Patents by Inventor Helmut G. Alt

Helmut G. Alt 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).

  • Patent number: 6531554
    Abstract: Metallocycle metallocenes are produced by reacting a first metallocene having an aralkyl group or an aryl dialkyl silyl group attached to a cyclodienyl group with about two molar equivalents of an alkali metal alkyl having at least 4 carbon atoms. The use of the metallocycle metallocenes as components of catalyst for the polymerization of olefins is also disclosed.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: March 11, 2003
    Assignee: Phillips Petroleum Company
    Inventors: Helmut G. Alt, M. Bruce Welch
  • Patent number: 6509427
    Abstract: Metallocene having two cyclic dienyl groups connected by a single carbon having an aryl substituent and a terminally unsaturated hydrocarbyl substituent, olefin polymerization catalyst systems prepared therefrom, and the use of such catalyst systems are disclosed.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: January 21, 2003
    Assignee: Phillips Petroleum Company
    Inventors: M. Bruce Welch, Syriac J. Palackal, Bryan E. Hauger, David W. Dockter, Alexander Köppl, Helmut G. Alt
  • Patent number: 6482905
    Abstract: Unsymmetrical unbridged bis-substituted indenyl compounds in which one indenyl is substituted by a 2-aryl or 2-aryl alkyl substituent and the other indenyl is substituted by a terminally unsaturated alkenyl or alkyl substituent in the 1 or 2 position and their use in the polymerization of olefins.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: November 19, 2002
    Assignee: Phillips Petroleum Company
    Inventors: Roland Schmidt, Matthias Deppner, Helmut G. Alt, M. Bruce Welch
  • Patent number: 6482967
    Abstract: Metallocenes having a 9-fluorenyl group and another cyclic dienyl group connected by a single carbon having a terminally unsaturated hydrocarbyl substituent wherein the 9-fluorenyl group has a hydrocarbyl substituent in the 4 position, olefin polymerization catalyst systems prepared therefrom, and the use of such catalyst systems are disclosed.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: November 19, 2002
    Assignee: Phillips Petroleum Company
    Inventors: Alexander Köppl, Helmut G. Alt, M. Bruce Welch
  • Patent number: 6475947
    Abstract: A process for producing a new metallocene comprising reacting a first bridged metallocene which has an olefinically unsaturated with about two molar equivalents of an alkali metal alkyl, catalyst systems resulting from the combination of the resulting metallocenes and a cocatalyst, and polymerization processes using such catalyst systems are disclosed.
    Type: Grant
    Filed: September 10, 1999
    Date of Patent: November 5, 2002
    Assignee: Phillips Petroleum Company
    Inventors: Erik Licht, Helmut G. Alt, M. Bruce Welch, Bryan E. Hauger
  • Patent number: 6458905
    Abstract: A polymerization process for polymerizing at least one olefin in the presence of a pyridyldiimine metal complex as a catalyst having one of the following structures: The metal M of the complex is a transition metal from Group 4b, 5b or 6b of the Periodic Table such as vanadium. The invention also relates to the use of these metal complexes as olefin polymerization or oligomerization catalysts, optionally in combination with metal alumoxane and similar catalyst activators.
    Type: Grant
    Filed: August 16, 2000
    Date of Patent: October 1, 2002
    Assignee: Phillips Petroleum Company
    Inventors: Roland Schmidt, Ulrich Hammon, M. Bruce Welch, Helmut G. Alt, Bryan E. Hauger, Ronald D. Knudsen
  • Patent number: 6420579
    Abstract: Bridged and unbridged fluorenyl-containing metallocenes of the formula R″x(FlRn)(CpRm)MQk wherein Fl is a fluorenyl radical, Cp is a cyclopentadienyl, indenyl, tetrahydroindenyl, or fluorenyl radical, each R is an organo radical, R″ is a structural bridge linking (FlRn) and (CpRm), M is a metal selected from the group consisting of IVB, VB, and VIB metals, each Q is selected from the group consisting of hydrocarbyl or hydrocarbyloxy radicals and halogen, x is 1 or 0, k is an integer sufficient to fill out the remaining valences of M, n is in the range of 0 to 7, and m is 0 to 7, further characterized by the fact that if (CpRm) is unsubstituted fluorenyl and metallocene is an unbridged metallocene, then n is 1 to 7 and if R″ is 1,1-dimethylmethylene and (CpRm) is unsubstituted cyclopentadienyl or 3-methylcyclopentadienyl, then n is 1 to 7.
    Type: Grant
    Filed: December 9, 1994
    Date of Patent: July 16, 2002
    Assignee: Phillips Petroleum Company
    Inventors: 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
  • Patent number: 6403734
    Abstract: Bridged fluorenyl-containing metallocenes of metals of Groups 4-6 and their use in forming homopolymers of alpha olefins or polymers of ethylene and optionally minor amounts of alpha olefins, wherein in each case at least one of the cyclic groups of the bridged ligand is a fluorenyl and the other is selected from indenyl, tetrahydroindenyl, fluorenyl, and in the case of the polymerization of ethylene optionally cyclopentadienyl.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: June 11, 2002
    Assignee: Phillips Petroleum Company
    Inventors: 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
  • Publication number: 20020065190
    Abstract: A process for producing a new metallocene comprising reacting a first metallocene which has a cyclodiene group having an olefinically unsaturated substituent with about two molar equivalents of an alkali metal alkyl, catalyst systems resulting from the combination of the resulting metallocene and an organoaluminum cocatalysts, and polymerization processes using such catalyst systems are disclosed.
