Patents by Inventor Bobby R. Martin
Bobby R. Martin 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: 5637778Abstract: Disclosed is a one-step method for synthesis of methyl tertiary butyl ether, diisopropyl ether and isopropyl ether from crude streams containing acetone, methanol and t-butyl alcohol which comprises reacting an acetone-rich feed over a bifunctional catalyst comprising 5-45% by weight of a catalyst consisting essentially of a hydrogenation catalyst selected from the group consisting of one or more metals selected from the group consisting of IB, VIB or VIII of the Periodic Table and a heteropoly acid on a 55%-95% of the total weight of the catalyst of a support comprising a compound selected from the group consisting of:a. a metal phosphate;b. 5 to 95% by weight metal phosphate supported on 95 to 5 wt % Group III or IV oxide; andc. a large pore silicoaluminophosphate.Type: GrantFiled: August 8, 1994Date of Patent: June 10, 1997Assignee: Texaco Chemical Inc.Inventors: Robert J. Taylor, Jr., Pei-Shing E. Dai, John F. Knifton, Bobby R. Martin
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Patent number: 5476972Abstract: Disclosed is a one-step method for synthesis of ethers from mixtures of acetone and t-butyl alcohol which comprises reacting an acetone-rich feed over a bifunctional catalyst comprising 5%-45% by weight hydrogenation catalyst on 55%-95% of the total catalyst weight of a support comprising a zeolite and a Group III or IV oxide.Type: GrantFiled: January 28, 1994Date of Patent: December 19, 1995Assignee: Texaco Chemical Inc.Inventors: Pei-Shing E. Dai, Robert J. Taylor, Jr., John F. Knifton, Bobby R. Martin
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Patent number: 5453411Abstract: A mild hydrocracking process for the hydrodemetallation (HDM), hydrodesulfurization (HDS) and hydroconversion (HC) of hydrocarbon feedstocks such as residuum feedstocks which provides increased conversion of the 1000.degree. F.+ hydrocarbon fraction to the 1000.degree. F.- fraction and increased yields of middle distillates is disclosed. The process utilizes a catalyst comprising about 2.0 to about 6.0 wt. % of an oxide of a Group VIII metal, about 12.0 to about 25.0 wt. % of an oxide of molybdenum and 0 to about 3.0 wt. % of an oxide of phosphorus supported on a porous alumina support containing about 4.0 to about 30 wt. % of silica.Type: GrantFiled: February 22, 1994Date of Patent: September 26, 1995Assignee: Texaco Inc.Inventors: Pei-Shing E. Dai, Charles N. Campbell, II, Bobby R. Martin, Randall H. Petty
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Patent number: 5441630Abstract: Hydrodesulfurization of a cracked naphtha is effected in the presence of, as catalyst, a non-noble metal of Group VIII and a metal of Group VI-B on an alumina support containing a hydrotalcite-like composition. The process of the instant invention gives high levels of hydrodesulfurization compared to prior art magnesia-containing catalysts and lower levels of olefin saturation, and less octane reduction in the desulfurized gasoline.Type: GrantFiled: April 12, 1993Date of Patent: August 15, 1995Assignee: Texaco, Inc.Inventors: Eugene P.-S. Dai, David E. Sherwood, Jr., Bobby R. Martin, Randall H. Petty
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Patent number: 5370788Abstract: Charge waxy hydrocarbon is converted to lube oil base stock by hydrotreating in the presence of catalyst characterized by its ability to convert a waxy hydrocarbon distillate of high pour point to a hydrocarbon product of reduced pour point and high viscosity index, suitable for use as a lube oil base stock, which comprises a support containing about 2-50 w % silica and 50-98 w % alumina, bearing 2-10 w % of a non-noble Group VIII metal, as metal, metal oxide, or metal sulfide, about 8-20 w % of a Group VI-B metal, as metal, metal oxide, or metal sulfide, less than 0.5% halogen; and 0-2 w % of phosphorus, the atom ratio of Group VIII metal to Group VI-B metal being about 0.3-2:1, said catalyst being characterized by a micropore mode of about 60-130 .ANG. diameter, a Total Surface Area of about 150-300 m.sup.2 /g, a Total Pore Volume of about 0.45-0.9 cc/g and a Pore Volume of pores with pore diameter >500 .ANG. of about 0.02-0.25 cc/g.Type: GrantFiled: December 18, 1992Date of Patent: December 6, 1994Assignee: Texaco Inc.Inventors: Pei-Shing E. Dai, Joseph A. Durkin, Bobby R. Martin
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Patent number: 5342507Abstract: A mild hydrocracking process for the hydrodemetallation (HDM), hydrodesulfurization (HDS) and hydroconversion (HC) of hydrocarbon feedstocks such as residuum feedstocks which provides increased conversion of heavy hydrocarbons boiling above 1000.degree. F. into products boiling below 1000.degree. F. as well as increased yields of middle distillates is disclosed. The process utilizes a catalyst comprising about 1.0 to about 6.0 wt. % of an oxide of a Group VIII metal, about 12.0 to about 25.0 wt. % of an oxide of molybdenum and 0 to about 5.0 wt. % of an oxide of phosphorus supported on a porous support comprising precipitated alumina or silica-containing alumina and dealuminated Y-zeolite.Type: GrantFiled: April 16, 1993Date of Patent: August 30, 1994Assignee: Texaco Inc.Inventors: Pei-Shing E. Dai, Charles N. Campbell, II, Bobby R. Martin, David E. Sherwood, Jr.
