Abstract: This invention relates to a new catalyst for converting hydrocarbons. The catalyst comprises a platinum group component, a Group IVA component, especially tin, an alkali or alkaline earth component, more than 0.2 weight %, calculated on an elemental basis, of a halogen component and a porous carrier material, wherein the atomic ratio of the alkali or alkaline earth component to the platinum group component is more than 10. The catalyst is particularly useful for dehydrogenating paraffins having from 2 to 5 or more carbon atoms to the corresponding mono-olefins, or for dehydrogenating mono-olefins having from 3 to 5 or more carbon atoms to the corresponding di-olefins.

Abstract: An olefin polymerization catalyst prepared by reacting water with a magnesium dihalide in the presence of a phase transfer catalyst and reacting the resulting hydrated magnesium dihalide with reactants including a benzoic acid ester, an alkoxytitanium compound, an organoaluminum halide and a titanium halide.

Abstract: This invention provides a catalyst composition which is a solvent solution of halide-free complex of palladium compound and tertiary phosphine or phosphite ligand which is stabilized with a hindered thiol compound. The catalyst is adapted for hydroesterification of an alpha-olefin with carbon monoxide and hindered thiol compound.

Abstract: A catalyst and initiator composition for lactam polymerization is composed of a Grignard catalyst for lactam polymerization and initiator system containing(a) at least one material represented by the following structural formula: ##STR1## (b) at least one material represented by the following structural formula: ##STR2## wherein q and v are independently an integer of at least 1; Z and W are independently selected from a compound or polymeric material, said compound being composed of at least two elements in chemical combination which contain up to two repeating structural units, said polymeric material being a macromolecule formed by the chemical union of at least two coreactants and having at least three repeating structural units; with the proviso that at least a portion of either or both of the materials (a) or (b) is a polymeric material. In the above formulas, R, R', R", R'" are independently hydrogen, a C.sub.1 to C.sub.10 aliphatic radical, C.sub.3 to C.sub.10 cycloaliphatic radical, C.sub.6 to C.sub.

Abstract: Generally, linear polyethylene containing long chain branching is obtained by polymerizing ethylene in the presence of a catalyst comprising a transition metal compound such as titanium chloride, an organoaluminum compound represented by the formula R.sub.1 R.sub.2 AlR.sub.p wherein R.sub.1 & R.sub.2 are the same or different hydrocarbyl groups having from 1 to 18 carbon atoms and R.sub.p is a polymeric hydrocarbyl group containing long chain branching and an aluminum alkyl cocatalyst.

Abstract: An improved titanium catalyst is produced by contacting a titanium tetrahalide such as TiCl.sub.4 with a catalyst precursor prepared by reacting a treating compound selected from mercaptans and tin hydroxides with an organometal such as a dialkyl magnesium compound. The resulting catalyst can either be supported or unsupported and it has been found to give high productivity and good particle size control in the production of olefin polymer such as polyethylene and also found to give a broad spectrum of molecular weight polymers including polymers having ultra high molecular weight and also narrow distribution polymers particularly suited for injection molding.

Abstract: An olefin polymerization and interpolymerization catalyst composition prepared by reacting novel magnesium silylamide compounds with at least one compound of a transition metal selected from Groups IIIB, IVB, VB and VIB of the fourth and fifth periods of the periodic table, and Groups VIIB and VIIIB of the fourth period.

Abstract: Using a buffered acid catalyst, a cross-linked urea-formaldehyde polymer matrix is formed by catalyzing an aqueous mixture of an urea-formaldehyde concentrate, urea-formaldehyde resin, and powdered urea. The resulting thermoset polymer which possesses, in part, a cyclic structure, is of unusual hardness and has utility, with or without fillers, as a molding or casting material possessing controllable shrinkage characteristics because of uniform molecular structure and formula versatility. The catalyst system may be used for the polymerization or cure of other urea-formaldehyde or polymeric condensation systems.

Abstract: A highly active and stereoselective olefin polymerization catalyst component is obtained by halogenating a magnesium compound of the formula MgR'R" wherein R' is an alkoxide or aryloxide group and R" is an alkoxide or aryloxide group or halogen, with a halide of tetravalent titanium in the presence of a halohydrocarbon, and contacting the halogenated product with thionyl chloride and a tetravalent titanium compound.

Abstract: A solid catalyst component for olefin polymerization comprising a hydrocarbon-insoluble product (III) obtained by reacting(A) a silicon compound selected from the group consisting of(1) halogen-containing silicon compounds,(2) silicon compounds having a monomeric unit ##STR1## (wherein R.sup.1 and R.sup.2 may be the same or different, R.sup.1 represents an alkyl, aryl, cycloalkyl, alkoxy, or aryloxy group, or a hydrogen atom, and R.sup.2 represents an alkyl, aryl, or cycloalkyl group or a hydrogen or halogen atom) and a polymerization degree of 2 to 10,000,(3) silanols of the general formula R.sub.l.sup.3 Si(OH).sub.4-l (wherein R.sup.3 represents an alkyl, aryl, or cycloalkyl group or a hydrogen atom, and l is 1, 2 or 3) or condensation products thereof,(4) silicon compounds represented by the general formula R.sub.m.sup.4 Si(OR.sup.5).sub.4-m (wherein R.sup.4 represents n alkyl, aryl, cycloalkyl, or alkenyl group or a hydrogen atom, R.sup.

