Patents by Inventor Bernd Peifer
Bernd Peifer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6372930Abstract: Polymeric ligands, polymeric metallocenes, and processes for preparing same are provided. The process for preparing polymeric metallocenes comprises reacting a polymeric ligand, a transition metal compound, and an alkali metal compound. In one embodiment, a process for preparing polymeric ligands comprises reacting at least one bridged cyclopentadienyl-type monomer and an initiator under polymerization conditions. In another embodiment, a polymeric ligand is represented by the formula [Q′]n, wherein Q′ is a unit containing at least one bridged cyclopentadienyl-type group and wherein n is 1-5000.Type: GrantFiled: February 10, 2000Date of Patent: April 16, 2002Assignee: Phillips Petroleum CompanyInventors: Peter Schertl, Helmut G. Alt, M. Bruce Welch, Bernd Peifer, Syriac J. Palackal
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Patent number: 6153716Abstract: The present invention provides polymers of ethylene having ethyl branches, a narrow molecular weight distribution, no substantial amount of branches longer than any comonomer employed in the polymerization, and an unusually low branching to density ratio. In one embodiment the polyethylenes are substantially free of any branches having more than 2 carbon atoms, i.e. ethyl branches, and the molar percent of ethyl branches is substantially the same for molecular fractions across the molecular weight distribution. In another embodiment the polyethylenes have other branches having 3 or more carbons and the molar percent of the ethyl branches is substantially the same for molecular fractions across the molecular weight distribution.Type: GrantFiled: December 2, 1998Date of Patent: November 28, 2000Assignee: Phillips Petroleum CompanyInventors: M. Bruce Welch, Helmut G. Alt, Bernd Peifer, Syriac J. Palackal, Gary L. Glass, Ted M. Pettijohn, Gil R. Hawley, Darryl R. Fahey
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Patent number: 6124414Abstract: A catalyst system comprising an organoaluminoxane cocatalyst and a polymeric fluorenyl-containing metallocene prepared from a polymer resulting from the polymerization of a 2-vinylfluorene compound or the alkylation of a fluorene compound.Type: GrantFiled: March 26, 1998Date of Patent: September 26, 2000Assignee: Phillips Petroleum CompanyInventors: Bernd Peifer, Syriac J. Palackal, M. Bruce Welch, Helmut G. Alt, Peter Schertl
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Patent number: 6057410Abstract: Polymeric ligands, polymeric metallocenes, and processes for preparing same are provided. The process for preparing polymeric metallocenes comprises reacting a polymeric ligand, a transition metal compound, and an alkali metal compound. In one embodiment, a process for preparing polymeric ligands comprises reacting at least one bridged cyclopentadienyl-type monomer and an initiator under polymerization conditions. In another embodiment, a polymeric ligand is represented by the formula [Q'].sub.n, wherein Q' is a unit containing at least one bridged cyclopentadienyl-type group and wherein n is 1-5000. In another embodiment, a polymeric metallocene is represented by the formula [Q"MX.sub.m ].sub.Type: GrantFiled: March 26, 1998Date of Patent: May 2, 2000Assignee: Phillips Petroleum CompanyInventors: Helmut G. Alt, Peter Schertl, Bernd Peifer, Syriac J. Palackal, M. Bruce Welch
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Patent number: 6040402Abstract: A polymerization process comprising contacting at least one olefin under polymerization conditions with a catalyst composition produced by combining an organoaluminoxane cocatalyst and a polymeric metallocene catalyst prepared by (1) forming a fluorine-containing polymer by (a) polymerizing a 2-vinyl fluorenyl compound or (b) polymerizing a fluorenyl compound by reacting it with chloro methyl methyl ether in the presence of zinc dichloride or aluminum trichloride; (2) reacting the fluorenyl-containing polymer with an alkali metal compound; and (3) reacting the product of step (2) with a transition metal-containing compound.Type: GrantFiled: March 26, 1998Date of Patent: March 21, 2000Assignee: Phillips Petroleum CompanyInventors: Bernd Peifer, Syriac J. Palackal, M. Bruce Welch, Helmut G. Alt, Peter Schertl
