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).

  • Olefin polymerization
    Patent number: 5275992
    Abstract: A process is disclosed for the particle form polymerization of olefins. The process employs a titanium-containing having hydrocarbon soluble titanium components. The resulting catalyst is pretreated with an organometallic reducing agent prior to the introduction of the catalyst into the polymerization zone to give a catalyst which can be used satisfactorily in a loop reactor with lower levels of cocatalyst.
    Type: Grant
    Filed: December 7, 1992
    Date of Patent: January 4, 1994
    Assignee: Phillips Petroleum Company
    Inventors: Kent E. Mitchell, Max P. McDaniel, M. Bruce Welch, Elizabeth A. Benham, Grover W. Cone
  • Mono-1-olefin polymerization in the presence of hydrogen and a cyclopentadienyl compound
    Patent number: 5276115
    Abstract: A process for the polymerization of olefins in the presence of hydrogen comprising contacting the olefin, a cyclopentadienyl compound and a catalyst comprising a transition metal compound at polymerization conditions.
    Type: Grant
    Filed: December 14, 1992
    Date of Patent: January 4, 1994
    Assignee: Phillips Petroleum Company
    Inventors: Robert W. Bohmer, M. Bruce Welch, Kenneth L. Anderson
  • Olefin polymerization
    Patent number: 5179178
    Abstract: A process for polymerizing olefins wherin a suitable amount of a fumed refractory oxide is used to improve the flow of particulate catalyst as a slurry of that catalyst is charged to the polymerization zone.
    Type: Grant
    Filed: May 15, 1992
    Date of Patent: January 12, 1993
    Assignee: Phillips Petroleum Company
    Inventors: Elizabeth M. Stacy, M. Bruce Welch, Shirley J. Martin, Max P. McDaniel, Dale E. Pierce
  • Olefin polymerization catalyst and method for production and use
    Patent number: 5095080
    Abstract: A new highly active olefin polymerization catalyst as disclosed. The catalyst is prepared by contacting a magnesium dihalide with a halogenated titanium alkoxide to obtain a first solid, washing this first solid unit it is substantially free of soluble halogenated titanium alkoxide, then contacting the first solid with a titanium tetrachloride to yield a second solid.
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: March 10, 1992
    Assignee: Phillips Petroleum Company
    Inventors: Clifford C. Lee, M. Bruce Welch
  • Olefin oligomerization
    Patent number: 5087789
    Abstract: In accordance with this invention oligomers are produced by a process comprising contacting propylene, ethylene, or a mixture thereof in a reaction zone, under a reaction temperature within the range of about 130.degree. C. to about 300.degree. C., with a catalyst comprising a chromium component on an aluminophosphate support.
    Type: Grant
    Filed: August 23, 1990
    Date of Patent: February 11, 1992
    Assignee: Phillips Petroleum Company
    Inventors: Max P. McDaniel, M. Bruce Welch, Marvin M. Johnson
  • Olefin polymerization catalyst and method for production and use
    Patent number: 5068212
    Abstract: A new highly active olefin polymerization catalyst as disclosed. The catalyst is prepared by contacting a magnesium dihalide with a halogenated titanium alkoxide to obtain a first solid, washing this first solid until it is substantially free of soluble halogenated titanium alkoxide, then contacting the first solid with a titanium tetrachloride to yield a second solid.
    Type: Grant
    Filed: August 20, 1990
    Date of Patent: November 26, 1991
    Assignee: Phillips Ptroleum Company
    Inventors: Clifford C. Lee, M. Bruce Welch
  • Zinc aluminate double bond isomerization catalyst and process for its production
    Patent number: 4692430
    Abstract: A double bond isomerization catalyst is provided which consists essentially of zinc aluminate. A process for the double bond isomerization of olefinic feedstocks using this catalyst is also disclosed.
