Patents by Inventor David L. Beach

David L. Beach 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: 6583241
    Abstract: The present invention is directed to producing a resin which, when formed into a film, has excellent gas barrier and/or moisture barrier (low MVTR) properties. Further, the resin has a relatively high molecular weight distribution, preferably above 6, and has excellent processability/extrudability. The resin is produced using a cyclopentadienyl chromium compound, preferably a mono CpCr compound, on a support, preferably a silica support. A particularly preferred catalyst for use in the present invention comprises pentamethylcyclopentadienyidimethylchromiumpyridine. Preferably, the catalyst is used in a slurry polymerization process.
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: June 24, 2003
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: David L. Beach, Charles D. Mills, Javier M. Mora, Mary A. Schexnayder, James A. Solis, Kevin J. Taylor
  • Patent number: 6031055
    Abstract: A method of controlling the molecular weight distribution of a polyalpha-olefin during polymerization, comprising changing the aluminoxane to chromium ratio of a polymerization catalyst comprising chromium and at least one aluminoxane to thereby adjust the molecular weight distribution.
    Type: Grant
    Filed: January 25, 1993
    Date of Patent: February 29, 2000
    Assignee: Chevron Chemical Company
    Inventors: Pamela R. Auburn, David L. Beach
  • Patent number: 5968862
    Abstract: Disclosed is a catalyst precursor, useful to make catalysts useful in the polymerization of olefins, comprising the product obtained by adding a preformed magnesium source to a solution comprising a solvent having dissolved therein a transition metal compound and an alkyl halide.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 19, 1999
    Assignee: Chevron Chemical Company
    Inventors: Ronald G. Abbott, Michael J. Krause, David L. Beach
  • Patent number: 5593931
    Abstract: Disclosed is a catalyst system for the homopolymerization of alpha-olefins having 2-8 carbon atoms, said catalyst system comprising a mixed-valent dimeric Group 6b metal compound catalyst precursor wherein one atom of said Group 6b metal is a cyclopentadienyl Group 6b metal hydrocarbyl complex in which the Group 6b metal has an oxidation state +3 and wherein one atom of said Group 6b metal is a cyclopentadienyl alkaryl complex in which the Group 6b metal has an oxidation state +1, said dimeric Group 6b metal compound being supported on an inorganic support. The catalyst system can contain, in addition, a Group 2 or Group 3 metal-alkyl compound.
    Type: Grant
    Filed: March 3, 1995
    Date of Patent: January 14, 1997
    Assignee: Chevron Chemical Company
    Inventors: David L. Beach, Michael J. Carney, Javier M. Mora
  • Patent number: 5420372
    Abstract: An alpha-olefin oligomer consisting essentially of repeating units having the structural formula: ##STR1## wherein x represents an integer from 3 to 11, inclusive; andy represents the number of repeating units in the oligomer such that the weight average molecular weight is from about 5,000 to about 20,000;said oligomer having from about 70 to 100 percent head-to-tail alignment of the repeating units of the oligomer. Preferably the weight average molecular weight of the oligomer is from 5,000 to about 10,000; and said oligomer is further characterized as having a dispersity of less than about 5.5, and a Z average molecular weight of less than about 24,000.
    Type: Grant
    Filed: December 30, 1992
    Date of Patent: May 30, 1995
    Assignee: Chevron Chemical Company
    Inventors: David L. Beach, Paul G. Bercik, Neal E. Morganson
  • Patent number: 5418200
    Abstract: Disclosed is a catalyst system for the homopolymerization and copolymerization of alpha-olefins having 2-8 carbon atoms, said catalyst system comprising a cyclopentadienyl Group 6b metal hydrocarbyl compound in which the metal has an oxidation state of +3, said Group 6b metal compound being supported on an inorganic support. The catalyst system may also contain a Group 2 or Group 3 metal alkyl compound.
    Type: Grant
    Filed: October 20, 1992
    Date of Patent: May 23, 1995
    Assignee: Chevron Chemical Company
    Inventors: Michael J. Carney, David L. Beach
  • Patent number: 5399634
    Abstract: Disclosed is a catalyst system for the homopolymerization and copolymerization of alpha-olefins having 2-8 carbon atoms, said catalyst system comprising a cyclopentadienyl Group 6b metal compound having at least one oxo, thio, imido or phosphido group bonded directly to the Group 6b metal, and at least one organic radical bonded to the Group 6b metal through a carbon atom, said Group 6b metal compound being supported on an inorganic support. The catalyst system may also contain a Group 2 or Group 3 metal alkyl compound cocatalyst.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: March 21, 1995
    Assignee: Chevron Chemical Company
    Inventors: Michael J. Carney, David L. Beach
  • Patent number: 5393720
    Abstract: Disclosed is a catalyst system for the homopolymerization and copolymerization of alpha-olefins having 2-8 carbon atoms, said catalyst system comprising a cyclopentadienyl Group 6b metal compound having at least one oxo, thio, imido or phosphido group bonded directly to the Group 6b metal, and at least one organic radical bonded to the Group 6b metal through a carbon atom, said Group 6b metal compound being supported on an inorganic support. The catalyst system may also contain a Group 2 or Group 3 metal alkyl compound cocatalyst.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: February 28, 1995
    Assignee: Chevron Chemical Company
    Inventors: Michael J. Carney, David L. Beach
  • Patent number: 5320996
    Abstract: Disclosed is a catalyst system for the homopolymerization and copolymerization of alpha-olefins having 2-8 carbon atoms, said catalyst system comprising a cyclopentadienyl Group 6b metal compound having at least one oxo, thio, imido or phosphido group bonded directly to the Group 6b metal, and at least one organic radical bonded to the Group 6b metal through a carbon atom, said Group 6b metal compound being supported on an inorganic support. The catalyst system may also contain a Group 2 or Group 3 metal alkyl compound cocatalyst.
