Abstract: Lubricant compositions include copolymers of monomers selected from C6-C10 alkyl methacrylate monomers, and monomers selected from C10-C18 alkyl methacrylate monomers, and a base oil or comprising a copolymer obtained by combining at least monomers selected from C6-C10 alkyl methacrylate monomers, and monomers selected from C10-C18 alkyl methacrylate monomers in a mixture and co-polymerizing the monomers. The lubricant compositions may find use in lubricating two-stroke marine engines by applying the lubricant compositions to at least one component of a two-stroke marine engine.

Abstract: Lubricant compositions include copolymers of monomers selected from C6-C10 alkyl methacrylate monomers, and monomers selected from C10-C18 alkyl methacrylate monomers, and a base oil or comprising a copolymer obtained by combining at least monomers selected from C6-C10 alkyl methacrylate monomers, and monomers selected from C10-C18 alkyl methacrylate monomers in a mixture and co-polymerizing the monomers. The methods for the preparation of the lubricant compositions, and lubricants uses.

Abstract: A method of increasing the spreading of a lubricant on the liner surface after it's delivery, wherein the method comprises preparing the lubricant compositions comprising copolymers of monomers (A) selected from C6-C10 alkyl methacrylate monomers, and monomers (B) selected from C10-C18 alkyl methacrylate monomers, and a base oil or comprising a copolymer obtained by combining at least monomers (A) selected from C6-C10 alkyl methacrylate monomers, and monomers (B) selected from C10-C18 alkyl methacrylate monomers in a mixture and co-polymerizing the monomers for increasing the spreading and/or the self-spreading of the lubricant on the cylinder liner surface after its delivery.

Abstract: Lubricant compositions include copolymers of monomers selected from C6-C10 alkyl methacrylate monomers, and monomers selected from C10-C18 alkyl methacrylate monomers, and a base oil or comprising a copolymer obtained by combining at least monomers selected from C6-C10 alkyl methacrylate monomers, and monomers selected from C10-C18 alkyl methacrylate monomers in a mixture and co-polymerizing the monomers. The methods for the preparation of the lubricant compositions, and lubricants uses.

Abstract: The present invention relates to a method for preparing solid microcapsules, comprising the steps of: a) adding under agitation a composition C1 comprising at least one active material to a cross-linkable liquid composition C2, wherein the active material is an additive to be used in the oil industry, composition C1 and composition C2 being immiscible with each other, so that a first emulsion is obtained, said first emulsion comprising droplets of composition C1 dispersed in composition C2, b) adding under agitation the first emulsion obtained in step a) to a liquid composition C3, composition C3 and composition C2 being immiscible with each other, so that a second emulsion is obtained, said second emulsion comprising droplets dispersed in composition C3, c) loading the second emulsion obtained in step b) in a mixer which applies a homogeneous controlled shear rate to said second emulsion, said shear rate being from 1 000 s?1 to 100 000 s?1, so that a third emulsion is obtained, said third emulsion comprising

Abstract: The present disclosure relates to a lubricant for marine engines including at least one base oil, at least one overbased detergent, at least one neutral detergent and at least one fatty amine.

Abstract: A lubricant composition for 4-stroke or 2-stroke marine engine includes at least one lubricant base oil for marine engine, at least one olefin copolymer, at least one hydrogenated styrene-isoprene copolymer, at least one glycerol ester and at least one detergent, whose use promotes fuel economy and has good properties regarding engine cleanliness, in particular crankcase cleanliness.

Abstract: A cylinder lubricant having a BN determined according to the standard ASTM D-2896 greater than or equal to 15 milligrams of potash per gram of lubricant, including: one or more lubricant base oils for marine engines, at least one detergent based on alkali or alkaline-earth metals, overbased with metallic carbonate salts, at least one neutral detergent, one or more oil-soluble alkoxylated fatty amines, having a BN determined according to the standard ASTM D-2896 comprised between 100 and 600 milligrams of potash per gram, where the percentage by mass of alkoxylated fatty amines with respect to the total weight of lubricant is chosen such that the BN provided by these compounds represents a contribution comprised between 2 and 8 milligrams of potash per gram of lubricant, and where the BN provided by the metallic carbonate salts represents a contribution of at the most 65%.

Abstract: The present disclosure relates to a lubricant for marine engines including at least one base oil, at least one overbased detergent, at least one neutral detergent and at least one fatty amine.

Abstract: The present invention for a two-stroke marine engine, which can be used with both high-sulphur content fuel oils and low-sulphur content fuel oils. It relates to a cylinder lubricant having a BN determined according to the standard ASTM D-2896 greater than or equal to 40 milligrams of potash per gram of lubricant, comprising a lubricant base stock for marine engines and at least one overbased detergent based on alkali metals or alkaline-earth metals, characterized in that it also contains a quantity of 0.01% to 10% preferably 0.1% to 2% by weight relative to the total weight of the lubricant, of one or more (A) compounds chosen from the primary, secondary or tertiary monoalcohols the alkyl or alkylene chain of which is saturated or unsaturated, linear or branched and comprises at least 12 carbon atoms.

