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| Number | Title | Issue Date |
| 7384536 | Processes for making lubricant blends with low brookfield viscosities Lubricant blends and finished gear oils comprising a Fischer-Tropsch derived lubricant base oil fraction, a petroleum derived base oil, and a pour point depressant are provided. The Fischer-Tropsch derived lubricant base oil fraction comprises less than 0.30 weight ... | 06/10/2008 |
| 7329635 | Crude oil composition including dispersant material for mitigating fouling of process equipment and method for mitigating crude oil fouling A crude oil composition wherein fouling has been mitigating and a method for mitigating crude oil fouling. The composition includes crude oil and an improved dispersant material for mitigating fouling which comprises a reaction product of a polyamine and a polyisobu... | 02/12/2008 |
| 7320952 | Additive for viscoelastic fluid Composition and method for shortening the shear recovery time of cationic, zwitterionic, and amphoteric viscoelastic surfactant fluid systems by adding an effective amount of a co-gelling agent selected from triblock oligomeric compounds having hydrophilic (for exam... | 01/22/2008 |
| 7256242 | Esterified copolymers of polyalkenes/unsaturated acidic reagents useful as lubricant and fuel additives Esterified polyalkene/UAR copolymer reaction products useful as (1) a friction modifier for lubricating oils such as automatic transmission fluids to improve torque capacity and anti-shudder durability and for continuous variable transmissions (CVTs), (2) a friction... | 08/14/2007 |
| 7189682 | All-weather tractor hydraulic fluid using a mixture of viscosity modifier types to meet shear-stable multigrade viscosity requirements A composition of the following components: an oil of lubricating viscosity; a polymethacrylate viscosity modifier; an ester of a maleic acid/styrene copolymer; and optionally, an additive package that imparts to the fluid the capacity to meet bench and dynamometer t... | 03/13/2007 |
| 7183359 | Polypropylene having a high maleic anhydride content Polypropylene having high maleic anhydride content, between about 5 and about 45 wt %, may be prepared by first reacting a metallocene-prepared polypropylene having terminal unsaturation with one mole equivalent of maleic anhydride to give polypropylene having a sin... | 02/27/2007 |
| 7018957 | Method of using high molecular weight demulsifiers Homopolymers and copolymers of an esterified reaction product of an epoxidized mono-hydroxyl alcohol and a free radical polymerizable monomer are highly effective demulsifying agents. The molecular weight of the polymer is between from about 10,000 to about 500,000.... | 03/28/2006 |
| 6952324 | Hydrodynamic fluid bearing containing lubricants with reduced temperature sensitivity for disk drive application A disc drive storage system including a housing having a central axis, a stationary member that is fixed with respect to the housing and coaxial with the central axis, and a rotatable member that is rotatable about the central axis with respect to the stationary mem... | 10/04/2005 |
| 6821933 | Additives for improving the cold flow properties and the storage stability of crude oil The invention relates to additives for improving the flowability of mineral oils, containing: A) 1-40 wt. % of at least one copolymer, which is oil-soluble and improves the cold flow properties of mineral oil, selected from A1) cop... | 11/23/2004 |
| 6573224 | Two-cycle engine lubricant composition comprising an ester copolymer and a diester Improved performance of two-cycle and four-cycle engines is achieved by adding to the oil or fuel of such engines a composition that contains a copolymer of an alpha-olefin and a dialkyl fumarate or maleate and/or a synthetic diester compound that has abo... | 06/03/2003 |
| 6475963 | Carboxylate-vinyl ester copolymer blend compositions for lubricating oil flow improvement Compositions for improving at least the low temperature flow properties of high viscosity index, high saturates, low sulfur lubricating oils (also known as American Petroleum Institute Group II and Group III oils). The compositions comprise a mixture of l... | 11/05/2002 |
| 6174843 | Composition and method for lubricant wax dispersant and pour point improver This invention provides a composition and a method of using the composition for dispersing wax and improving the pour point of lubricating oils. The composition comprises an esterified styrene-maleic anhydride copolymer and an esterified alpha-olefin male... | 01/16/2001 |
| 6127325 | Viscosity index improver, process for preparing the same and lubricating oil composition A viscosity index improver for addition to lubricating oil or the like, which comprises a graft copolymer having structural units of an oil-soluble polymer (a) comprising an olefin polymer and structural units of a copolymer (b) of a monomer having a pero... | 10/03/2000 |
