Patent application number | Description | Published |
20100087350 | CAPPED POLYESTER POLYOL LUBRICANT COMPOSITION - The present invention relates to polyester polyol lubricant compositions, some of which are capped, that include two or more chemically linked ester moieties, at least one of which derives from a seed or vegetable oil, and their preparation. The compositions have a pour point temperature of −10° centigrade or less without a pour point depressant and a viscosity at 25° centigrade within a range of 40 centipoises (0.04 pascal second) to 2000 centipoises (2 pascal seconds) when they either lack an initiator moiety or include an initiator moiety other than a dendritic initiator moiety, and a pour point temperature of −5° centigrade or less without a pour point depressant and a viscosity at 25° centigrade within a range of 40 centipoises (0.04 pascal second) to 8000 centipoises (8 pascal seconds) when they include a dendritic initiator moiety. The present invention also relates to a process for removing at least a portion of saturates from said compositions. | 04-08-2010 |
20100197539 | WATER-GLYCOL HYDRAULIC FLUID COMPOSITIONS - A morpholine-free water-hydraulic liquid composition includes water, a glycol, a polyglycol such as a polyalkylene glycol, an aliphatic carboxylic acid that contains from six to 14 carbon atoms, and a combination of amines and alkanolamines. | 08-05-2010 |
20120108482 | POLYAKYLENE GLYCOLS USEFUL AS LUBRICANT ADDITIVES FOR GROUPS I-IV HYDROCARBON OILS - Certain polyalkylene glycols, useful as lubricant additives, are soluble with all four types of hydrocarbon base oils (Groups I-IV) at a wide variety of ratios of oil to polyalkylene glycol and under a variety of conditions. These polyalkylene glycols are prepared by reacting a C8-C20 alcohol and a mixed butylene oxide/propylene oxide feed, wherein the ratio of butylene oxide to propylene oxide ranges from 3:1 to 1:1. The invention provides a means of providing desirable lubricant compositions which may pose fewer environmental problems. | 05-03-2012 |
20120172269 | ESTOLIDE COMPOSITIONS HAVING EXCELLENT LOW TEMPERATURE PROPERTIES - A lubricant or process fluid composition having excellent low temperature properties comprises a capped estolide ester, a polyalphaolefin, a synthetic ester and/or polyalkylene glycol, and a pour point depressant. The combination of the three base oils plus the pour point depressant produces a synergistic composition that may have a pour point less than −15° C., preferably less than −35° C., while also having more than 50 percent by weight renewable carbons and being economical and effective in a wide variety of applications. | 07-05-2012 |
20130157909 | Corrosion Inhibiting Polyalkylene Glycol-Based Lubricant Compositions - Lubricant compositions including a random or block copolymer first high-EO content polyalkylene glycol, a random copolymer second polyalkylene glycol based on propylene oxide and butylene oxide or a second polyalkylene homopolymer having propylene oxide or butylenes oxide units and at least one corrosion inhibitor selected from the group of sarcosines, amine phosphates, and calcium dinonylnaphthalenesulfonate/carboxylates are provided. Lubricant compositions for extreme conditions are also provided. | 06-20-2013 |
20130288939 | NON-AROMATIC BASED ANTIOXIDANTS FOR LUBRICANTS - A lubricant composition comprises a cycloaliphatic amine alkoxylate and a base oil selected from (a) a polyalkylene glycol; (b) a polyalphaolefin; (c) a naphthenic compound; and (d) combinations thereof; provided that the cycloaliphatic amine alkoxylate and the base oil are miscible. The lubricant may exhibit a viscosity change at 40° C. of less than 5 percent (%) after 13 days at 120° C. in dry air, indicating significant thermoxidative stability with minimal or no aromatic content, thereby enabling use of Groups II and III base oils, in particular, without reduced toxicity and/or quality concerns as compared with Group I base oil lubricants. | 10-31-2013 |
20140107004 | Natural and Synthetic Ester-Containing Lubricants Having Enhanced Hydrolytic Stability - A lubricant composition comprising (a) from 0.1 to 10 percent by weight of one or more polyalkylene glycols (PAG); and (2) one or more ester base oils selected from the group of natural esters, synthetic esters and combinations thereof; wherein the one or more PAG has a molecular weight in the range 1500 to 5000 g/mole, comprises from 10 to 40 percent by weight of units derived from ethylene oxide and from 90 to 60 percent by weight of units derived from propylene oxide; and wherein the one or more PAGs are in the form of block copolymer, reverse block copolymer or combinations thereof is provided. Also provided is a method of enhancing the hydrolytic stability of an ester base oil. | 04-17-2014 |
20150141308 | Energy Efficient Polyalkylene Glycols and Lubricant Composition Containing Same - A polyalkylene glycol comprising: a random copolymer comprising units derived from EO and units derived from PO initiated with polytetrahydrofuran; wherein the polyalkylene glycol has a pour point of less than or equal to −30° C. as measured using ASTM D97 and a traction value of less than 0.0165 at a contact pressure of 1.25 GPa, speed=2 m/s, SRR of 100% and temperature of 80° C. is provided. Also provided are lubricant compositions containing such polyalkylene glycol. | 05-21-2015 |