Abstract: Oil-soluble or oil-dispersible trinuclear molybdenum-sulfur compounds are made by reacting less than three, such as 1.5 to 2.5, preferably two to 2.1, molar equivalents of a disulfide with one molar equivalent of a compound containing the [Mo.sub.3 S.sub.13 ].sup.2- ion. The trinuclear compounds include S-containing ligands that are derived from the disulfide reactant via cleavage of the disulfide bond; the ligands are bound to the core via the S atoms.

Abstract: A polymer film comprising at least first and second contiguous and coextruded portions, wherein the first portion is extruded from a first polymer composition containing a filler material in an amount sufficient to increase the water vapor permeability of the first portion relative to the second portion, and the second portion is extruded from a second polymer composition such that a tensile strength of the second portion is greater than the tensile strength of the first portion. Such polymer films allow for highly vapor permeability, while providing portions with sufficient strength to allow for taping or attachment of fastening devices.

Abstract: Specific polymers of ethylene and different unsaturated esters provide oils with improved low temperature flow properties.

Abstract: Process flow sequences for the reduction of equipment fouling in the fractional distillation of light end hydrocarbon components, such as those produced by pyrolysis or steam cracking, wherein conventional multiple hydrogenation unit configurations are replaced with upstream hydrogenation unit configurations. The upstream hydrogenation units of the invention are located at either side draws or in the reboiler circuit of deethanizers, in front-end demethanizer and front-end deethanizer sequences, or depropanizers, in front-end depropanizer sequences and obviate the need for most of the conventionally used hydrogenation units downstream.

Abstract: A propene ether is selectively oxidized to an aldehyde-masked 2-hydroxypropanal using a metal-containing oxidation catalyst.

Abstract: Melt processed linear polyethylenes are shown to exhibit improved processability through the addition of certain surfactants. Among the melt processing parameters improved are reduced head pressure, reduced torque, reduced motor load, reduced or eliminated melt fracture, or combinations of these parameters. The surfactants can be chosen from a non-aromatic alkyl sulfonate or sulfate salt wherein a cation of the salt is selected from the group consisting of Na, K, Li, and other alkali cations and a quaternary ammonium cations, said surfactant being essentially free of halogens.

Abstract: An improved polybutene-free lubricant composition for marine diesel engines, comprising a major amount of oil of lubricating viscosity and, provided by admixing therewith, minor amounts of a) at least one of a borated dispersant or oil-soluble or oil-dispersible boron compound; and b) one or more overbased metal compounds the or each compound having a TBN of at least 300, with the proviso that if an overbased metal salicylate is present then the TBN of said salicylate is at least 200; wherein the TBN of the composition is at least 10 and the viscosity index of the composition is at least 90.

Abstract: A copolymer comprising units of an unsaturated dicarboxylic monomer and an ethylene .alpha.-olefin macromer is disclosed. The macromer is an unsaturated ethylene .alpha.-olefin polymer comprising units of from ethylene and at least one .alpha.-olefin represented by the formula CH.sub.2 .dbd.CHR.sup.a, wherein R.sup.a is a C.sub.1 to C.sub.18 linear alkyl group or a C.sub.3 to C.sub.18 branched alkyl group; the ethylene .alpha.-olefin polymer has a number average molecular weight of from about 500 to about 100,000; and at least about 30% of the unsaturation in the ethylene .alpha.-olefin polymer is terminal vinylidene. The copolymer has a carbon-carbon backbone and contains succinic groups and hydrocarbyl groups. The copolymer can be derivatized by reaction with nucleophilic reactants including monoamines, polyamines, monoalcohols, polyols, amino alcohols, reactant metal compounds and mixtures thereof. The derivatized copolymers can be post-treated (e.g., borated) with one or more post-treating agents (e.g.

Abstract: The described invention provides a low fouling, high particle density polymerization process and an olefin polymerization catalyst composition comprising the reaction product of a) an organic polymeric support i) having a surface area of from about 1 to 10 m.sup.2 /g and ii) functionalized with an acidic proton-containing ammonium salt of a non-coordinating anion, and b) an organometallic transition metal compound having ancillary ligands, at least one labile ligand capable of abstraction by protonation by said ammonium salt and at least one labile ligand into which an olefinic monomer can insert for polymerization. In a preferred embodiment, the polymeric support has a surface area of .ltoreq.10 m.sup.2 /g and is particularly suitable for use with high activity organometallic, transition metal catalyst compounds.

