Patents by Inventor M. Bruce Welch
M. Bruce Welch 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: 5563284Abstract: In accordance with the present invention there is provided a cyclopentadienyl-type ligand represented by the formula ZA, wherein Z is a cyclopentadienyl-type group, wherein A is --YPR.sub.2, --YNR.sub.2, or --NR.sub.2, wherein Y is an alkylene group containing 1 to 24 carbon atoms, wherein each R is individually selected from alkyl groups containing 1 to 20 carbon atoms. Another aspect of the invention is to provide a metallocene represented by the formula ZAMX.sub.3, wherein Z and A are as described above, M is a Group IVB or VB transition metal, and X is a halide. Other aspects of the present invention include catalyst systems comprising the metallocenes and an organoaluminoxane, processes for preparing the above defined ligands, metallocenes and catalyst systems, and polymerization processes employing the catalyst systems.Type: GrantFiled: September 9, 1994Date of Patent: October 8, 1996Assignee: Phillips Petroleum CompanyInventors: Krisztina Frey, Gabriele von Massow, Helmut G. Alt, M. Bruce Welch
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Patent number: 5554795Abstract: In accordance with the present invention there is provided a cyclopentadienyl-type ligand represented by the formula ZA, wherein Z is a cyclopentadienyl-type group, wherein A is --YPR.sub.2, --YNR.sub.2, or --NR.sub.2, wherein Y is an alkylene group containing 1 to 24 carbon atoms, wherein each R is individually selected from alkyl groups containing 1 to 20 carbon atoms. Another aspect of the invention is to provide a metallocene represented by the formula ZAMX.sub.3, wherein Z and A are as described above, M is a Group IVB or VB transition metal, and X is a halide. Other aspects of the present invention include catalyst systems comprising the metallocenes and an organoaluminoxane, processes for preparing the above defined ligands, metallocenes and catalyst systems, and polymerization processes employing the catalyst systems.Type: GrantFiled: May 19, 1995Date of Patent: September 10, 1996Assignee: Phillips Petroleum CompanyInventors: Krisztina Frey, Gabriele von Massow, Helmut G. Alt, M. Bruce Welch
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Patent number: 5541272Abstract: Unbridged indenyl-containing metallocenes are disclosed along with methods for making the metallocenes. Also disclosed are methods for using the metallocenes as polymerization catalysts. In addition, polymers resulting from such polymerizations are disclosed.Type: GrantFiled: June 3, 1994Date of Patent: July 30, 1996Assignee: Phillips Petroleum CompanyInventors: Michael Schmid, Helmut G. Alt, M. Bruce Welch
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Patent number: 5534473Abstract: A catalyst system comprising a bridged fluorenyl-containing metallocene, an unbridged metallocene, and a suitable cocatalyst and the use of such catalyst systems to produce olefin polymers. Also novel olefin polymers produced by those processes.Type: GrantFiled: June 5, 1995Date of Patent: July 9, 1996Assignee: Phillips Petroleum CompanyInventors: M. Bruce Welch, Rolf L. Geerts, Syriac J. Palackal, Ted M. Pettijohn
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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: 5492978Abstract: 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: 5492975Abstract: 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
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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: 5473020Abstract: 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: June 30, 1994Date of Patent: December 5, 1995Assignee: Phillips Petroleum CompanyInventors: Bernd Peifer, Helmut G. Alt, M. Bruce Welch, Syriac J. Palackal
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Patent number: 5466766Abstract: 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: November 17, 1993Date of Patent: November 14, 1995Assignee: 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: 5459218Abstract: Fluorenyl-containing silyl bridged metallocenes, the process of using such metallocenes to polymerize olefins, and the resulting unusual syndiotactic polypropylene are disclosed.Type: GrantFiled: December 9, 1994Date of Patent: October 17, 1995Assignee: Phillips Petroleum CompanyInventors: Syriac J. Palackal, Helmut G. Alt, Konstantinos Patsidis, Tara G. Hill, Gil R. Hawley, Peter P. Chu, M. Bruce Welch, Rolf L. Geerts
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Patent number: 5451649Abstract: Benzofluorenyl-containing metallocenes are disclosed along with methods for making the metallocenes. Also disclosed are methods for using the metallocenes as polymerization catalysts. In addition, polymers resulting from such polymerizations are disclosed.Type: GrantFiled: March 17, 1994Date of Patent: September 19, 1995Assignee: Phillips Petroleum CompanyInventors: Roland Zenk, Helmut G. Alt, M. Bruce Welch
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Patent number: 5436305Abstract: Fluorenyl-containing metallocenes are disclosed along with methods for making the metallocenes. Also disclosed are methods for using the metallocenes as polymerization catalysts. In addition, polymers resulting from such polymerizations are disclosed.Type: GrantFiled: July 23, 1991Date of Patent: July 25, 1995Assignee: Phillips Petroleum CompanyInventors: Helmut G. Alt, Syriac J. Palackal, Konstantinos Patsidis, M. Bruce Welch, Rolf L. Geerts, Eric T. Hsieh, Max P. McDaniel, Gil R. Hawley, Paul D. Smith