    Type: Grant
    Filed: June 30, 1986
    Date of Patent: September 8, 1987
    Assignee: Phillips Petroleum Company
    Inventor: M. Bruce Welch
  • Production of high (Z,Z) content 1,5,9-tetradecatriene
    Patent number: 4654461
    Abstract: Method for the production of high cis content 1,5,9-tetradecatriene is provided which comprises disproportionating 1,5-cyclooctadiene and 1-hexene in the presence of a catalyst consisting essentially of molybdenum oxide on a high purity, high surface area, high pore volume silica support. The resulting high cis content 1,5,9-tetradecatriene is a useful precursor for the preparation of gossyplure, a known insect sex attractant.
    Type: Grant
    Filed: April 14, 1986
    Date of Patent: March 31, 1987
    Assignee: Phillips Petroleum Company
    Inventors: Charles A. Drake, M. Bruce Welch
  • Zinc aluminate double bond isomerization catalyst and double bond isomerization of olefins employing said catalyst
    Patent number: 4620053
    Abstract: A double bond isomerization catalyst is provided which consists essentially of zinc aluminate. A process for the double bond isomerization of olefinic feedstocks using this catalyst is also disclosed.
    Type: Grant
    Filed: June 17, 1985
    Date of Patent: October 28, 1986
    Assignee: Phillips Petroleum Company
    Inventor: M. Bruce Welch
  • Olefin conversion
    Patent number: 4547617
    Abstract: Olefins are converted into other olefins having different numbers of carbon atoms by contact with a catalyst comprising a silica support containing molybdenum oxide and a promoting amount of a least one titaniferous agent and activated under conditions suitable for the titaniferous agent to promote the activity of molybdenum oxide and silica for the disproportionation and isomerization reaction.
    Type: Grant
    Filed: February 16, 1984
    Date of Patent: October 15, 1985
    Assignee: Phillips Petroleum Company
    Inventor: M. Bruce Welch
  • Olefin polymerization
    Patent number: 4461882
    Abstract: Catalysts effective for the polymerization of olefins at high productivity formed upon mixing (1) a solution of a titanium tetrahydrocarbyloxide or a zirconium tetrahydrocarbyloxide and an organoaluminum halide with (2) a dihydrocarbylmagnesium compound alone or admixed with a minor amount of a trialkylaluminum and (3) combining the product obtained in (2) with a metal halide selected from a silicon tetrahalide and a titanium tetrahalide. The catalyst component thus produced can be combined with an organoaluminum compound as a cocatalyst component.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: July 24, 1984
    Assignee: Phillips Petroleum Company
    Inventors: M. Bruce Welch, Richard E. Dietz, Charles E. Capshew, Joel L. Martin
  • Polymerization process using surface heat treated silica-containing catalyst base
    Patent number: 4434280
    Abstract: A silica base for a chromium olefin polymerization catalyst is subjected to a high temperature treatment as for instance by passing the silica through a flame in order to alter the surface characteristics. The chromium can be present during the flame treatment or added later. The result is a catalyst capable of giving a broader molecular weight distribution polymer which is of particular value with the silica-titania coprecipitated catalyst used in slurry olefin polymerization.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: February 28, 1984
    Assignee: Phillips Petroleum Company
    Inventors: Max P. McDaniel, M. Bruce Welch
  • Olefin polymerization
    Patent number: 4406818
    Abstract: Catalysts effective for the polymerization of olefins at high productivity formed upon mixing (1) a solution of titanium tetrahydrocarbyloxide or a zirconium tetrahydrocarbyloxide and an organoaluminum halide with (2) a dihydrocarbylmagnesium compound alone or admixed with a minor amount of a trialkylaluminum and (3) combining the product obtained in (2) with a metal halide selected from a silicon tetrahalide and a titanium tetrahalide. The catalyst component thus produced can be combined with an organoaluminum compound as a cocatalyst component.
    Type: Grant
    Filed: January 28, 1982
    Date of Patent: September 27, 1983
    Assignee: Phillips Petroleum Company
    Inventors: Joel L. Martin, M. Bruce Welch, Richard E. Dietz, Charles E. Capshew
  • Catalyst, method of producing the catalyst, and polymerization process employing the catalyst
    Patent number: 4405769
    Abstract: A transition metal compound and a metal halide compound are chemically combined to form a composition of matter. The composition of matter is rapidly mixed with a precipitating agent to form an active olefin polymerization catalyst.