    Type: Grant
    Filed: November 6, 1992
    Date of Patent: June 14, 1994
    Assignee: Chevron Research and Technology Company
    Inventors: Michael J. Carney, David L. Beach
  • Patent number: 5315053
    Abstract: A lubricating oil composition comprising a normally liquid alpha-olefin oligomer consisting essentially of repeating units having the structural formula: ##STR1## wherein x represents an integer from 3 to 11, inclusive; andy represents the number of repeating units in the oligomer such that the weight average molecular weight is from about 5,000 to about 20,000;said oligomer having from about 70 to 100 percent head-to-tail alignment of the repeating units of the oligomer. Preferably the weight average molecular weight of the oligomer is from 5,000 to about 10,000; and said oligomer is further characterized as having a dispersity of less than about 5.5, and a Z average molecular weight of less than about 24,000.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: May 24, 1994
    Assignee: Chevron Research Company
    Inventors: David L. Beach, Paul G. Bercik, Neal E. Morganson
  • Patent number: 5302674
    Abstract: Disclosed is a catalyst system for the homopolymerization and copolymerization of alpha-olefins having 2-8 carbon atoms, said catalyst system comprising a dimeric or tetrameric cyclopentadienyl Group 6b metal compound in which the metal has an oxidation state of +2, said Group 6b metal compound being supported on an inorganic support. The catalyst system may also contain a Group 2 or Group 3 metal alkyl compound cocatalyst.
    Type: Grant
    Filed: May 13, 1993
    Date of Patent: April 12, 1994
    Assignee: Chevron Research and Technology Company
    Inventors: Michael J. Carney, David L. Beach
  • Patent number: 5240895
    Abstract: Disclosed is a catalyst system for the homopolymerization and copolymerization of alpha-olefins having 2-8 carbon atoms, said catalyst system comprising a dimeric or tetrameric cyclopentadienyl Group 6b metal compound in which the metal has an oxidation state of +2, said Group 6b metal compound being supported on an inorganic support. The catalyst system may also contain a Group 2 or Group 3 metal alkyl compound cocatalyst.
    Type: Grant
    Filed: November 6, 1992
    Date of Patent: August 31, 1993
    Assignee: Chevron Research and Technology Company
    Inventors: Michael J. Carney, David L. Beach
  • Patent number: 5177276
    Abstract: An alpha-olefin oligomer consisting essentially of repeating units having the structural formula: ##STR1## wherein x represents an integer from 3 to 11, inclusive; andy represents the number of repeating units in the oligomer such that the weight average molecular weight is from about 5,000 to about 20,000;said oligomer having from about 70 to 100 percent head-to-tail alignment of the repeating units of the oligomer. Preferably the weight average molecular weight of the oligomer is from 5,000 to about 10,000; and said oligomer is further characterized as having a dispersity of less than about 5.5, and a Z average molecular weight of less than about 24,000.
    Type: Grant
    Filed: November 4, 1988
    Date of Patent: January 5, 1993
    Assignee: Chevron Research Company
    Inventors: David L. Beach, Paul G. Bercik, Neal E. Morganson
  • Patent number: 4711969
    Abstract: A process for oligomerizing ethylene using a nickel ylide catalyst substituted with a sulfonato group, wherein the oligomerization is carried out in the presence of methanol and water.
    Type: Grant
    Filed: August 25, 1986
    Date of Patent: December 8, 1987
    Assignee: Chevron Research Company
    Inventors: David L. Beach, James J. Harrison
  • Patent number: 4686315
    Abstract: A process for oligomerizing ethylene using a bicomponent catalyst comprising a nickel ylide substituted with a sulfonato group and an alkyl aluminum alkoxide.
    Type: Grant
    Filed: December 12, 1986
    Date of Patent: August 11, 1987
    Assignee: Chevron Research Company
    Inventors: David L. Beach, Yury V. Kissin
  • Patent number: 4529554
    Abstract: A process is provided for preparing nickel ylides which are themselves novel compounds defined by the following Formula I: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.
    Type: Grant
    Filed: August 18, 1980
    Date of Patent: July 16, 1985
    Assignee: Gulf Research & Development Company
    Inventors: David L. Beach, James J. Harrison
  • Patent number: 4507247
    Abstract: There are provided novel sulfonated Group Va ylides defined by the following Formula I: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.
    Type: Grant
    Filed: February 25, 1983
    Date of Patent: March 26, 1985
    Assignee: Gulf Research & Development Company
    Inventors: David L. Beach, James J. Harrison
  • Patent number: 4394322
    Abstract: There are provided novel Group VA ylides defined by the following Formula I: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.
    Type: Grant
    Filed: November 25, 1980
    Date of Patent: July 19, 1983
    Assignee: Gulf Research & Development Company
    Inventors: David L. Beach, James J. Harrison
  • Patent number: 4382153
    Abstract: Ethylene is oligomerizied by reacting ethylene under an elevated pressure greater than about 700 pounds per square inch gauge (4826 kPa) in methanol in contact with a nickel ylide defined by the following Formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.
    Type: Grant
    Filed: April 5, 1982
    Date of Patent: May 3, 1983
    Assignee: Gulf Research & Development Company
    Inventors: David L. Beach, James J. Harrison
  • Patent number: 4381414
    Abstract: A fuel having reduced tendency to particulate dissemination under shock comprising a liquid hydrocarbon jet aviation fuel of flash point at least 90.degree. F. (32.2.degree. C.) containing dissolved atactic polypropylene.
    Type: Grant
    Filed: May 6, 1981
    Date of Patent: April 26, 1983
    Assignee: Gulf Research & Development Company
    Inventors: David L. Beach, Charles M. Selwitz