Abstract: The present invention relates to catalysts for the polymerization and copolymerization of ethylene, characterized in that they comprise a support based on magnesium chloride and possibly on aluminium chloride, of spheroidal shape, having a mean diameter by mass comprised between 10 and 100 microns and with a narrow particle size distribution, such that the ratio of the mean diameter by mass to the mean diameter by number is less than or equal to 3, on which support there has been precipitated a derivative of a transition metal of groups IV, V and VI of the Periodic Table of Elements, and a polymerization process utilizing the said catalysts.

Abstract: A catalyst for polymerizing olefins is the reaction product of (A) the reaction product of (1) the reaction product of (a) an alkyl magnesium compound such as dibutylmagnesium, with (b) an oxygen-containing and/or nitrogen-containing compound such as n-propyl alcohol, or isopropylamine, with (2) a halide source such as titanium tetrachloride or silicon tetrachloride; and (B) a transition metal compound such as titanium tetrachloride and (C) a reducing agent such as triisobutylaluminum.Also disclosed is a non-transition metal containing catalyst support for use in preparing olefin polymerization catalysts.The polymers which are produced in the presence of this catalyst and a cocatalyst such as triethylaluminum have a low catalyst support to transition metal ratio and therefore, the catalyst efficiency based on quantity of polymer per quantity of total catalyst is very high resulting in a polymer having good color and very little, if any, corrosion.

Abstract: Compositions exhibiting high catalytic activity in the polymerization of .alpha.-olefins are prepared by reacting a mixture of a tetrahydrocarbyloxy titanium compound such as tetraisopropyl titanate and/or a titanium tetrahalide such as titanium tetrachloride and a titaniumoxydihalide such as titaniumoxydichloride, an organomagnesium component such as a hydrocarbon soluble complex of dialkyl magnesium and an organoaluminum compound such as triethyl aluminum and a halide source such as ethyl aluminum dichloride. Polymerization processes employing this catalyst composition do not require conventional catalyst removal steps in order to provide polymers having suitable color and other physical characteristics and these catalysts provide higher efficiencies and a broader molecular weight distribution than those catalysts employing either of the titanium compounds alone.

Abstract: An improved Ziegler/Natta catalyst for the polymerization of .alpha.-olefins containing from 2 to 30 carbon atoms, comprising titanium halide and organoaluminum cocatalyst modified by addition of ketones and monoethers. Metal halides can be used to further modify the catalyst.

Abstract: A method is provided for the production of ultrahigh molecular weight drag reducing substances and the like comprising:(a) preparing under an inert atmosphere a catalyst comprising:(1) titanium halide of the general formula TiX.sub.m wherein m=2.5 to 4.0;(2) a co-catalyst such as an organo-aluminum halide of the formula AlR.sub.n X.sub.3-n where r is a hydrocarbon radical, X is a halogen and n is 2 or 3;(3) a phosphorous compound of the formula PR.sub.1 R.sub.2 R.sub.3 or P(OR.sub.1)(OR.sub.2)(OR.sub.3) where R.sub.1, R.sub.2, and R.sub.3 are, independently, aryl, alkyl, aralkyl, or alkaryl, containing from 1 to 12 carbon atoms and placing the catalyst in contact with;(b) alpha-monoolefinic hydrocarbons from C.sub.2 -C.sub.30 under suitable temperature conditions to provide a hydrocarbon soluble ultrahigh molecular weight polymer, then ceasing polymerization at a polymer content level of 20% by weight or less, based on the total reaction mixture.

Abstract: A catalyst and its method of preparation and use involving reacting a magnesium dihalide, an alkoxytitanium compound and water, followed by reaction with an organoaluminum compound and then with a halide ion exchanging source.

Abstract: An improved method is disclosed for improving the selectivity of supported silver catalysts by incorporating a promoter therein. The improvement comprises forming a solution of a compound of the promoter and an anion which is not a catalyst poison and is selected from the group consisting of unsaturated carboxylic acids, aminoorganic acids, and hydroxybenzoic acids in a solvent and contacting the catalyst with the solution.

Abstract: The present invention relates to catalyst supports for the polymerization and co-polymerization of alpha-olefins, especially ethylene and propylene, consisting essentially of magnesium chloride, characterized in that these supports occur in the form of spheroidal particles with a mean particle size by mass comprised between 10 and 100 microns and having a narrow particle size distribution, which can be controlled, such that the ratio of the mean diameter by mass to the mean diameter by number of the particles is less than or equal to 3.0, and the process for the preparation of the said supports.

Abstract: A novel ethylene dimerization catalyst is provided consisting essentially of a nickel compound, a phosphine compound, and an acidic compound. In addition, an improved ethylene dimerization process is provided which comprises contacting ethylene with the novel catalyst composition present, in an effective solvent, at a temperature from about 0.degree. C. to about 200.degree. C. As a result of the inventive process, high catalyst productivity and good selectivity to the desired dimerized product, 1-butene, is obtained.

Abstract: The present invention relates to catalyst supports for the polymerization and co-polymerization of alpha-olefins, especially ethylene and propylene, consisting essentially of magnesium chloride, characterized in that these supports contain a chlorinated compound of aluminium in a quantity such that the atomic ratio of Al/Mg is comprised between 0.001 and 0.1 and that they occur in the form of spheroidal particles having a mean diameter by mass comprised between 10 and 100 microns and a narrow and controllable particle size distribution such that the ratio of the mean diameter by mass to the mean diameter by number of particles is less than or equal to 3, and also a process for the preparation of these supports.