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| Number | Title | Issue Date |
| 7119153 | Dual metallocene catalyst for producing film resins with good machine direction (MD) elmendorf tear strength This invention relates to catalyst compositions comprising a first metallocene compound, a second metallocene compound, at least one chemically-treated solid oxide, and at least one organoaluminum compound. This invention also relates to methods to prepare and use t... | 10/10/2006 |
| 6683018 | Method for producing a supported catalyst system A process for the preparation of a supported catalyst system, an inorganic carrier material being reacted with a metal compound of the formula in the presence of an inert solvent in a first step and, in a subsequent step, the suspension thus obtained being rea... | 01/27/2004 |
| 6528596 | Modified particles, catalyst for olefin polymerization, and process of producing olefin polymer A modified particles obtained by contacting particles(a) with a metal compound(b) selected from the group consisting of compounds of the Group VI, VII, XIV metal elements and compounds of the lanthanide series, and contacting the particles with a compound... | 03/04/2003 |
| 6407027 | Catalyst composition and method for producing diaryl carbonates, using bisphosphines Hydroxyaromatic compounds such as phenol are carbonylated with oxygen and carbon monoxide in the presence of a catalyst system comprising a Group VIII metal, preferably palladium; at least one bromide or chloride salt, preferably sodium bromide or a tetra... | 06/18/2002 |
| 6346499 | Catalyst composition for producing diaryl carbonates using carboxylic acid amide as promoter Hydroxyaromatic compounds such as phenol are carbonylated with oxygen and carbon monoxide in the presence of a catalyst system comprising a metal from Groups 8-10 of the Periodic Table having an atomic number of at least 44, preferably palladium; an alkal... | 02/12/2002 |
| 5962361 | Methods of making and using catalyst precursor A method of making a solid, substantially dry olefin polymerization procatalyst precursor is disclosed whereby a solid precursor containing magnesium and titanium is formed in a slurry or solution, the solid then is separated from the solution and then dr... | 10/05/1999 |
| 5376612 | Chromium catalysts and process for making chromium catalysts Novel chromium-containing compounds, such as, for example, chromium pyrrolides, are prepared by forming a mixture of a chromium salt, a metal amide, and an electron pair donor solvent, such as, for example, an ether. These novel chromium-containing, or ch... | 12/27/1994 |
| 4678768 | Catalyst component for polymerization of olefins A catalyst component for polymerization of olefins which is prepared by contacting a product obtained by contacting (A) a magnesium alkoxide, (B) a silicon compound having the hydrogen-silicon bond, and (C) a titanium compound with one another, with (D) (... | 07/07/1987 |
| 4314911 | Polymerization catalyst New, highly active catalysts for the polymerization of ethylene and mixtures of ethylene with higher alpha-olefins and/or diolefins, are disclosed. The catalysts are prepared by mixing (a) hydrides or organometallic compounds of metals belonging to Groups... | 02/09/1982 |
| 4103078 | Method for producing polymers of alpha-olefin Polymers of -olefin such as polyethylene, polypropylene, copolymers of ethylene with propylene, butene-1 or styrene, are produced by the (co-) polymerization using a catalyst obtained by mill-mixing an oxide of a metal belonging to I, II, III, VII ... | 07/25/1978 |
| 4027087 | Method for producing ethylene polymers Ethylene can be polymerized or copolymerized by the use of a catalyst prepared by mixing a trivalent metal halide with a metal carbonate or/and a metal hydrogen carbonate, reacting the resulting mixture with a transition metal compound in the presence of ... | 05/31/1977 |
