The present disclosure provides a detergent additives and methods for preparing a sulfurized alkyl phenate product from polyalphaolefins.

The present disclosure provides a detergent additives and methods for preparing a sulfurized alkyl phenate product from polyalphaolefins.

The present disclosure provides a detergent additives and methods for preparing a sulfurized alkyl phenate product from polyalphaolefins.

The present disclosure provides a detergent additives and methods for preparing a sulfurized alkyl phenate product from polyalphaolefins.

The present disclosure relates to star polymers and, in some approaches, star polymers suitable for use as viscosity index improvers in lubricating oil compositions. The present disclosure further relates to oil compositions comprising such polymers. The disclosure also relates to star polymer compositions derived from a sulfur functionalized chain transfer agent core and select (meth)acrylate monomers.

The present disclosure relates to star polymers and, in some approaches, star polymers suitable for use as viscosity index improvers in lubricating oil compositions. The present disclosure further relates to oil compositions comprising such polymers. The disclosure also relates to star polymer compositions derived from a sulfur functionalized chain transfer agent core and select (meth)acrylate monomers.

The present invention relates to a lubricating composition containing an oil of lubricating viscosity and a dimercaptothiadiazole salt of a copolymer comprising units derived from monomers (i) an ?-olefin and (ii) an ethylenically unsaturated carboxylic acid or derivatives thereof (typically carboxylic acid groups or an anhydride), are partially esterified with an alcohol, or mixtures thereof, and wherein at least a portion of carboxylic acid groups not esterified are reacted with an amine. The invention further provides for a lubricating composition containing said copolymer. The invention further provides a method and use of lubricating composition in a mechanical device.

The present invention relates to a lubricating composition containing an oil of lubricating viscosity and a dimercaptothiadiazole salt of a copolymer comprising units derived from monomers (i) an ?-olefin and (ii) an ethylenically unsaturated carboxylic acid or derivatives thereof (typically carboxylic acid groups or an anhydride), are partially esterified with an alcohol, or mixtures thereof, and wherein at least a portion of carboxylic acid groups not esterified are reacted with an amine. The invention further provides for a lubricating composition containing said copolymer. The invention further provides a method and use of lubricating composition in a mechanical device.

The invention provides a lubricating composition containing an oil of lubricating viscosity and a block copolymer. The block copolymer may contain (a) a hydrophobic first block having C.sub.1-30 alkyl (meth)acrylic units, wherein at least 50 wt % of the C.sub.1-30 alkyl (meth)acrylic units are C.sub.12-15 alkyl (meth)acrylic units, and up to 50 wt % of the C.sub.1-30 alkyl (meth)acrylic units are C.sub.16-20 alkyl (meth)acrylic units, with the proviso that alkyl groups of the C.sub.1-30 alkyl (meth)acrylic units have an average total number of carbon atoms of at least 8; and (b) a second block having (meth)acrylic units further having a heteroatom-containing group providing a polar group. The invention further relates to a method of lubricating an internal combustion engine by lubricating the engine with the lubricating composition. The invention further relates to the use of the block copolymer as an emulsifier and/or pour point depressant.

The invention provides a lubricating composition containing an oil of lubricating viscosity and a block copolymer. The block copolymer may contain (a) a hydrophobic first block having C.sub.1-30 alkyl (meth)acrylic units, wherein at least 50 wt % of the C.sub.1-30 alkyl (meth)acrylic units are C.sub.12-15 alkyl (meth)acrylic units, and up to 50 wt % of the C.sub.1-30 alkyl (meth)acrylic units are C.sub.16-20 alkyl (meth)acrylic units, with the proviso that alkyl groups of the C.sub.1-30 alkyl (meth)acrylic units have an average total number of carbon atoms of at least 8; and (b) a second block having (meth)acrylic units further having a heteroatom-containing group providing a polar group. The invention further relates to a method of lubricating an internal combustion engine by lubricating the engine with the lubricating composition. The invention further relates to the use of the block copolymer as an emulsifier and/or pour point depressant.