Abstract: A process for preparing substantially random olefin copolymers containing geminally disubstituted olefin monomers is described. The geminally disubstituted olefin monomers can be represented by the generic formula R.sub.1 =R.sub.2 (R.sub.3)(R.sub.4), where R.sub.1 is CH.sub.2, R.sub.2 is C, and R.sub.3 and R.sub.4 are, independently, essentially linear hydrocarbyl groups having from 1 to 30 carbon atoms, or more, and containing one carbon atom bound directly to R.sub.2. The copolymers can be prepared by contacting at least one geminally disubstituted olefin monomer and one or more comonomers selected from the group consisting of ethylene and C.sub.3 -C.sub.20 .alpha.-olefins, optionally with one or more other coordination polymerizable monomers, with a active coordination catalyst system comprising a bridged bis(arylamido) Group 4 catalyst component.

Abstract: A process is disclosed for converting dicyclopentadiene to cyclopentane and/or cyclopentene, wherein dicyclopentadiene is fed to a catalytic distillation column, the dicyclopentadiene is cracked to cyclopentadiene in the catalytic distillation column, the cyclopentadiene is hydrogenated to cyclopentane in the catalytic distillation column, and the cyclopentane is recovered from the catalytic distillation column. The dicyclopentadiene is fed into and cracked to cyclopentadiene at the bottom of the catalytic distillation column. Hydrogen is then fed to the catalytic distillation column below the catalytic zone, where cyclopentadiene is hydrogenated as it is produced, thus suppressing polymerization of the cyclopentadiene. The resulting cyclopentane and/or cyclopentene vapor phase stream is condensed, thereby producing a liquid stream of cyclopentane and/or cyclopentene and a vapor stream of hydrogen and other off-gas by-products.

Abstract: The lubricity of low sulphur fuels is enhanced by incorporation of a cold flow improver.

Abstract: A film having a polypropylene surface layer and a polyethylene surface layer is used in fill and seal packaging applications, in which the polyethylene layer consists essentially of a ethylene copolymer having a narrow molecular weight distribution ethylene and a CBDI of greater than 50%. The package is formed by heat sealing the polyethylene surface to the polypropylene surface of the film to form a transverse seal.

Abstract: The present invention relates to a method for using a single distillation column to recover the reactants and products from the reaction of a cyclic diolefin and an olefin to produce an alkenyl bridged ring compound.

Abstract: The invention provides a process for improving the conversion of a hydrocarbon feedstock to light olefins comprising mixing a hydrocarbon feedstock with a diolefin to form a mixture; and thereafter contacting the mixture with a zeolite cracking catalyst. Preferably the catalyst is contacted at a reaction temperature within the range of about 500.degree. C. to about 750.degree. C. and the feedstock flows at a weight hourly space velocity in the range of about 0.1 Hr.sup.-1 WHSV to about 100 Hr.sup.-1 WHSV. The diolefin can be a straight, branched, or cyclic hydrocarbon having at least two II bonds. Preferably diolefin is a hydrocarbon of 4 to 20 carbons.

Abstract: Esters of branched C.sub.9 alcohols suitable as plasticizers are formed by esterification of a C.sub.9 alcohol produced by the aldol condensation from propanal and a C.sub.6 aldehyde and hydrogenation, the propanal optionally having been made from natural gas streams.

Abstract: This invention relates generally to supported metallocene catalyst systems and to methods for their production which comprising combining inorganic porous support material having an average particle size of from about 30.mu. to about 40.mu., metallocene, and alumoxane wherein the amount of metallocene is in the range of 0.005 to 0.06 mmoles transition metal/g support material and the ratio of aluminum to transition metal is in the range of 10:1 to 300:1. Specifically, this invention relates to supported metallocene catalyst systems having improved metallocene loading and optionally reduced support particle size. These catalyst systems are particularly useful for the polymerization of ethylene polymers.

Abstract: The present invention is directed to a polymeric vehicle, a formulated coating composition and a coating binder made from the polymeric vehicle and a method for making the polymeric vehicle where the polymeric vehicle includes a polyol, an isocyanate compound and a phenolic ester alcohol having at least one aliphatic hydroxyl group and at least one phenolic hydroxyl group.

Abstract: This invention is generally directed toward a supported catalyst system useful for polymerizing olefins. The method for supporting the catalyst system of the invention provides for a metallocene catalyst and alumoxane activator supported on a porous support using a total volume of catalyst solution that is less than that of which a slurry is formed. The metallocene and alumoxane aer mixed in solution, then the solution is added to a porous support in a volume between the total pore volume of the support and the volume at which a slurry forms. The solvent is then removed, leaving an activated supported metallocene.

Abstract: To improve color and odor characteristics of sulfonic acids and their derivatives while maintaining sludge and sulfuric acid reduction and good thermal stability, they are treated with at least one unsaturated hydrocarbon, each having at most 36 carbon atoms and having defined substitution characteristics.