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Patent number: 5830958Abstract: A process for preparing polynuclear metallocenes by reacting a metallocene in which one of the cyclopentadienyl-containing radicals has a substituent having olefinic or acetylenic unsaturation with a second metallocene having a metal which comes from groups IVb to VIb of the periodic table and a metal-hydride bond. The use of the resulting metallocenes in the polymerization of olefins is disclosed, including techniques for using such metallocenes to produce solid prepolymerized metallocene-containing catalyst systems suitable for use in the polymerization of olefins.Type: GrantFiled: May 12, 1995Date of Patent: November 3, 1998Assignee: Phillips Petroleum CompanyInventors: Bernd Peifer, Helmut G. Alt, M. Bruce Welch
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Patent number: 5770755Abstract: Processes to prepare polymeric metallocene are provided. Said processes comprise reacting a polymeric ligand, an alkali metal compound, and a transition metal-containing compound to produce said polymeric metallocene. therefor.Type: GrantFiled: November 15, 1994Date of Patent: June 23, 1998Assignee: Phillips Petroleum CompanyInventors: Peter Schertl, Helmut G. Alt, Bernd Peifer, Syriac J. Palackal, M. Bruce Welch
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Patent number: 5770663Abstract: Double bound metallocenes, i.e. metallocenes having a cyclopentadienyl-containing radical that is bound to a transition metal both by a pi bond and by a sigma carbon bond of a substituent of that same cyclopentadienyl-containing radical can be prepared by reducing metallocenes having a cyclopentadienyl-containing radical having at least one an unsaturated substituent. Also a process for producing polymers comprising contacting at least one olefinic monomer under suitable polymerization conditions with such double bound metallocenes.Type: GrantFiled: March 7, 1997Date of Patent: June 23, 1998Assignee: Phillips Petroleum CompanyInventors: Bernd Peifer, Helmut G. Alt, M. Bruce Welch
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Patent number: 5744666Abstract: A process for preparing an alkynyl fulvene group containing compound and said compound is provided. Said process comprises reacting an alkynyl ketone compound with a cyclopentadienyl-type compound.Type: GrantFiled: December 6, 1996Date of Patent: April 28, 1998Assignee: Phillips Petroleum CompanyInventors: M. Bruce Welch, Bernd Peifer, Helmut G. Alt
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Patent number: 5728908Abstract: A process for preparing a bridged ligand, where said bridged ligand has an alkynyl group, and said bridged ligand is provided. Said process comprises reacting an alkynyl fulvene containing compound with an alkali metal salt of a cyclopentadienyl-type compound.Type: GrantFiled: December 6, 1996Date of Patent: March 17, 1998Assignee: Phillips Petroleum CompanyInventors: M. Bruce Welch, Bernd Peifer, Helmut G. Alt
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Patent number: 5712404Abstract: In accordance with the present invention there is provided a process for preparing a cyclopentadienyl-type ligand comprising reacting an alkali metal compound and a fulvene-type compound to form a dianion, and then reacting the dianion with water. In accordance with another embodiment of the present invention a process for preparing a metallocene compound is provided comprising reacting an alkali metal compound, a fulvene-type compound, and a transition metal-containing compound. In another embodiment, the metallocene compound and a cocatalyst are combined to form a catalyst system. Other aspects of the invention include the cyclopentadienyl-type ligands, metallocene compounds, and catalyst systems thus produced and polymerization processes employing the catalyst systems.Type: GrantFiled: May 15, 1995Date of Patent: January 27, 1998Assignee: Phillips Petroleum CompanyInventors: Bernd Peifer, Helmut G. Alt, M. Bruce Welch