    Type: Grant
    Filed: February 22, 1982
    Date of Patent: September 20, 1983
    Inventors: Charles E. Capshew, James N. Short, M. Bruce Welch, Richard E. Dietz
  • Catalyst and process of polymerization of alpha-monoolefins
    Patent number: 4397763
    Abstract: Polymerization of alpha-monoolefins employing a catalyst comprising (A) a milled admixture of a titanium halide, anhydrous magnesium or manganous chloride, optionally a Lewis base, and (B) a dihydrocarbylaluminum halide, a dihydrocarbylaluminum hydride, and an ether-alcohol.
    Type: Grant
    Filed: February 12, 1982
    Date of Patent: August 9, 1983
    Assignee: Phillips Petroleum Company
    Inventor: M. Bruce Welch
  • Surface heat treatment of silica-containing catalyst base
    Patent number: 4378306
    Abstract: A silica base for a chromium olefin polymerization catalyst is subjected to a high temperature treatment as for instance by passing the silica through a flame in order to alter the surface characteristics. The chromium can be present during the flame treatment or added later. The result is a catalyst capable of giving a broader molecular weight distribution polymer which is of particular value with the silica-titania coprecipitated catalyst used in slurry olefin polymerization.
    Type: Grant
    Filed: September 17, 1981
    Date of Patent: March 29, 1983
    Assignee: Phillips Petroleum Company
    Inventors: Max P. McDaniel, M. Bruce Welch
  • Catalyst and process of polymerization of alpha-monoolefins
    Patent number: 4330648
    Abstract: Polymerization of alpha-monoolefins employing a catalyst comprising (A) a milled admixture of a titanium halide, anhydrous magnesium or manganous chloride, optionally a Lewis base, and (B) a dihydrocarbylaluminum halide, a dihydrocarbylaluminum hydride, and an ether-alcohol.
    Type: Grant
    Filed: December 13, 1977
    Date of Patent: May 18, 1982
    Assignee: Phillips Petroleum Company
    Inventor: M. Bruce Welch
  • Catalyst, method of producing the catalyst, and polymerization process employing the catalyst
    Patent number: 4325837
    Abstract: A transition metal compound and a metal halide compound are chemically combined to form a composition of matter. The composition of matter is rapidly mixed with a precipitating agent to form an active olefin polymerization catalyst under an olefin atmosphere and prepolymer is formed on said catalyst to yield a catalyst capable of producing low fines content polymer.
    Type: Grant
    Filed: August 12, 1980
    Date of Patent: April 20, 1982
    Assignee: Phillips Petroleum Company
    Inventors: Charles E. Capshew, James N. Short, M. Bruce Welch, Richard E. Dietz
  • Catalyst and process of polymerization of alpha monoolefins
    Patent number: 4312784
    Abstract: Polymerization of alpha monoolefins employing a catalyst comprising (A) a component formed by intensive mixing (milling) of titanium halide, a Lewis base, anhydrous magnesium or manganese chloride, and an unsaturated additive, (B) trihydrocarbylaluminum and, optionally, a Lewis base, and optionally (C) a dihydrocarbylaluminum halide.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: January 26, 1982
    Assignee: Phillips Petroleum Co.
    Inventor: M. Bruce Welch
  • Catalyst and process of polymerization of alpha monoolefins
    Patent number: 4242480
    Abstract: Polymerization of alpha monoolefins employing a catalyst comprising (A) a component formed by intensive mixing (milling) of titanium halide, a Lewis base, anhydrous magnesium or manganese chloride, and an unsaturated additive, (B) trihydrocarbylaluminum and, optionally, a Lewis base, and optionally (C) a dihydrocarbyl aluminum halide.
    Type: Grant
    Filed: December 13, 1977
    Date of Patent: December 30, 1980
    Assignee: Phillips Petroleum Company
    Inventor: M. Bruce Welch