Abstract: Disclosed is a dispersant composition, suitable for use in lubricating oils. The dispersant composition is a reaction product of (i) a polyalkenyl succinimide post-treated with a post-treating agent selected from the group consisting of an organic carbonate, an epoxide, a lactone, a hydroxyaliphatic carboxylic acid, and combinations thereof; and (ii) an acylating agent.

Abstract: Disclosed is a dispersant composition, suitable for use in lubricating oils. The dispersant composition is a reaction product of (i) a polyalkenyl succinimide post-treated with a post-treating agent selected from the group consisting of an organic carbonate, an epoxide, a lactone, a hydroxyaliphatic carboxylic acid, and combinations thereof; and (ii) an acylating agent.

Abstract: A method is provided to determine the predisposition of a polymer to form network or gel in a lubricating oil which comprises obtaining a composition of a polymer in a diluent, measuring the shear stress as a function of shear rate, determining the yield stress using the Herschel-Bulkley equation and assessing the yield stress. A method is also provided to determine the predisposition of a polymer to form network or gel in a lubricating oil which comprises obtaining a composition of a polymer in a diluent, determining at least one of (i) the storage modulus G? and loss modulus G? of the composition by subjecting the composition to sinusoidal (oscillating) stress or strain of certain amplitude and frequency, (ii) the phase lag (angle) of the response strain or stress ?, or (iii) the tangent (tan) ?, and (c) assessing at least one of the G?, G?, ?, or tan(?) determined.

Abstract: Polymer compositions for use as viscosity modifiers comprising at least two ethylene-based copolymer components are provided. The polymer composition comprises (a) a first ethylene-?-olefin copolymer and (b) a second ethylene-?-olefin copolymer. The first ethylene-?-olefin copolymer (a) has an ethylene content from about 60 to about 80 wt % and the second ethylene-?-olefin copolymer (b) has an ethylene content of less than about 60 wt %. The first ethylene-?-olefin copolymer (a) has a Melt Flow Rate Ratio (MFRR), defined as the ratio of the MFR measured at 230° C./21.6 kg and at 230° C./2.16 kg, of greater than 30 and optionally also has a Melt Flow Rate (MFR) of at least about 1.5 g/10 min, measured by ASTM D 1238 condition L (230° C./2.16 kg). The present disclosure is also directed to lubricant compositions comprising a lubricating basestock and a polymer composition of the present disclosure and is further directed to reducing gelation in the lubricant compositions.

Abstract: Polymer compositions for use as viscosity modifiers comprising at least two ethylene-based copolymer components are provided. The polymer composition comprises (a) a first ethylene-?-olefin copolymer and (b) a second ethylene-?-olefin copolymer. The first ethylene-?-olefin copolymer (a) has an ethylene content from about 60 to about 80 wt % and the second ethylene-?-olefin copolymer (b) has an ethylene content of less than about 60 wt %. The first ethylene-?-olefin copolymer (a) has a Melt Flow Rate Ratio (MFRR), defined as the ratio of the MFR measured at 230° C./21.6 kg and at 230° C./2.16 kg, of greater than 30 and optionally also has a Melt Flow Rate (MFR) of at least about 1.5 g/10 min, measured by ASTM D 1238 condition L (230° C./2.16 kg). The present disclosure is also directed to lubricant compositions comprising a lubricating basestock and a polymer composition of the present disclosure and is further directed to reducing gelation in the lubricant compositions.

Abstract: A method is provided to determine the predisposition of a polymer to form network or gel in a lubricating oil which comprises obtaining a composition of a polymer in a diluent, measuring the shear stress as a function of shear rate, determining the yield stress using the Herschel-Bulkley equation and assessing the yield stress. A method is also provided to determine the predisposition of a polymer to form network or gel in a lubricating oil which comprises obtaining a composition of a polymer in a diluent, determining at least one of (i) the storage modulus G? and loss modulus G? of the composition by subjecting the composition to sinusoidal (oscillating) stress or strain of certain amplitude and frequency, (ii) the phase lag (angle) of the response strain or stress ?, or (iii) the tangent (tan) ?, and (c) assessing at least one of the G?, G?, ?, or tan(?) determined.

Abstract: Lube oil compositions and methods for making the same are provided. The lubricating oil composition can include at least one propylene-based polymer comprising 60 wt % to 98 wt % propylene derived units, other units derived from one or more other alpha olefins, and a base oil. The propylene-based polymer can have a triad tacticity of 90% or more, a heat of fusion of less than 80 J/g, and a weight average molecular weight (Mw) as measured by GPC of from 70,000 to 250,000.

Abstract: The invention relates to viscosity modifier polymers, concentrate and lubricant formulations utilizing a diblock polymer having one block A and one block B, block A contributing from 15 to 30% of the total chain length and block B from 70 to 85% of the total chain length, wherein block A comprises at least 93 wt % of ethylene and at least one other alpha-olefin and block B comprises an ethylene content between 40 and 75 wt % and at least one other alpha-olefin and wherein the resulting block copolymer has an average ethylene content of between about 60 wt % to 80 wt % ethylene, a fast Gaussian NMR relaxation signal between 17 and 22% and a slow exponential NMR relaxation signal between 58 and 68% of the total NMR relaxation signal, a SSI of at least 35% and a TE of at least 3.5 in order to obtain improvements in fuel economy.

Abstract: A polymeric composition is disclosed which contains an ethylene-alpha olefin copolymer backbone having at least 82 mole % ethylene and at most 18 mole % of an about C3 to about C28 alpla-monoolefin, wherein the alpha-monoolefin has a monomer distribution resulting from a RaRb product measured by 13C-NMR below 0.8 and a level of regio-inversions less than 2 per 1000 carbon atoms, and an amide group having the formula (I) and/or an imide group having the formula (II): wherein P is the ethylene-alpha olefin copolymer backbone, R1 is hydrogen or —CO—X?, R2 and R3 are independently hydrogen or —CH3, X and X? are independently —OH, alkoxyl of 1 to about 24 carbon atoms, or a secondary or tertiary amine, provided that at least one of X and X? is a secondary or tertiary amine, and Z is a tertiary amine, wherein Z and X and X?, when X and X? are secondary or tertiary amines, are each independently derived from one or more amine compounds described herein.

Abstract: Lube formulations and concentrates are disclosed herein. The formulations comprise copolymers of ethylene and propylene.