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Patent number: 5705578Abstract: Methods are disclosed for preparing a highly active solid metallocene-containing catalyst system and its use in the polymerization of olefins. The solid catalyst system is prepared by combining an aluminoxane with a metallocene having a substituent which has internal alkynyl unsaturation in a suitable liquid to form a liquid catalyst system, conducting prepolymerization of an olefin in the liquid catalyst system, and separating the resulting solid metallocene-containing catalyst system from the last reaction product mixture. Also polymerization of olefins using the inventive solid catalyst system is disclosed.Type: GrantFiled: May 4, 1995Date of Patent: January 6, 1998Assignee: Phillips Petroleum CompanyInventors: Bernd Peifer, Helmut G. Alt, M. Bruce Welch
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Patent number: 5670589Abstract: In accordance with the present invention, there is provided an organoaluminoxy product prepared by the process comprising reacting an organoaluminoxane with an ene-ol compound. In another embodiment, the organoaluminoxane can be prepared in situ by the process comprising reacting a hydrocarbylaluminum compound, water, and the ene-ol compound. Further there is provided olefin polymerization catalyst systems comprising the organoaluminoxy product and at least one transition metal-containing catalyst. Optionally, the catalyst system is prepolymerized in the presence of at least one olefin to form a prepolymerized catalyst system. Still further there is provided processes for the polymerization of olefins using the catalyst systems.Type: GrantFiled: February 8, 1995Date of Patent: September 23, 1997Assignee: Phillips Petroleum CompanyInventors: Rolf L. Geerts, M. Bruce Welch, Syriac J. Palackal, Helmut G. Alt, Bernd Peifer, Harold R. Deck
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Patent number: 5654454Abstract: Double bound metallocenes, i.e. metallocenes having a cyclopentadienyl-containing radical that is bound to a transition metal both by a pi bond and by a sigma carbon bond of a substituent of that same cyclopentadienyl-containing radical can be prepared by reducing metallocenes having a cyclopentadienyl-containing radical having at least one an unsaturated substituent. Also a process for producing polymers comprising contacting at least one olefinic monomer under suitable polymerization conditions with such double bound metallocenes.Type: GrantFiled: May 30, 1995Date of Patent: August 5, 1997Assignee: Phillips Petroleum CompanyInventors: Bernd Peifer, Helmut G. Alt, M. Bruce Welch
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Patent number: 5631203Abstract: Metallocene compounds and processes for preparing such metallocene compounds are provided. Such processes for preparing such metallocene compounds comprise reacting an alkynyl ligand, an alkali metal compound, and a transition metal-containing compound.Type: GrantFiled: May 4, 1995Date of Patent: May 20, 1997Assignee: Phillips Petroleum CompanyInventors: M. Bruce Welch, Helmut G. Alt, Bernd Peifer
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Patent number: 5616752Abstract: A method is provided for forming a supported cyclopentadiene-type compound comprising contacting a cyclopentadiene-type compound containing an active halogen with an inorganic support having surface hydroxyl group. Also there is provided a method of preparing a supported metallocene comprising reacting the supported cyclopentadiene-type compound with a transition metal compound under suitable conditions. There is also provided a process for producing bridged cyclopentadiene-type ligands having a bridge having branch that has a terminal vinyl group. Also metallocenes of these ligands are provided. Still further there is provided a process for producing bridged cyclopentadiene-type ligands having a bridge having a branch that has a terminal active halogen. The resulting new ligands and supported metallocenes produced therefrom are also provided.Type: GrantFiled: June 5, 1995Date of Patent: April 1, 1997Assignee: Phillips Petroleum CompanyInventors: Konstantinos Patsidis, Bernd Peifer, Helmut G. Alt, Rolf L. Geerts, Darryl R. Fahey, M. Bruce Welch, Syriac J. Palackal, Harold R. Deck