| 6025308 | Amine-functionalized polymers A method is disclosed for preparation of amine functionalized copolymers by reacting copolymers of alkyl methacrylate and maleic anhydride with N-phenyl-1,4-phenylenediamine in mineral oil and inert atmosphere at 40 to 75° C. The copolymers are useful vi... | 02/15/2000 |
| 5965498 | Two-cycle synthetic lubricating oil A two-cycle oil composition comprising: (a) 10-20% of a first synthetic ester base stock oil (a copolymer of an alpha-olefin with an ester of a dicarboxylic acid, viscosity 20 to 50 cSt at 100° C.); (b) 18-30% of a second synthetic ester base stock oil (... | 10/12/1999 |
| 5939365 | Lubricant with a higher molecular weight copolymer lube oil flow improver A lubricant which comprises: a mineral oil basestock which has been dewaxed via catalytic cracking and/or catalytic isomerization; an alkylene-alkylene copolymer; and a lubricating oil flow improver formed from the reaction product of: (a) an unsaturated ... | 08/17/1999 |
| 5910470 | Grease to be sealed in bearing A grease to be sealed in bearings which shows good lubricating properties within a wide temperature range from low to high temperatures, whereby it can prevent bearing noise while it is cold, and maintain its good properties including excellent high-tempe... | 06/08/1999 |
| 5798054 | Lubricant and combination lubricant and refrigerant composition A lubricant and combination lubricant and refrigerant composition for use in a refrigerating machine in which a substitute freon refrigerant, which lubricant contains a polymer of a fumaric ester or a fumaric ester and a copolymerizable alkylene, and opti... | 08/25/1998 |
| 5747596 | Gel-free alpha-olefin dispersant additives useful in oleaginous compositions Gel-free dispersant additives for lubricating and fuel oil compositions comprise at least one adduct of (A) -olefin homopolymer or interpolymer of 700 to 10,000 number average molecular weight, free radically grafted with an average of from about 0... | 05/05/1998 |
| 5716915 | Oil compositions Additives having certain hydrocarbyl groups improve the low temperature properties of hydrocarbon oils.... | 02/10/1998 |
| 5703023 | Lubricants with enhanced low temperature properties Lubricants having a Brookfield viscosity at -40° C. equal to or below 20,000 cP (preferably 15,000 or less) are formed from blends composed of a major amount of mineral oil in the range of about 90N to about 140N; and minor amounts of poly--olefin... | 12/30/1997 |
| 5641734 | Biodegradable chain bar lubricant composition for chain saws A lubricant composition is described which is useful as a chain bar lubricant for chain saws. The composition comprises (A) at least one triglyceride wherein the ratio of the oleic acid moiety:linoleic acid moiety is from about 2 up to about 90, (B) at least o... | 06/24/1997 |
| 5578237 | Gel-free -olefin dispersant additives useful in oleaginous compositions Gel-free dispersant additives for lubricating and fuel oil compositions comprise at least one adduct of (A) -olefin homopolymer or interpolymer of 700 to 10,000 number average molecular weight, free radically grafted with an average of from about 0... | 11/26/1996 |
| 5574100 | Polymer composition and core-shell elastomer used therefor A polymer composition comprising [A] a polymer selected from a copolymer of -olefin having at least 2 carbon atoms and a specific cyclic olefin, a ring-opening polymer of said specific cyclic olefin and a hydroganted, ring-opening polymer thereof a... | 11/12/1996 |
| 5516849 | Continuous process for producing adducted EPM or EPDM oil solution The present invention provides a continuous process for producing an adducted derivatized EPM or EPDM oil solution in which a grafted ethylene polymer is adducted with an antioxidant diamine for formation of an adduct during holding.... | 05/14/1996 |
| 5435928 | Copolymers from -ଲ-unsaturated dicarboxylic acid esters, and their use Lubricant or lubricant additives comprising copolymers of -ଲ-unsaturated dicarboxylic acid esters and -olefins. When the olefin to ester ratio is 0.5 to 4.0 the -olefins may have 10-16 C-atoms and the -ଲ-unsaturated... | 07/25/1995 |
| 5366647 | Derivatized ethylene alpha-olefin polymer useful as multifunctional viscosity index improver additive for oleaginous composition (PT-796) The present invention is directed to an oil-soluble oleaginous composition additive comprising at least one terminally unsaturated ethylene alpha-olefin polymer of from above 20,000 to about 500,000 number average molecular weight substituted with mono- o... | 11/22/1994 |
