Abstract: Novel silicon-aluminum compounds having at least two aryl-silicon bonds useful as cocatalysts for a catalyst system for polymerizing olefins.

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: A catalyst prepared by reacting a dihalide, such as MgCl.sub.2 ; a titanium compound, such as a titanium tetraalkoxide; and an electron donor to form a first catalyst component; then reacting that component with an organoaluminum halide; then reacting the resulting solid with TiCl.sub.4 ; and then reacting the solid after that step with HSiCl.sub.3. Also the use of the catalyst in olefin polymerization is disclosed.

Abstract: A catalyst and process for polymerizing olefins wherein the catalyst comprises a titanium-containing component prepared by reacting a magnesium dihalide, 4-phenyl phenol, ethyl benzoate, and titanium tetrabutoxide, and an organoaluminum halide and then reacting that product with a mixture of TiCl.sub.4, HSiCl.sub.3, and SiCl.sub.4.

Abstract: Solid olefin polymerization catalysts are prepared by forming a solution of an organophosphate or organophosphoramide and certain metal halides and then reacting the solution with a halogenated transition metal compound to form a solid.

Abstract: A process for producing a novel highly active vanadium catalyst comprising a particulate solid produced by reacting a vanadium compound, a phosphorus compound, and an organoaluminum compound and its use in the polymerization of 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: A polymerization process wherein a slurry of polymer and diluent is passed from the polymerization zone to a flash zone, then polymer solids having residual diluent carried thereon are passed to a purge zone wherein a heated noncombustible gas is used to remove additional amounts of diluent, and then the vapor purge zone is condensed and cooled to produce a vapor stream comprising said noncombustible gas and a liquid stream comprising diluent.

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 olefin disproportionation catalyst produced by contacting an inorganic refractory oxide containing a catalytic amount of tungsten oxide or molybdenum oxide with a promoting amount of at least one elemental metal selected from zinc and manganese.

Abstract: Novel catalysts are disclosed for the selective dehydration of 2-alcohols to .alpha.-olefins. In one case, the catalyst comprises at least one catalytic metal oxide on a low surface area aluminum oxide-containing support. In another case, the catalyst comprises a mixture of thorium oxide and cerium oxide on a base treated aluminum oxide containing support. There is also disclosed a novel process for obtaining high purity 4-methyl-1-pentene involving the dehydration of 4-methyl-2-pentanol followed by disproportionation with ethylene.

Abstract: A novel cracking catalyst, a method of preparing same and an improved hydrocarbon cracking process are provided wherein adverse effects of metals such as nickel, vanadium, iron, copper and cobalt in the cracking catalyst are precluded or mitigated by contacting the cracking catalyst with (A) at least one of elemental antimony and compounds thereof and (B) at least one of element tin and compounds thereof whereby there is added to said catalyst a modifying amount of each of (A) and (B) with the weight ratio of antimony to tin being such as to provide passivation of the contaminating metals greater than the sum of the passivatiion effects of each of (A) and (B) individually. In general the ratio will be in the range of from 0.001:1 to 1000:1, and preferably will be in the range of 0.05:1 to 50:1.

Abstract: A catalyst and process for the selective hydrogenation of acetylene, said catalyst comprising palladium and silver with the palladium concentrated as a skin and the silver distributed throughout.

Abstract: A process for the disproportionation of olefins involving the use of a catalyst comprising rhenium oxide and thorium phosphate and oxygen in the feed.

Abstract: A catalyst and process for polymerizing olefins wherein the catalyst comprises a titanium-containing component prepared by reacting a magnesium dihalide, 4-phenyl phenol, ethyl benzoate, and titanium tetrabutoxide, and an organoaluminum halide and then reacting that product with a mixture of TiCl.sub.4, HSiCl.sub.3, and SiCl.sub.4.

Abstract: A process for cracking a feed comprising at least one alkane involving contacting said feed with H.sub.2 S and a high surface area contact material under cracking conditions.