Afton Chemical Corporation

The University of Waterloo

Afron Chemical Corporation

Sheng Jiang

Arturo Carranza

Ashutosh Gupta

Kongsheng Yang

John T Loper

Akhilesh Duggal

Joseph S Bradley

Youhong Wang

Kearsley Dillon

Kun Liu

Jean Duhamel

Solmaz Pirouz

Ashu Gupta

The present disclosure provides for methods of improving the performance of a combustion engine after-treatment device, such as particulate filters and/or three-way catalyst systems, over its useful life by using a lubricating oil composition including one or more base oils of lubricating viscosity and an additive package with increased amounts of least one oil-soluble silicon-containing compound.

Methods of improving the performance of combustion engine after-treatment devices

The present disclosure relates to lubricating compositions and methods of lubricating a spark-ignition engine effective to depress low-speed pre-ignition (LSPI) events and to maintain low foaming and/or aeration through selected silicon chemistries and treat rates.

Silicon-containing compounds for lubricants

Melamine-based compounds suitable, in one embodiment, as a corrosion inhibitor for lubricating compositions and, in particular, a corrosion inhibitor for transmission fluids (manual, automatic, dual-clutch, or electric), axle fluids, differential fluids, tractor fluids, industrial gear fluids, and/or lubricating fluids for other gear-type applications. The melamine-based compounds are in the form of oil-soluble hydrocarbyl-substituted melamine derivatives comprising the reaction product of a hydrocarbyl-substituted succinic anhydride reacted with melamine at conditions effective to form a hydrocarbyl-substituted melamine polycarboxylic acid or anhydride compound.

Melamine-based compounds for lubricating compositions

A viscosity index improver comprising a reaction product of (i) an acylated copolymer obtainable by acylating a copolymer of ethylene and one or more C-Calpha-olefins having an Mn of 3,000 to 250,000 g/mol; and (ii) a compound of the formulae (III)-(V): wherein R, R, R, R, Rand Rare independently selected from a hydrogen and an optionally substituted linear or branched alkyl or alkenyl group, and R, R, R, R, R, and Rare independent selected from an optionally substituted linear or branched alkyl or alkenyl group, and a sum of the number of carbon atoms in each compound of the formulae (III)-(V) is from 6 to 31.

Multifunctional branched polymers with improved low-temperature performance

A lubricating composition including a polymer blend of a modified styrene-maleic anhydride copolymer and poly(meth)acrylate copolymer effective to maintain a pumpable fluid at low temperatures.

Engine oils with low temperature pumpability

A multi-functional olefin copolymer viscosity index improver and a lubricating oil composition including such lubricant additive that provides improved viscometric properties and helps reduce low speed pre-ignition events at the same time. In one approach, the multi-functional olefin copolymer viscosity index improver is silicone functionalized and includes an acylated olefin copolymer with aminosilane or aminosiloxone pendant or side groups.

Silicone functionalized viscosity index improver

A viscosity index improver comprising a reaction product of (i) an acylated copolymer obtainable by acylating a copolymer of ethylene and one or more C-Calpha-olefins having an Mn of 3,000 to 250,000 g/mol; and (ii) a compound of the formulae (I)-(V): wherein R, R, R, R, R, Rand Rare independently selected from a hydrogen and an optionally substituted linear or branched alkyl or alkenyl group, and R, R, R, and RR, R, R, R, R, and Rare independent selected from an optionally substituted linear or branched alkyl or alkenyl group, and a sum of the number of carbon atoms in each compound of the formulae (I)-(V) is from 6 to 31.

The present disclosure relates to oxazoline modified lubricant additives that have dispersant properties and lubricating oil compositions including such dispersant lubricant additives. The disclosure also relates to the use of lubricant compositions comprising the additives of the disclosure for improving the soot or sludge handling characteristics of an engine lubricant composition while providing robust and consistent frictional performance at the same time.

Oxazoline modified dispersants

The present disclosure relates to lubricant additives such as dispersants and dispersant viscosity modifiers including acyl peptide grafted polymers and lubricating oil compositions comprising such additives. The disclosure also relates to the use of lubricant compositions comprising the additives herein for improving the soot or sludge handling characteristics of an engine lubricant composition and while minimizing the deterioration of engine's elastomer compatibility.

Amino acid grafted polymer with soot handling properties

The present disclosure relates to oxazoline modified lubricant additives that have dispersant properties and lubricating oil compositions comprising said dispersant lubricant additives. The disclosure also relates to the use of lubricant compositions comprising the additives of the disclosure for improving the soot or sludge handling characteristics of an engine lubricant composition, while minimizing the deterioration of engine seals.

Grafted polymer with soot handling properties

A lubricating oil composition having greater than 50 wt % of a base oil and 0.1 wt % to 20 wt %, both based on the total weight of the lubricating oil composition, of a dispersant viscosity modifier obtainable by: wherein X is oxygen, and R is an optionally substituted hydrocarbylene group having from 1 to 20 carbon atoms; and

Polymeric viscosity modifiers for use in lubricants

The present disclosure relates to viscosity index modifiers that have dispersant properties and lubricating oil compositions comprising said viscosity index modifiers. The viscosity index modifier is the reaction product of an acylated olefin copolymer, a polyamine, and a dicarboxylic acid or anhydride thereof that can react with a free primary amine of the polyamine to form a ring moiety. The disclosure also relates to the use of lubricant compositions comprising the viscosity index improvers of the disclosure for improving the soot or sludge handling characteristics of an engine lubricant composition, while minimizing the deterioration of engine seals.

The present invention relates to methods for determining the level of intermolecular interaction of a polymer based on the fraction of intermolecular interaction (f) relative to the inter, total molecular interaction, which includes both intermolecular and intramolecular interactions. Further provided herein is a method of identifying a suitable viscosity index improver based on the value of f. The identified suitable viscosity index improver can be used in a lubricating oil composition for, e.g., a power transmission system.

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Glen Allen, VA, United States of America

Sheng Jiang