| 5312554 | Process for preparing stable oleaginous compositions According to the present invention, oleaginous compositions having improved stability are provided, wherein high molecular weight ashless dispersants and metal detergents are preblended at a temperature of at least 100° C. for a period of from 1 to 10 ho... | 05/17/1994 |
| 5298565 | Graft copolymers and lubricants containing such as dispersant-viscosity improvers A graft polymer is prepared by grafting, onto a polymeric substantially saturated hydrocarbon backbone, a free-radical polymerizable vinyl nitrogen monomer, which grafting takes place with improved efficiency in the presence of minor amounts of a volatile... | 03/29/1994 |
| 5290868 | Multifunctional viscosity index improver derived from polyamine containing one primary amine group and at least one secondary amine group and degraded ethylene copolymer An oil soluble nitrogen containing grafted degraded ethylene copolymers useful as multifunctional viscosity index improvers or modifiers, such as VI improver-dispersant additives. The nitrogen containing grafted degraded ethylene copolymers are grafted wi... | 03/01/1994 |
| 5277833 | Ethylene alpha-olefin polymer substituted mono-and dicarboxylic acid lubricant dispersant additives The present invention is directed to an oil-soluble lubricating oil additive comprising at least one terminally unsaturated ethylene alpha-olefin polymer of 300 to 10,000 number average molecular weight substituted with mono- or dicarboxylic acid producin... | 01/11/1994 |
| 5275747 | Derivatized ethylene alpha-olefin polymer useful as multifunctional viscosity index improver additive for oleaginous composition The present invention is directed to an oil-soluble oleaginous composition additive comprising at least one terminally unsaturated ethylene alpha-olefin polymer of from above 20,000 to about 500,000 number average molecular weight substituted with mono- o... | 01/04/1994 |
| 5124059 | Esters of carboxy-containing interpolymers An ester of a carboxy-containing interpolymer is disclosed, said interpolymer having an RSV of from about 0.05 to about 2. The esterified polymer will include at least an ester group (A) which is a carboxylic ester group having at least about 8 aliphatic ... | 06/23/1992 |
| 5112510 | Carboxylate polymer and viscosity index improver containing oleaginous compositions A lubricating oil composition exhibiting improved flow properties, specifically low temperature flow properties, and viscometric properties, particularly low temperature viscometric properties comprising lubricating oil and (i) an amount effective to impr... | 05/12/1992 |
| 5108629 | Organic lubricating coating composition for use in plastic deformation of metal sheet An organic lubricating coating composition for use in plastic deformation of a metal sheet comprises a maleic anhydride/styrene copolymer which has been at least partially esterified with one or more organic hydroxy compounds, or a salt of the esterified ... | 04/28/1992 |
| 5021173 | Friction modified oleaginous concentrates of improved stability According to the present invention, oleaginous compositions having improved storage stability properties are provided, which comprise a combination of ashless dispersants, friction modifier and oil-soluble copper antioxidants, wherein the composition is s... | 06/04/1991 |
| 5011505 | Flow improvers and cloud point depressants Additives suitable for improving the flow and/or depressing the cloud point of crude oils, lubricating oils and especially fuel oils are polymers containing defined alkyl groups of at least 8 carbon atoms chain length. Such polymers are either (a) of a mi... | 04/30/1991 |
| 4994196 | Two-cycle engine oil composition A two-cycle engine oil composition comprising: (I) 100 parts by weight of a base oil composed of (A) 20 to 80% by weight of a copolymer of an -olefin with an ester of a dicarboxylic acid, said copolymer having a kinematic viscosity of 20 to 50 cSt at 10... | 02/19/1991 |
| 4963279 | C14-carboxylate polymer and viscosity index improver containing oleaginous compositions A lubricating oil composition comprising lubricating oil and (i) an amount effective to improve the low temperature flow properties of said lubricating oil composition of additive consisting essentially of at least one law molecular weight polymer or interpoly... | 10/16/1990 |
| 4931197 | Copolymers for -ଲ-unsaturated dicarboxylic acid esters wherein said esters are comprised of ethoxylated esters, methods for their production as well as their use as lubricant for the working-up of plastics The copolymers of the invention are made from ,ଲ-unsaturated dicarboxylic acid esters and -olefins. The -olefins employed have 8 to 24 C-atoms and the ,ଲ-unsaturated dicarboxylic acid esters are made solely from eth... | 06/05/1990 |
