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| Number | Title | Issue Date |
| 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 |
| 7101928 | Polymeric thickeners for oil-containing compositions Novel thickeners for oil-containing compositions are crystalline polymers, preferably side chain crystalline polymers, which (a) have a crystalline melting point, Tp, and an onset of melting temperature, To, such that Tp−To | 09/05/2006 |
| 7018962 | Viscosity index improver concentrates A viscosity index (VI) improver concentrate containing at least one VI improver, from 0 to about 5 mass % of lubricating oil flow improver (LOFI) and diluent oil, wherein the diluent oil has a kv100 of at least about 3.0 cSt and a CCS at −35° C. of les... | 03/28/2006 |
| 6734147 | Lubricant compositions and methods A process is disclosed for manufacturing a lubricant composition comprising combining a superabsorbent polymer with a material for decreasing friction between moving surfaces. The superabsorbent polymer absorbs from about 25 to greater than 100 times its weight in w... | 05/11/2004 |
| 6402983 | Flame retardant hydraulic oil containing a partial ester of a polyol and a monocarboxylic acid Disclosed herein is a flame retardant hydraulic oil excellent in the flame retardancy, unaccompanied by the dangers of pinhole fire at sites of use and giving rise to no environmental contamination. This flame retardant hydraulic oil contain a hydraulic base o... | 06/11/2002 |
| 6361711 | Flame retardant hydraulic oil containing a synthetic ester formed by reaction of a polyol and a mixture of carboxylic acids including oleic acid and isostearic acid Disclosed herein is a flame retardant hydraulic oil excellent in the flame retardancy, heat stability and oxidative stability, unaccompanied by the dangers of pinhole fire and giving rise to no environmental contamination. This flame retardant hydraulic oil co... | 03/26/2002 |
| 6034041 | Lubricant for metal forming Disclosed is a solid or aqueous lubricant concentrate used for the cold forming of metals, which, with reference to the solids content, including a) 20 to 50 parts by weight polyethylene with a softening point above 120° C. and a particle size int he ran... | 03/07/2000 |
| 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 |
| 5538651 | Additive to improve fluidity of oil solutions of sheared polymers A composition comprising (A) an ethylene-alpha olefin-bicyclic non-conjugated diene copolymer, wherein the alpha olefin contains from 3 to about 24 carbon atoms; (B) at least one organic sulfur containing compound selected from the group consisting of mer... | 07/23/1996 |
| 5416162 | Compatibilizer for a viscosity index improving polymer blend A method for making compatibilizer for a concentrated viscosity index improving polymer blend includes polymerizing a mixture of (meth)acrylate monomers in the presence of a polyolefin polymer. A concentrated blend of viscosity index improving polymers in... | 05/16/1995 |
| 5217636 | Lubricating oil viscosity index improver composition The invention is an improvement in wide viscosity range multigrade lubricants of the type having a mineral oil base into which is added a viscosity index improver and a wear enhancer package and, more specifically, in the viscosity index improver which is... | 06/08/1993 |
| 5116522 | Grease composition containing an ethylene copolymer having a melt index of at least about 40 A lubricating composition having improved high and low temperature properties is disclosed. More specifically, the addition of a certain ethylene copolymers having a Melt Index of at least about 40 g/10 mins. to a mixture comprising (1) a lubricating oil,... | 05/26/1992 |
| 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 |
| 5108635 | Viscosity additive for lubricating oils, process for its preparation and lubricating compositions based on the said additive A composition of matter, particularly useful as a viscosity additive comprising: 6 to 15 parts by weight of a 60/40-54/46 ethylene/propylene copolymer of Mw 155,000-250,000 (OCP), 2 to 8 parts by weight of a poly(C1 -C20 alkyl methacrylat... | 04/28/1992 |
| 4956111 | Methacrylate pour point depressants and compositions A pour point depressant for lubricating oils comprises a poly(methacrylate) polymer having the repeating unit ##STR1## wherein R is an alkyl group having an average chain length in the polymer of 12.6 to 13.8, and n is an integer indicating the numbe... | 09/11/1990 |