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Patent number: 5320743Abstract: A mild hydrocracking process for the hydrodemetallation (HDM), hydrodesulfurization (HDS) and hydroconversion (HC) of hydrocarbon feedstocks such as residuum feedstocks which provides increased conversion of the 1000.degree. F.+ hydrocarbon fraction to the 1000.degree. F.- fraction and increased yields of middle distillates is disclosed. The process utilizes a catalyst comprising about 2.0 to about 6.0 wt. % of an oxide of a Group VIII metal, about 12.0 to about 25.0 wt. % of an oxide of molybdenum and 0 to about 3.0 wt. % of an oxide of phosphorus supported on a porous alumina support containing about 4.0 to about 30 wt. % of silica.Type: GrantFiled: May 29, 1992Date of Patent: June 14, 1994Assignee: Texaco Inc.Inventors: Pei-Shing E. Dai, Charles N. Campbell II, Bobby R. Martin, Randall H. Petty
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Patent number: 5308472Abstract: A mild hydrocracking process for the hydrodemetallation (HDM), hydrodesulfurization (HDS) and hydroconversion (HC) of hydrocarbon feedstocks such as residuum feedstocks which provides increased conversion of heavy hydrocarbons boiling above 1000.degree. F. into products boiling below 1000.degree. F. as well as increased yields of middle distillates is disclosed. The process utilizes a catalyst comprising about 1.0 to about 6.0 wt. % of an oxide of a Group VIII metal, about 12.0 to about 25.0 wt. % of an oxide of molybdenum and 0.1 to about 5.0 wt. % of an oxide of phosphorus supported on a porous support comprising precipitated alumina or silica-containing alumina and hydrogen form, acidified, dealuminated Y-zeolite.Type: GrantFiled: June 11, 1992Date of Patent: May 3, 1994Assignee: Texaco Inc.Inventors: Pei-Shing E. Dai, Charles N. Campbell, II, Bobby R. Martin, David E. Sherwood, Jr.
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Patent number: 5235067Abstract: A continuous process has been found for producing hydroxyacylated alkenyl-substituted mono- and bis- succinimides. The Mannich phenol coupled compositions are produced continuously as well. In the imidization reaction, an alkenyl succinic anhydride is contacted with a polyamine to form mono- and bis- polyamino alkenyl succinimides in continuous stirred tank reactor for a residence time of 1 to 3 hours. The reaction product is then, optionally Mannich base coupled. Finally, in the amidization, the mono- and bis- polyamino alkenyl succinimide is contacted with an acylating agent such as hydroxyacetic acid. Contacting is carried out in a continuous stirred tank reactor for a residence time of 3 to 6 hours. A hydroxyacylated alkenyl-substituted mono- and bis- succinimide product free of haze is produced in the absence of filtering, by reducing water continuously in all three reactors to a concentration of 0.4 wt %.Type: GrantFiled: November 3, 1989Date of Patent: August 10, 1993Assignee: Texaco Inc.Inventors: Billy R. Allen, Bobby R. Martin, John A. Lemen, Leonard A. Matthews
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Patent number: 5087348Abstract: A novel treated charge zeolite is prepared by treating charge zeolite (which is essentially free of Secondary Pores) with steam for 5-60 hours at 1000.degree. F.-1500.degree. F. Product is particularly characterized by increased Secondary Pore Volume (pores of diameter of 100A-600A) in amount of as high as 0.20 cc/g.Type: GrantFiled: June 19, 1991Date of Patent: February 11, 1992Assignee: Texaco Inc.Inventors: Pei-Shing E. Dai, David E. Sherwood, Jr., Bobby R. Martin
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Patent number: 5069890Abstract: A novel treated charge zeolite is prepared by treating charge zeolite (which is essentially free of Secondary Pores) with steam for 5-60 hours at 1000.degree. F.-1500.degree. F. Product is particularly characterized by increased Secondary Pore Volume (pores of diameter of 100A-600A) in amount of as high as 0.20 cc/g.Type: GrantFiled: March 18, 1991Date of Patent: December 3, 1991Assignee: Texaco Inc.Inventors: Pei-Shing E. Dai, David E. Sherwood, Jr., Bobby R. Martin