Abstract:
A direct and/or alternating voltage is applied to a nonconductive fluid containing a boron trifluoride complex at least partly dispersed and/or dissolved therein to thereby precipitate the boron trifluoride complex, and the precipitate is separated from the nonconductive fluid. Thus, the complex can be recovered without changing the molar coordination ratio in the complex. By utilizing this method for olefin oligomer production in which a boron trifluoride complex catalyst is used, the recovered catalyst can be reused as it is for the reaction.
Abstract:
Solid acids are used as catalysts for the polymerization of a feed stream containing at least one of pure monomer, C5 monomers, and C9 monomers to produce hydrocarbon resins. Freely-associated water may be removed from the solid acid catalyst prior to use. Resins with softening points (Ring and Ball) in the range of about 5 DEG C to 170 DEG C can be prepared. These catalysts offer advantages over the traditional Friedel-Crafts polymerisation catalysts since the acid sites are an integral part of the solid. The solid acid catalysts are relatively nonhazardous, reusable catalysts which eliminate or at least reduce contamination of the resulting resin products with acid residues or by-products.
Abstract:
Catalyst composition for the oligomerization of ethylene, comprising (i) an at least partially hydrolyzed transition metal compound, obtainable by controlled addition of water to a transition metal compound having the general formula MX m (OR') 4-m or MX m (OOCR') 4-m , wherein R' is an alkyl, alkenyl, aryl, aralkyl or cycloalkyl group, X is halogen, preferably Cl or Br, and m is from 0 to 4; preferably 0-3; and (ii) an organoaluminum compound as a cocatalyst, wherein the molar ratio of water and transition metal compound is within a range of between about (0.01-3): 1; a process for oligomerization of ethylene and a method for preparing the catalyst composition.
Abstract:
The present invention relates to fully formulated lubricants comprising poly alpha-olefins (PAOs), prepared from a mixed alpha-olefin feed, which exhibit superior Noack volatility at low pour points, and methods for preparing the fully formulated lubricants. The fully formulated lubricants include PAOs that include mixtures of 1-decene and 1-dodecene. The PAOs may be prepared by polymerization/oligomerization using an alcohol promoted BF3 in conjunction with a combination of co-catalysts.
Abstract:
The present invention relates to the method for producing α-olefins by oligomerization of C2 to C4 olefins. The olefin oligomerization method is carried out in a presence of a catalytic system comprising: 1) a chromium source, 2) a nitrogen-containing ligand, 3) alkyl aluminium and optionally in the presence of a zinc compound, thereby, prior to feeding the catalytic system to the oligomerization reactor its dilution is carried out with subsequent online determination of chromium concentration in the diluted catalytic system by measuring optical density of obtained diluted solution after producing the catalytic system, and correction, if necessary, of the amount of solvent fed for diluting the catalytic system in response to performed measurement. The method in accordance with the present invention allows for significantly simplifying control of catalytic system concentration after its dilution and the amount of diluted catalytic system fed to the olefin oligomerization reactor, which, in its turn, allows for providing high selectivity and productivity of the olefin oligomerization process.
Abstract:
This invention relates to base oils for lubricating compositions. In particular, the present invention provides a process for the selective oligomerisation of C5 to C20 alpha-olefins to produce polyalphaolefin oligomers with a molecular weight distribution that is suitable for use in lubricant base oils.
Abstract:
This invention relates to base oils for lubricating compositions. In particular, the present invention provides a process for the selective oligomerisation of C 5 to C 20 alpha-olefins to produce polyalphaolefin oligomers with a molecular weight distribution that is suitable for use in lubricant base oils.
Abstract:
An alkylation process comprising contacting a first hydrocarbon feed comprising at least one olefin having from 2 to 6 carbon atoms and a second hydrocarbon feed comprising at least one isoparaffin having from 3 to 6 carbon atoms with a halide-based acidic ionic liquid catalyst under alkylation conditions to produce an alkylate containing an organic halide and contacting at least a portion of the alkylate with a hydrotreating catalyst in the presence of hydrogen under hydrotreating conditions to reduce the concentration of the organic halide is disclosed.
Abstract:
The present invention relates to fully formulated lubricants comprising poly alpha-olefins (PAOs), prepared from a mixed alpha-olefin feed, which exhibit superior Noack volatility at low pour points, and methods for preparing the fully formulated lubricants. The fully formulated lubricants include PAOs that include mixtures of 1-decene and 1-dodecene. The PAOs may be prepared by polymerization/oligomerization using an alcohol promoted BF3 in conjunction with a combination of co-catalysts.