| 4922046 | Liquid polymer composition and use thereof A liquid polymer composition contains: (A) a liquid low molecular weight ethylene--olefin copolymer comprising 30 to 70 mol % of ethylene component units and 30 to 70 mol % of -olefin component units, having a number average molecular weight... | 05/01/1990 |
| 4844829 | Methacrylate pour point depressants and compositions A pour point depressant for lubricating oils comprises a poly(methacrylate) polymer having the repeating unit ##STR1## wherein R is an alkyl group having an average chain length in the polymer of 12.6 to 13.0, and n is an integer indicating the numbe... | 07/04/1989 |
| 4776967 | Lubricating oil composition The present invention relates to a lubricating oil composition comprising: (A) a mineral oil having a kinematic viscosity at 100° C. of 1 to 50 centistokes and a viscosity index of at least 60, (B) 0.5 to 20% by weight based on the total weight of the composition ... | 10/11/1988 |
| 4761241 | Oily lubricant for cold plastic processing of metallic material An oil lubricant for cold plastic processing of metallic material obtained by compounding either one or both types of polymers of 2-ethyl polyacrylate-hexyl ester and polymethacrylic acid lauryl ester with one or two types of oiliness improvers selected f... | 08/02/1988 |
| 4490267 | Preparation of a lubricating oil additive, an additive thus prepared _and a lubricating oil containing this additive Lubricating oil additives having superior viscometric and detergent properties are prepared by polymerizing an alkyl(meth)acrylate in a solvent containing a star-shaped polymer.... | 12/25/1984 |
| 4290925 | Lubricating oil additives What is disclosed is a concentrated polymer emulsion useful as a lubricating oil additive for improving the viscosity index thereof, said emulsion comprising: (1) a dispersed phase of an olefinic copolymer having a molecular weight complementary with resp... | 09/22/1981 |
| 4151102 | Synthetic bearing lubricant A synthetic bearing lubricant prevents wear even under very high loads and is such that when it contaminates the rolling lubricant the rolled product is not stained. The bearing lubricant contains poly-isobutene, at least one ester of a C2 to C... | 04/24/1979 |
| 4149984 | Lubricating oil additives A method is disclosed for making a polymer-in-oil solution, useful for improving the viscosity-temperature relationship and low-temperature properties of lubricating oils when added thereto, which method comprises a first step of polymerizing a methacryli... | 04/17/1979 |
| 4146492 | Lubricant compositions which exhibit low degree of haze and methods of preparing same A pour depressant polyalkylacrylate comprising an interpolymer of (A) C1 -C15 alkylacrylate and (B) C16 -C22 alkylacrylate, said interpolymer having an average molecular weight of between about 1000 and 25,000, ... | 03/27/1979 |
| 4073737 | Hydrogenated copolymers of conjugated dienes and when desired a vinyl aromatic monomer are useful as oil additives A hydrogenated copolymer produced by copolymerization of from about 1 to about 10 mol percent butadiene and at least one other C5 to C12 conjugated diene, and, if desired, in order to provide a block copolymer, up to 45 mole percent ... | 02/14/1978 |
| 4073738 | Lubricating oil compositions containing alkyl acrylate or methacrylate polymers and copolymers of styrene and conjugated diene Mineral lubricating oil compositions which contain a predominant proportion of a mineral lubricating oil together with a pour point depressant based on alkyl acrylate or alkyl methacrylate polymers and a viscosity index (VI) improver comprising a special ... | 02/14/1978 |
| 4031020 | Central system fluid composition A central system fluid composition composed of 5-30% by weight of a viscosity index improver, up to 10% by weight of another additive, and the balance being a hydrocarbon-type base oil, which is characterized in that the hydrocarbon-type base oil is compo... | 06/21/1977 |
| 3992303 | Metal cold forming process and lubricant composition therefor A method of cold forming ferrous metals is disclosed employing as a cold-forming lubricant a dry solid coating comprising a film of a chlorine-containing, film-forming polymer and a destabilizing agent applied to the surface of a ferrous metal workpiece, ... | 11/16/1976 |