    Type: Application
    Filed: October 22, 2001
    Publication date: May 30, 2002
    Applicant: Phillips Petroleum Company
    Inventors: Erik Licht, Helmut G. Alt, M. Bruce Welch
  • Patent number: 6372930
    Abstract: 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: Grant
    Filed: February 10, 2000
    Date of Patent: April 16, 2002
    Assignee: Phillips Petroleum Company
    Inventors: Peter Schertl, Helmut G. Alt, M. Bruce Welch, Bernd Peifer, Syriac J. Palackal
  • Publication number: 20020039960
    Abstract: Metallocycle metallocenes are produced by reacting a first metallocene having an aralkyl group or an aryl dialkyl silyl group attached to a cyclodienyl group with about two molar equivalents of an alkali metal alkyl having at least 4 carbon atoms. The use of the metallocycle metallocenes as components of catalyst for the polymerization of olefins is also disclosed.
    Type: Application
    Filed: October 11, 2001
    Publication date: April 4, 2002
    Applicant: Phillips Petroleum Company
    Inventors: Helmut G. Alt, M. Bruce Welch
  • Patent number: 6340651
    Abstract: A process for producing a metallocycle metallocene comprising reacting a reactant metallocene which has a cyclopentadienyl group having an alkenyl group attached which has at least 3 carbon atoms with about 2 molar equivalents of an alkali metal alkyl having at least 4 carbon atoms, catalyst systems resulting from the combination of the metallocycle metallocene and an organic cocatalyst, and polymerization processes using such catalyst systems are disclosed.
    Type: Grant
    Filed: April 26, 1999
    Date of Patent: January 22, 2002
    Assignee: Phillips Petroleum Company
    Inventors: Erik Licht, Helmut G. Alt, M. Bruce Welch
  • Publication number: 20010056033
    Abstract: Metallocenes having a 9-fluorenyl group and another cyclic dienyl group connected by a single carbon having a terminally unsaturated hydrocarbyl substituent wherein the 9-fluorenyl group has a hydrocarbyl substituent in the 4 position, olefin polymerization catalyst systems prepared therefrom, and the use of such catalyst systems are disclosed.
    Type: Application
    Filed: August 7, 2001
    Publication date: December 27, 2001
    Applicant: Phillips Petroleum Company
    Inventors: Alexander Koppl, Helmut G. Alt, M. Bruce Welch
  • Patent number: 6329312
    Abstract: Metallocycle metallocenes are produced by reacting a first metallocene having an aralkyl group or an aryl dialkyl silyl group attached to a cyclodienyl group with about two molar equivalents of an alkali metal alkyl having at least 4 carbon atoms. The use of the metallocycle metallocenes as components of catalyst for the polymerization of olefins is also disclosed.
    Type: Grant
    Filed: June 17, 1999
    Date of Patent: December 11, 2001
    Assignee: Phillips Petroleum Company
    Inventors: Erik Licht, Helmut G. Alt, M. Bruce Welch
  • Patent number: 6329541
    Abstract: An (organo) ((omega-alkenyl) cyclopentacarbyl) (silane-bridged) metallocene compound is provided. Polymerization processes therewith are also provided.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: December 11, 2001
    Assignee: Phillips Petroleum Company
    Inventors: Michael Jung, Helmut G. Alt, M. Bruce Welch
  • Patent number: 6291382
    Abstract: Metallocenes having a 9-fluorenyl group and another cyclic dienyl group connected by a single carbon having a terminally unsaturated hydrocarbyl substituent wherein the 9-fluorenyl group has a hydrocarbyl substituent in the 4 position, olefin polymerization catalyst systems prepared therefrom, and the use of such catalyst systems are disclosed.
    Type: Grant
    Filed: May 24, 1999
    Date of Patent: September 18, 2001
    Assignee: Phillips Petroleum Company
    Inventors: Alexander Köppl, Helmut G. Alt, M. Bruce Welch
  • Patent number: 6268453
    Abstract: A solid cocatalyst is prepared by reacting a suitable support base with an organoaluminum compound and then reacting that product with an activity promoting amount of water. The solid cocatalyst can be combined with a polymerization catalyst to form a catalyst system useful for the polymerization of olefins.
    Type: Grant
    Filed: October 18, 1999
    Date of Patent: July 31, 2001
    Assignee: Phillips Petroleum Company
    Inventors: Alexander Köppl, Helmut G. Alt, Syriac J. Palackal, M. Bruce Welch
  • Patent number: 6262201
    Abstract: Substituted metallocenes which have a substituent selected from the group consisting of aryl alkyl, aryl alkyl silyl, and aryl silyl groups, catalyst systems resulting from the combination of such metallocenes and a cocatalyst, and for producing olefins using such catalyst systems.
    Type: Grant
    Filed: June 17, 1999
    Date of Patent: July 17, 2001
    Assignee: Phillips Petroleum Company
    Inventors: M. Bruce Welch, Erik Licht, Helmut G. Alt
  • Patent number: 6221981
    Abstract: 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: Grant
    Filed: September 14, 1998
    Date of Patent: April 24, 2001
    Assignee: Phillips Petroleum Company
    Inventors: Michael Jung, Helmut G. Alt, Bryan E. Hauger, M. Bruce Welch, David W. Dockter, Syriac J. Palackal, Antoni Jurkiewicz
  • Patent number: 6187880
    Abstract: Metallocene having two cyclic dienyl groups connected by a single carbon having an aryl substituent and a terminally unsaturated hydrocarbyl substituent, olefin polymerization catalyst systems prepared therefrom, and the use of such catalyst systems are disclosed.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: February 13, 2001
    Assignee: Phillips Petroleum Company
    Inventors: M. Bruce Welch, Syriac J. Palackal, Bryan E. Hauger, David W. Dockter, Alexander Köppl, Helmut G. Alt