Patents Represented by Attorney, Agent or Law Firm Russell R. Stolle
  • Patent number: 5146030
    Abstract: An improved process is disclosed for preparing synthetic lubricant base stocks. Synthetic lubricant base stocks are prepared in good yield by oligomerizing linear olefins using cation-exchangeable layered clays that have been treated with a non-halogenated titanium salt or non-halogenated zirconium salt.
    Type: Grant
    Filed: July 22, 1991
    Date of Patent: September 8, 1992
    Assignee: Texaco Chemical Company
    Inventors: John R. Sanderson, John F. Knifton, Edward T. Marquis
  • Patent number: 5146023
    Abstract: A process is disclosed for preparing synthetic lubricant base stocks having improved properties. Synthetic lubricant base stocks may be prepared in good yield by oligomerizing linear olefins using certain acidic calcium montmorillonite clay catalysts. When a mixture of alpha and internal-olefins having up to 50 wt. % internal-olefin is used, and the oligomers prepared therefrom are hydrogenated, a synthetic lubricant base stock having a higher viscosity index and a lower pour point is prepared.
    Type: Grant
    Filed: April 30, 1990
    Date of Patent: September 8, 1992
    Assignee: Texaco Chemical Company
    Inventors: John R. Sanderson, Edward T. Marquis
  • Patent number: 5120891
    Abstract: An improved process is disclosed for preparing synthetic lubricant base stocks. Synthetic lubricant base stocks are prepared in good yield by oligomerizing linear olefins using a catalyst comprising a super-dealuminated Y-zeolite.
    Type: Grant
    Filed: September 26, 1990
    Date of Patent: June 9, 1992
    Assignee: Texaco Chemical Company
    Inventors: John R. Sanderson, Pei S. E. Dai, John F. Knifton
  • Patent number: 5105037
    Abstract: A process is disclosed for preparing synthetic lubricant base stocks having improved properties. Synthetic lubricant base stocks may be prepared in good yield by oligomerizing linear olefins using certain acidic calcium montmorillonite clay catalysts. When a mixture of propylene and long-chain alpha-olefin is used, in which up to about 20 wt. % of the mixture comprises propylene, and the co-oligomers prepared therefrom are hydrogenated, a synthetic lubricant base stock having a lower pour point and a higher viscosity index is prepared.
    Type: Grant
    Filed: May 14, 1990
    Date of Patent: April 14, 1992
    Assignee: Texaco Chemical Company
    Inventors: John R. Sanderson, Edward T. Marquis
  • Patent number: 5097087
    Abstract: A process is disclosed for preparing synthetic lubricant base stocks having a high dimer to trimer ratio from long-chain olefins. These synthetic lubricant base stocks are prepared in good yield by dimerizing linear olefins using a catalyst comprising a fluorocarbonsulfonic acid polymer on an inert support.
    Type: Grant
    Filed: October 15, 1990
    Date of Patent: March 17, 1992
    Assignee: Texaco Chemical Company
    Inventors: John R. Sanderson, Yu-Hwa Sheu
  • Patent number: 5097085
    Abstract: An improved process is disclosed for preparing synthetic lubricant base stocks. Synthetic lubricant base stocks are prepared in good yield by oligomerizing linear olefins using montmorillonite clays which have a phosphorous-containing acid deposited thereon.
    Type: Grant
    Filed: July 12, 1990
    Date of Patent: March 17, 1992
    Assignee: Texaco Chemical Company
    Inventors: John R. Sanderson, John F. Knifton
  • Patent number: 5053569
    Abstract: A process is disclosed for preparing synthetic lubricant base stocks. Synthetic lubricant base stocks may be prepared in good yield by oligomerizing linear olefins using certain acidic calcium montmorillonite clay catalysts. When the oligomers are hydrogenated, they provide a synthetic lubricant base stock having excellent properties.
    Type: Grant
    Filed: March 28, 1990
    Date of Patent: October 1, 1991
    Assignee: Texaco Chemical Company
    Inventors: Edward T. Marquis, John R. Sanderson, John F. Knifton
  • Patent number: 5030791
    Abstract: A process is disclosed for preparing synthetic lubricant base stocks having improved properties. Synthetic lubricant base stocks may be prepared in good yield by oligomerizing linear olefins using certain acidic calcium montmorillonite clay catalysts. When a mixture of 1,3-di-isopropenyl benzene and long-chain alpha-olefin is used, in which up to about 20 wt. % of the mixture comprises 1,3-di-isopropenyl benzene, and the co-oligomers prepared therefrom are hydrogenated, a synthetic lubricant base stock having a lower pour point and a higher viscosity is prepared.
    Type: Grant
    Filed: May 21, 1990
    Date of Patent: July 9, 1991
    Assignee: Texaco Chemical Company
    Inventors: John R. Sanderson, Edward T. Marquis