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Patent number: 5565592Abstract: A method is provided for forming a supported cyclopentadiene-type compound comprising contacting a cyclopentadiene-type compound containing an active halogen with an inorganic support having surface hydroxyl group. Also there is provided a method of preparing a supported metallocene comprising reacting the supported cyclopentadiene-type compound with a transition metal compound under suitable conditions. There is also provided a process for producing bridged cyclopentadiene-type ligands having a bridge having branch that has a terminal vinyl group. Also metallocenes of these ligands are provided. Still further there is provided a process for producing bridged cyclopentadiene-type ligands having a bridge having a branch that has a terminal active halogen. The resulting new ligands and supported metallocenes produced therefrom are also provided.Type: GrantFiled: March 10, 1995Date of Patent: October 15, 1996Assignee: Phillips Petroleum CompanyInventors: Konstantinos Patsidis, Bernd Peifer, Syriac J. Palackal, Helmut G. Alt, M. Bruce Welch, Rolf L. Geerts, Darryl R. Fahey, Harold R. Deck
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Patent number: 5498581Abstract: Methods are disclosed for preparing a highly active solid metallocene-containing catalyst system and its use in the polymerization of olefins. The catalyst system is prepared by creating a catalyst system solution by combining an aluminoxane with a metallocene having a substituent which has olefinic unsaturation in a suitable liquid to form a liquid catalyst system, conducting prepolymerization of an olefin in the liquid catalyst system, and separating the resulting solid metallocene-containing catalyst system from the reaction mixture. Also polymerization of olefins using the inventive solid catalyst system is disclosed.Type: GrantFiled: June 1, 1994Date of Patent: March 12, 1996Assignee: Phillips Petroleum CompanyInventors: M. Bruce Welch, Helmut G. Alt, Bernd Peifer, Syriac J. Palackal, Gary L. Glass, Ted M. Pettijohn, Gil R. Hawley, Darryl R. Fahey
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Patent number: 5492974Abstract: A polymer bound ligand represented by the formula QM(R).sub.m and process for preparing same are provided, wherein Q is a polystyrene, M is Si, C, Ge, Sn, P, or N, each R is a that at least one R is a cyclopentadienyl-type compound, and m is 2 or 3, said process comprising reacting a metallated polystyrene and an organohalide compound, wherein the polystyrene is metallated with an alkali metal, and wherein said organohalide compound is represented by the formula XM(R).sub.m wherein X is a halide. Other aspects of the present invention include a polymer bound metallocene represented by the formula QM(R).sub.m ZY.sub.n and a process for preparing same, wherein Z is a transition metal, Y is a halide, methyl, hydrogen, or a cyclopentadienyl-type group, and n is 2 or 3. Other aspects of the present invention include a catalyst system comprising the polymer bound metallocene and an organoaluminoxane, a method for preparing same, and a polymerization process employing the catalyst system.Type: GrantFiled: May 31, 1995Date of Patent: February 20, 1996Assignee: Phillips Petroleum CompanyInventors: Bernd Peifer, Helmut G. Alt, M. Bruce Welch, Syriac J. Palackal
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Patent number: 5492973Abstract: A polymer bound ligand represented by the formula QM(R).sub.m and process for preparing same are provided, wherein Q is a polystyrene, M is Si, C, Ge, Sn, P, or N, each R is a that at least one R is a cyclopentadienyl-type compound, and m is 2 or 3, said process comprising reacting a metallated polystyrene and an organohalide compound, wherein the polystyrene is metallated with an alkali metal, and wherein said organohalide compound is represented by the formula XM(R).sub.m wherein X is a halide. Other aspects of the present invention include a polymer bound metallocene represented by the formula QM(R).sub.m ZY.sub.n and a process for preparing same, wherein Z is a transition metal, Y is a halide, methyl, hydrogen, or a cyclopentadienyl-type group, and n is 2 or 3. Other aspects of the present invention include a catalyst system comprising the polymer bound metallocene and an organoaluminoxane, a method for preparing same, and a polymerization process employing the catalyst system.Type: GrantFiled: May 31, 1995Date of Patent: February 20, 1996Assignee: Phillips Petroleum CompanyInventors: Bernd Peifer, Helmut G. Alt, M. Bruce Welch, Syriac J. Palackal