BAUM, Marina, DOHNER, Brent R
Format Patent
LanguageEnglish
French
German
Published 27.03.2019
Subjects
CHEMISTRY
FUELS
INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS
LUBRICANTS
LUBRICATING COMPOSITIONS
METALLURGY
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
TECHNICAL GASES CONTAINING CARBON MONOXIDE
USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Summary:A lubricating composition contains an oil of lubricating viscosity and 0.5 to 10 percent by weight of a poly(meth)acrylate viscosity modifier polymer comprising (i) 15 weight percent to 35 weight percent monomer units of methyl (meth)acrylate, (ii) 0 to 10 weight percent monomer units of one or more C 2 -C 6 alkyl (meth)acrylates, (iii) 50 to 85 weight percent monomer units of one or more C 8 -C 30 alkyl (meth)acrylates, and (iv) 0 to 10 weight percent monomer units of one or more nitrogen-containing monomers. Such a lubricating composition exhibits a high viscosity index and may impart improved fuel economy to an internal combustion engine.
Bibliography:Application Number: EP20180187225