Abstract: A transformer oil basestock is disclosed that includes at least 99 wt % of naphthenes and paraffins, based on the total weight of the transformer oil basestock, wherein the weight ratio of naphthenes to paraffins is at least 1, as measured by GC-MS, and wherein the paraffins consist essentially of isoparaffins, as determined by GC-FID. In addition, a transformer oil composition is disclosed that includes the transformer oil basestock, an anti-gassing agent and an antioxidant.

Abstract: The invention provides a hydraulic fluid composition comprising a hydrocarbon component comprising more than 5 wt % of naphthenic oil and up to 95 wt % of renewable or recycled isoparaffinic oil, based on the total weight of the composition. The hydraulic fluid composition is useful as an arctic hydraulic fluid composition, shock absorber or automatic transmission fluid.

Abstract: The present invention provides an electrical insulating oil composition that can maintain breakdown voltage at a high level in a wide temperature range of ?50° C. to 30° C., extremely unlikely precipitates as crystals in particular at ?50° C., and has excellent properties both at ordinary temperature and low temperature. The insulating oil composition comprises diarylalkanes having 14 carbon atoms (C14) and having 15 carbon atoms (C15), wherein the C14 diarylalkane is 1,1-diphenylethane or a mixture of 1,1-diphenylethane and benzyltoluene and the C15 diarylalkane is 1-phenyl-1-methylphenylethane.

Abstract: Base oil formulation containing (i) a Fischer-Tropsch derived light base oil and (ii) a Fischer-Tropsch derived gas oil. The formulation can be prepared by back-blending a Fischer-Tropsch derived light base oil with a Fischer-Tropsch derived gas oil, for instance derived from the same Fischer-Tropsch synthesis. Also provided is the use of a Fischer-Tropsch derived gas oil in a base oil formulation containing a Fischer-Tropsch derived light base oil, for the purpose of improving the cold flow properties of the formulation while maintaining its flash point above a desired target value, and/or for the purpose of reducing the concentration of a cold flow additive in the formulation, preferably with less of a reduction in the flash point of the formulation than theory would have predicted to occur due to the incorporation of the Fischer-Tropsch derived gas oil.

Abstract: A process for purifying monoterpenes, including the steps of: providing a monoterpene comprising alpha terpinene of about 90% or greater purity and comprising an oxygen-containing impurity compound selected from the group consisting of 1,8-cineole, 1,4,-cineole, and mixtures thereof; providing an activated silica gel preparative chromatographic column; contacting the monoterpene with the column, wherein the oxygen-containing impurity compounds are retained on the column; recovering monterpenes depleted of oxygen-containing impurity compounds from the column by applying a pressure above atmospheric from a gas source without the use of a solvent; and removing the oxygen-containing impurity compounds by contacting the column with an alcohol.

Abstract: The invention provides for a mineral insulating oil having a naphthenic base oil and a paraffinic base oil wherein the naphthenic base oil includes a ratio of total sulfur to basic nitrogen of less than about 80:1. The invention also provides for a mineral insulating oil having a naphthenic base oil, a paraffinic base oil, and an antioxidant agent wherein the naphthenic base oil includes a ratio of total sulfur to basic nitrogen of less than about 80:1. The invention also provides for a process for producing a mineral insulating oil including contacting a naphthenic base oil and a paraffinic base oil wherein the naphthenic base oil includes a ratio of total sulfur to basic nitrogen of less than about 80:1. The invention also provides for a process for producing a mineral insulating oil including contacting a naphthenic base oil, a paraffinic base oil, and an antioxidant agent wherein the naphthenic base oil includes a ratio of total sulfur to basic nitrogen of less than about 80:1.

Abstract: An uninhibited electrical insulating oil is prepared by blending a severely hydrotreated naphthenic distillate base oil having a viscosity of from about 50 to about 80 SSU at 38° C. and an aniline point from about 63° to about 84° C. with a solvent extracted, non-hydrogenated paraffinic distillate having at least 9.0 wt. % aromatic content.

Abstract: The present invention deals with the catalytic hydrogenation of fluid used to cool and dielectrically insulate an x-ray generating device within an x-ray system. According to the present invention, a method and apparatus are provided for hydrogenating fluid that has been exposed to x-rays to reduce the amount of H2 gas, free hydrogen atoms and unsaturated molecules in the fluid. The method comprises exposing the fluid within the x-ray system to a catalytically effective amount of catalyst. The catalyst operates in temperatures in the range of about 10-300° C. and pressures in the range of about 0.1-30 atmospheres. The catalyst may comprise a solid, non-soluble catalyst, a soluble catalyst, or a combination of both. A suitable solid, non-soluble catalyst comprises Group VIII elements and their compounds. Group VIII elements comprise iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium and platinum.

Abstract: Electrical oils having improved uninhibited oxidation and electrical resistance are derived by blending a substantially nitrogen and sulfur free paraffinic or naphthenic base oil with a hydrofined light gas oil having a sulfur to nitrogen weight ratio of greater than 100:1 wherein the hydrofined light gas oil is added to the base oil in an amount sufficient to provide a blend having greater than about 0.03 wt % sulfur.

Abstract: A high temperature heat transfer fluid is disclosed which comprises a mixture of 1,2,3,4-tetrahydro(1-phenylethyl)naphthalene and an alkyl biphenyl to provide high temperature heat transfer fluids exhibiting favorable thermal stability.

Abstract: A high temperature heat transfer fluid is disclosed which comprises a mixture of 1,2,3,4-tetrahydro(1-phenylethyl)naphthalene and dibenzyl toluene to provide high temperature heat transfer fluids exhibiting favorable thermal stability.

Abstract: Sealing body for a discharge lamp which consists of a functional gradient material in which one side is rich in dielectric component and the other side is rich in electrically conductive component, and which is sealed by a side tube which is connected to the arc tube of the discharge lamp and by its areas which are rich in a dielectric component, characterized in that in this sealing body an upholding part of an electrode with a tip provided with an electrode is shrink-fitted, and that furthermore on the outer peripheral surfaces of the areas of the sealing body which are rich in dielectric component, surfaces are formed which run obliquely with respect to the center axis of the above described discharge lamp so that the maximum width of the end face of the sealing body on the side of the emission space becomes smaller than the maximum width in one direction perpendicular to the axis of the sealing body and becomes greater than the diameter of the upholding part of the electrode.