Abstract: A lubricant composition for 4-stroke or 2-stroke marine engine includes at least one lubricant base oil for marine engine, at least one olefin copolymer, at least one hydrogenated styrene-isoprene copolymer, at least one glycerol ester and at least one detergent, whose use promotes fuel economy and has good properties regarding engine cleanliness, in particular crankcase cleanliness.

Abstract: A cylinder lubricant has a BN determined according to the standard ASTM D-2896 greater than or equal to 15 milligrams of potash per gram of lubricant, including: (a) one or more lubricant base oils for marine engines, (b) at least one detergent based on alkali or alkaline-earth metals, overbased with metallic carbonate salts, (c) at least one neutral detergent, (d) one or more oil-soluble alkoxylated fatty amines, having a BN determined according to the standard ASTM D-2896 comprised between 100 and 600 milligrams of potash per gram, where the percentage by mass of alkoxylated fatty amines with respect to the total weight of lubricant is chosen such that the BN provided by these compounds represents a contribution comprised between 2 and 8 milligrams of potash per gram of lubricant, and where the BN provided by the metallic carbonate salts represents a contribution of at the most 65%.

Abstract: The present invention relates to a cylinder lubricant having a BN determined according to standard ASTM D-2896 greater than or equal to 15, preferably greater than 20, preferably greater than 30, advantageously greater than 40 milligrams of potash per gram of lubricant, comprising: one or more lubricating base oils for marine engines, at least one detergent based on alkali or alkaline-earth metals, overbased with metallic carbonate salts, optionally in combination with one or more neutral detergents, one or more fatty amines and/or derivatives of oil-soluble fatty amines having a BN determined according to standard ASTM D-2896 comprised between 150 and 600 milligrams of potash per gram, preferably comprised between 200 and 500 milligrams of potash per gram. This lubricant has sufficient neutralization power vis-à-vis the sulphuric acid formed during the combustion of high-sulphur fuel oils, while limiting the formation of deposits during the use of low-sulphur fuel oils.

Abstract: The present invention relates to a cylinder lubricant having a BN determined according to standard ASTM D-2896 greater than or equal to 15, preferably greater than 20, preferably greater than 30, advantageously greater than 40 milligrams of potash per gram of lubricant, comprising: one or more lubricating base oils for marine engines, at least one detergent based on alkali or alkaline-earth metals, overbased with metallic carbonate salts, optionally in combination with one or more neutral detergents, one or more fatty amines and/or derivatives of oil-soluble fatty amines having a BN determined according to standard ASTM D-2896 comprised between 150 and 600 milligrams of potash per gram, preferably comprised between 200 and 500 milligrams of potash per gram. This lubricant has sufficient neutralization power vis-à-vis the sulphuric acid formed during the combustion of high-sulphur fuel oils, whilst limiting the formation of deposits during the use of low-sulphur fuel oils.

Abstract: The present invention for a two-stroke marine engine, which can be used with both high-sulphur content fuel oils and low-sulphur content fuel oils. It relates to a cylinder lubricant having a BN determined according to the standard ASTM D-2896 greater than or equal to 40 milligrams of potash per gram of lubricant, comprising a lubricant base stock for marine engines and at least one overbased detergent based on alkali metals or alkaline-earth metals, characterized in that it also contains a quantity of 0.01% to 10% preferably 0.1% to 2% by weight relative to the total weight of the lubricant, of one or more (A) compounds chosen from the primary, secondary or tertiary monoalcohols the alkyl or alkylene chain of which is saturated or unsaturated, linear or branched and comprises at least 12 carbon atoms.

Abstract: The invention relates to a grade SAE 30 or 40 lubricant oil for marine four-stroke engines, comprising: (a) 50 to 95% by weight of an oil of mineral or synthetic origin, (b) at least one nanoparticulate detergent of a quantity sufficient for the neutralisation of the acid compounds formed by oxidation of the sulphurous compounds in the fuel supplying the engine, (c) 1 to 20% by weight of at least one polyisobutylene which is soluble in the base oil, with a number average molecular weight of 500 to 8000 inclusive and a kinematic viscosity (at 100° C.) of 50 to 50,000 mm2/s inclusive, preferably 200 to 6,000 mm2/s, (d) 0.05 to 5.0% of at least one aminated anti-oxidant agent active at a temperature of or above 180° C. and the use of said oil for lubrication of a four-stroke marine engine.