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    Method for reducing piston deposits in a marine diesel engine
    71.
    发明授权
    Method for reducing piston deposits in a marine diesel engine 有权

    公开(公告)号：US11685872B2

    公开(公告)日：2023-06-27

    申请号：US16987694

    申请日：2020-08-07

    申请人： Infineum International Limited

    发明人： Jonathan M. Hughes ,  Timothy M. Clitherow ,  Adam P. Marsh

    IPC分类号： C10L10/04 ,  C10L10/06 ,  C10L1/16 ,  C10L1/196 ,  C10L1/14

    CPC分类号： C10L10/04 ,  C10L1/143 ,  C10L1/1616 ,  C10L1/196 ,  C10L10/06 ,  C10L2270/026

    摘要： A method of reducing the incidence of deposits on the pistons of a 4-stroke marine diesel engine during operation of the engine when it is fuelled with a marine residual fuel meeting the ISO 8217 2017 fuel standard for marine residual fuels and having a sulphur content of more than 0.1% and less than 0.5% by mass. The method includes the step of lubricating the engine using a lubricating oil composition comprising:



    a) at least 50% by mass, based on the mass of the composition, of an oil of lubricating viscosity;
    (b) 5 to 25% by mass, based on the mass of the composition, of an oil-soluble or oil-dispersible alkali metal or alkaline earth metal salicylate detergent, or a mixture of two or more oil-soluble or oil-dispersible alkali metal or alkaline earth metal salicylate detergents;
    (c) 0.1 to 10% by mass, based on the mass of the composition of one or more oil-soluble or oil-dispersible ashless dispersants; and optionally,
    (d) 0.1 to 10% by mass, based on the mass of the composition of a polyalkylene-substituted succinic anhydride.

    Oil Compositions
    76.
    发明申请
    Oil Compositions 有权

    公开(公告)号：US20210388284A1

    公开(公告)日：2021-12-16

    申请号：US17347686

    申请日：2021-06-15

    申请人： Infineum International Limited

    发明人： Beatrice N. Cattoz ,  Peter M. Wright ,  Andrew Dove ,  Rachel O'Reilly ,  Cinzia Clamor

    IPC分类号： C10M145/22 ,  C10M169/04 ,  C10M151/04

    摘要： An oil composition comprises at least 50 percent by mass, based on the mass of the composition, of an oil and 0.01 to 25 percent by mass, based on the mass of the composition, of a polymer comprising at least one poly(lactone) segment. The at least one poly(lactone) segment is derived from a lactone substituted by one or two hydrocarbyl groups, or substituted hydrocarbyl groups, at least one such group having at least 4 carbon atoms. The oil compositions are suitable for use in the lubrication of the crankcase of internal combustion engines.

    High Viscosity Index Comb Copolymer Viscosity Modifiers and Methods of Modify Lubricant Viscosity Using Same
    79.
    发明申请
    High Viscosity Index Comb Copolymer Viscosity Modifiers and Methods of Modify Lubricant Viscosity Using Same 有权

    公开(公告)号：US20210179960A1

    公开(公告)日：2021-06-17

    申请号：US16715748

    申请日：2019-12-16

    申请人： Infineum International Limited

    发明人： Nguyen Nga ,  Ronald Lewis ,  Ewan Galbraith

    IPC分类号： C10M145/14 ,  C08F290/04 ,  C10M169/04

    摘要： A comb copolymer viscosity modifier may be made by polymerization comprising at least, or consisting essentially of, the following monomers: (a) a hydrogenated polybutadiene-based (alk)acrylate ester macromonomer (which repeat units may comprise from 7.0 wt % to 18 wt % of the repeat units of the comb copolymer viscosity modifier); (b) a C3-C8 alkyl (alk)acrylate ester monomer (which repeat units may comprise from 40 wt % to 71 wt % or from 45 wt % to 64 wt % of the repeat units of the comb copolymer viscosity modifier); and (c) a C12-C24 alkyl (alk)acrylate ester monomer, wherein repeat units based on the C12-C24 alkyl (alk)acrylate ester monomer comprise at least 21.0 wt % (and optionally up to 35.0 wt %) of repeat units of the comb copolymer viscosity modifier. Lubricant compositions comprising the comb copolymer viscosity modifier, as well as uses thereof and methods for modifying viscosity, are also contemplated herein.