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Patent number: 5420320Abstract: In accordance with the present invention there is provided a process for preparing a cyclopentadienyl-type ligand, the process comprises (1) reacting an alkali metal salt of a cyclopentadienyl-type compound and an aminofulvene compound to form a monoanion, (2) reacting the monoanion and a reducing agent to form a dianion, and (3) reacting the dianion and water to produce the cyclopentadienyl-type ligand. Another aspect of the present invention includes a process for preparing a metallocene compound comprising reacting the dianion of step (2) and a transition metal-containing compound to form the metallocene compound. Another aspect of the present invention includes a process for preparing a metallocene compound comprising reacting the ligand of step (3) and an alkali metal compound to form a dianion and then reacting the dianion with a transition metal-containing compound to form the metallocene compound.Type: GrantFiled: June 8, 1994Date of Patent: May 30, 1995Assignee: Phillips Petroleum CompanyInventors: Roland Zenk, Helmut G. Alt, M. Bruce Welch, Syriac J. Palackal
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Patent number: 5416179Abstract: A process for the polymerization of mono-1-olefins employing a catalyst composition comprising a metallocene compound and isobutene. The catalyst composition exhibits improved productivity. In a preferred embodiment an aluminoxane is employed as a cocatalyst.Type: GrantFiled: March 16, 1994Date of Patent: May 16, 1995Assignee: Phillips Petroleum CompanyInventors: M. Bruce Welch, Paul Barbee
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Patent number: 5401817Abstract: Fluorenyl-containing silyl bridged metallocenes, the process of using such metallocenes to polymerize olefins, and the resulting unusual syndiotactic polypropylene are disclosed.Type: GrantFiled: May 20, 1993Date of Patent: March 28, 1995Assignee: Phillips Petroleum CompanyInventors: Syriac J. Palackal, Helmut G. Alt, Konstantinos Patsidis, Tara G. Hill, Gil R. Hawley, Peter P. Chu, M. Bruce Welch, Rolf L. Geerts
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Patent number: 5399636Abstract: A composition is provided comprising a metallocene having the formula of: ##STR1## wherein each Z can be the same or different hydrocarbyl radical selected from the group consisting of cyclopentadienyl, indenyl, tetrahydroindenyl, fluorenyl, and mixtures thereof; each X can be the same or different and is selected from the group consisting of hydrogen, fluorine, chlorine, bromine, iodine, R, OR, NR.sub.2, PR.sub.2, or OQ, or mixtures thereof wherein the R is a C.sub.1 -C.sub.20 hydrocarbyl radical and Q is an inorganic moiety selected from the group consisting of silica, alumina, clay, phosphated alumina, and mixtures thereof; each Y can be the same or different and is an alkyl group, hydrogen, fluorine, chlorine, bromine, iodine, or mixtures thereof; E is selected from C, Sn, Si, Ge, B, Al, N, or P; M is a metal selected from Ti, Zr, Hf, Sc, Y, V, or La; m is a number sufficient to fill out the valences of metal M; and n is 1 or 2.Type: GrantFiled: June 11, 1993Date of Patent: March 21, 1995Assignee: Phillips Petroleum CompanyInventors: Helmut G. Alt, Konstantinos Patsidis, M. Bruce Welch, Rolf L. Geerts, Bernd Peifer, Syriac J. Palackal
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Patent number: 5319029Abstract: A composition of matter comprising: (a) 5 to 40 weight percent inclusive of a low molecular weight ethylene resin made using a titanium catalyst system said resin having a density greater than 0.955 grams per cubic centimeter, a melt index greater than 25 grams per 10 minutes, and a heterogeneity index between 2 and 8 inclusive; and (b) 60 to 95 weight percent inclusive of a high molecular weight ethylene copolymer resin made using a chromium catalyst system said resin having a density of at least 0.93 grams per cubic centimeter, a high load melt index between 1.5 and 15 grams per 10 minutes, and a heterogeneity index between 6 and 100 inclusive; wherein said composition of matter has a melt index greater than 0.05 grams per 10 minutes.Type: GrantFiled: April 16, 1993Date of Patent: June 7, 1994Assignee: Phillips Petroleum CompanyInventors: Joel L. Martin, M. Bruce Welch, William R. Coutant, Max P. McDaniel
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Patent number: 5306775Abstract: A composition of matter comprising: (a) 30 to 70 weight percent inclusive of a low molecular weight ethylene resin made using a chromium catalyst system said resin having a density of at least 0.955 grams per cubic centimeter, a melt index from 25 to 400 grams per 10 minutes, and a heterogeneity index between 2 and 35 inclusive; and (b) 30 to 70 weight percent inclusive of a high molecular weight ethylene copolymer resin made using a titanium catalyst system said resin having a density not greater than 0.955 grams per cubic centimeter, a high load melt index between 0.1 and 50 grams per 10 minutes inclusive, and a heterogeneity index between 2 and 10 inclusive; wherein said composition of matter has a melt index greater than 0.05 grams per 10 minutes.Type: GrantFiled: April 16, 1993Date of Patent: April 26, 1994Assignee: Phillips Petroleum CompanyInventors: Joel L. Martin, M. Bruce Welch, William R. Coutant, Max P. McDaniel