Patent application number | Description | Published |
20090029888 | AMINE TUNGSTATES AND LUBRICANT COMPOSITIONS - This invention relates to lubricating oil additives, and to lubricating oil compositions, their method of preparation, and use. More specifically, this invention relates to several novel lubricating oil additives and compositions which contain a tungsten compound and an antioxidant, namely aminic antioxidants such as a secondary diarylamine or an alkylated phenothiazine. The use of the tungsten compound with the secondary diarylamine and/or the alkylated phenothiazine provides improved oxidation and deposit control to lubricating oil compositions. The lubricating oil compositions of this invention are particularly useful as crankcase and transmission lubricants, gear oils and other high performance lubricant applications. | 01-29-2009 |
20100117022 | LUBRICANTS FOR REFRIGERATION SYSTEMS - A polyol ester suitable for use as a lubricant or a lubricant base stock has a kinematic viscosity at 40° C. less than or equal to 22 cSt and a viscosity index of greater than or equal to 140. The ester comprises a reaction product of (a) at least one polyhydric alcohol having at least 2 primary hydroxyl groups, (b) at least one monocarboxylic acid having 2 to 15 carbon atoms and (c) at least one polycarboxylic acid having 2 to 15 carbon atoms, wherein the number of acid groups derived from the polycarboxylic acid(s) is at least 25% of the total number of acid groups derived from the monocarboxylic and polycarboxylic acids. | 05-13-2010 |
20100181523 | CARBON DIOXIDE-BASED WORKING FLUIDS FOR REFRIGERATION AND AIR CONDITIONING SYSTEMS - A working fluid comprising (a) a refrigerant comprising carbon dioxide and (b) a poly(neopentylpolyol)ester composition produced by reacting a neopentylpolyol having the formula: | 07-22-2010 |
20100190672 | PRODUCTION OF POLYOL ESTER LUBRICANTS FOR REFRIGERATION SYSTEMS - A poly(neopentylpolyol) ester composition is produced by reacting a neopentylpolyol having the formula: | 07-29-2010 |
20110079749 | LUBRICANTS FOR REFRIGERATION SYSTEMS - A polyol ester suitable for use as a lubricant or a lubricant base stock has a kinematic viscosity at 40° C. greater than or equal to 200 cSt and a viscosity index of greater than or equal to 100. The ester comprises the reaction product of (a) a polyhydric alcohol component comprising at least 50 mole % of penterythritol, and (b) a carboxylic acid component comprising:
| 04-07-2011 |
20110240910 | Refrigeration Oil and Compositions with Carbon Dioxide Refrigerant - Lubricant compositions comprising certain mixtures of esters of pentaerythritol, di-pentaerythritol, tri-pentaerythritol and higher pentaerythritol oligomers are ideally suited for use with CO | 10-06-2011 |
20130200294 | Refrigeration Oil and Compositions with Hydrocarbon Refrigerants - Polyol ester lubricant compositions comprising predominately straight chain C | 08-08-2013 |
20130207022 | Working Fluids Comprising Difluoromethane and Di-Pentaerythritol Ester - Mixtures of select neopentyl polyol esters are found to be highly miscible with the refrigerant R-32 over a wide temperature range. Working fluids are provided comprising R-32 and a polyol ester lubricant composition having a kinematic viscosity at 40° C. of from 32 to 120 cSt, said lubricant composition comprising C | 08-15-2013 |
20130207023 | Polyester Lubbricant for Working Fluids Comprising Difluoromethane - Mixtures of select neopentyl polyol esters are found to be highly miscible with the refrigerant R-32 over a wide temperature range. Working fluids are provided comprising R-32 and a lubricant containing these select neopentyl polyol esters and having a kinematic viscosity at 40° C. of 32 cSt or higher. Specifically, the lubricant composition of the invention comprises a mixture of alkylcarboxy esters of neopentyl polyols, wherein at least 10 wt % of all neopentyl polyol esters are esters of pentaerythritol oligomers of 4 or more pentaerythritol monomer groups, and wherein a majority of the alkylcarboxylate groups of the alkylcarboxy esters of neopentyl polyols are pentanoyl groups wherein at least 15% of the pentanoyl groups are branched. | 08-15-2013 |
20140097379 | Production of Polyol Ester Lubricants for Refrigeration Systems - A poly(neopentylpolyol) ester composition is produced by reacting a neopentylpolyol having the formula: | 04-10-2014 |