Abstract: Methods are provided for qualifying jet fuel fractions that are derived at least in part from pre-refined crude oil sources. The methods allow for determination of the stability of a jet fuel product over time by using an accelerated aging test. The methods are beneficial for verifying the stability of a jet fuel fraction that includes a portion derived from a pre-refined crude oil.

Abstract: Methods are provided for qualifying jet fuel fractions that are derived at least in part from pre-refined crude oil sources. The methods allow for determination of the stability of a jet fuel product over time by using an accelerated aging test. The methods are beneficial for verifying the stability of a jet fuel fraction that includes a portion derived from a pre-refined crude oil.

Abstract: Methods are provided for qualifying jet fuel fractions that are derived at least in part from pre-refined crude oil sources. The methods allow for determination of the stability of a jet fuel product over time by using an accelerated aging test. The methods are beneficial for verifying the stability of a jet fuel fraction that includes a portion derived from a pre-refined crude oil.

Abstract: Methods are provided for characterizing an aviation gasoline for use in a spark-ignited engine based on analysis methods traditionally used for compression-ignition fuels. For example, an aviation gasoline can be characterized based on a combustion delay for the aviation gasoline, a heat release rate for the aviation gasoline, or a combination thereof. Analyzing an aviation gasoline based on characteristics traditionally used for compression-ignition fuels can allow for distinction between types of aviation gasolines that may appear to be similar under conventional octane tests but that have substantially different performance characteristics.

Abstract: Systems and methods are provided for characterizing kerosene fractions in order to determine whether the fractions will satisfy a desired thermal breakpoint specification. Additionally, hydrotreating conditions can be determined that will result in a hydrotreated kerosene fraction that satisfies the desired thermal breakpoint specification. The hydrotreating conditions can be determined based on a model constructed from data corresponding to a plurality of reference samples. The model can include data for compositional groups within the reference samples. The data for compositional groups can be derived from Fourier transform ion cyclotron resonance mass spectrometry data or from another suitable characterization technique.

Abstract: The present invention describes a method of making a jet fuel composition comprising: providing a mineral-based kero/jet-type distillate component having certain enumerated physico-chemical properties, typically an off-spec jet fuel; providing a deoxygenated and dewaxed renewable component derived from triglycerides and/or fatty acids and having an isoparaffin to normal paraffin ratio from about 2:1 to about 6:1 and an aromatics content less than about 1 vol %; and blending from about 75 vol % to about 97 vol % of the mineral-based distillate components with from about 3 vol % to about 25 vol % of the renewable component to form an on-spec blended jet fuel composition.

Abstract: Methods are provided for qualifying jet fuel fractions that are derived at least in part from pre-refined crude oil sources. The methods allow for determination of the stability of a jet fuel product over time by using an accelerated aging test. The methods are beneficial for verifying the stability of a jet fuel fraction that includes a portion derived from a pre-refined crude oil.

Abstract: The addition of biodiesel to petroleum-based kerosene jet fuels in very low concentrations can lower the temperature at which crystals appear in the fuel. The fuels can comprise a blend of a hydrocarbon base fuel component and, for example, up to 1000 ppm, v/v of the total fuel, of a biodiesel component comprising a lower alkyl ester of a fatty acid of natural origin having from 8 to 24 carbon atoms; these blends can be characterized by improved low temperature flow properties, especially of Cloud Point (ASTM D 2500), which can be lower than that of the petroleum fuel component without the alkyl ester, even in the presence of dissolved water up to the saturation level.

Abstract: Aromatic amines of the formula ##STR1## where R.sub.1 is C.sub.1 -C.sub.10 alkyl or halogen and n is an integer from 0 to 3 are effective in increasing the motor octane number of aviation gasolines to 98 or greater without the presence of lead additives.

Abstract: Melt stable polymeric resins are provided by process which comprises heating a first particulate resin selected from the group consisting of poly(arylene sulfide ketone) and poly(arylene sulfide diketone), while in the presence of a gaseous oxidizing atmosphere, to a temperature at least about 150.degree. C. (302.degree. F.) but below the melting point of the first particulate resins, for time sufficient to produce a second particulate resin. The thermal stability of the second particulate resin is superior to that of its respective first particulate resin is superior to that of its respective first particulate resin. Moreover, the molecular weight of the second particulate resin is greater than that of its respective first particulate resin.

Abstract: A process for the catalytic self-condensation of halothiophenol to form a poly(arylene sulfide) is disclosed. The reaction mixture includes an alcohol solvent, the halothiophenol, an alkaline reagent and a catalyst comprising a Group VIII metal. The polymerization process can be carried out at pressures as low as 1 atmosphere and temperatures of 200.degree. C. or less.

Abstract: A process to form a fiber-reinforced composite having a continuous thermoplastic matrix of poly(arylene sulfide ketone) resins is provided. The composite is useful to form shaped articles with high temperature resistance. The composite can be prepared by consolidating under heating a multi-layer stack of resin sheets and fiber reinforcement sheets. The poly(arylene sulfide ketone) resins can be melt-stabilized through treatment with a water-soluble salt of an alkaline earth metal. The composite has excellent thermal properties such as heat distortion temperature.

Abstract: A process, and product produced therefrom, for preparing a high molecular weight poly(arylene sulfide ketone) from the reaction product of an alkali metal bisulfide with an alkali metal hydroxide, employing molar excess of alkali metal bisulfide with respect to the alkali metal hydroxide. A process, and product produced therefrom, for preparing a high molecular weight poly(arylene sulfide ketone) employing an alkali metal sulfide and an alkali metal hydrosulfide, wherein the alkali metal sulfide is added in a molar excess with respect to the alkali metal hydrosulfide.

Abstract: EMI shielded stampable sheet contains two fiber mats, one of which provides primarily reinforcing function, the other of which provides primarily EMI shielding function.

Abstract: The purification of bis(4-hydroxycyclohexyl) alkane, particularly hydrogenated bisphenol A (HBPA) is carried out via recrystallization from at least one halogen-containing solvent solution.

Abstract: A process, and product produced therefrom, for preparing a high molecular weight poly(arylene sulfide ketone) from the reaction product of an alkali metal bisulfide with an alkali metal hydroxide, employing molar excess of alkali metal bisulfide with respect to the alkali metal hydroxide. A process, and product produced therefrom, for preparing a high molecular weight poly(arylene sulfide ketone) employing an alkali metal sulfide and an alkali metal hydrosulfide, wherein the alkali metal .[.sulfide.]. .Iadd.hydrosulfide .Iaddend.is added in a molar excess with respect to the alkali metal .[.hydrosulfide.]. .Iadd.sulfide.Iaddend..