Patents Represented by Attorney, Agent or Law Firm Robert Maggio
  • Process for the solubilization of mercaptobenzothiazole in a lubricating oil composition
    Patent number: 4589991
    Abstract: There is disclosed a process for the solubilization of a mercaptobenzothiazole amine salt with a solvent such as dihexyl phthalate which solubilized salt is in turn suitable for dissolution into a lubricating oil composition, such as an automatic transmission fluid, even at room temperature.
    Type: Grant
    Filed: July 1, 1985
    Date of Patent: May 20, 1986
    Assignee: Exxon Research & Engineering Co.
    Inventors: Jack Ryer, Chung Kun Shih, John E. Williams
  • Process for preparing a vanadium phosphorus oxygen catalyst composition by an organic solution method
    Patent number: 4569925
    Abstract: A process for preparing a vanadium, phosphorus oxygen containing catalyst composition capable of partially oxidizing hydrocarbons (e.g., n-butane) to form a carboxylic anhydride (e.g., maleic anhydride), and a process for using this catalyst to form such anhydrides is disclosed. The catalyst composition is prepared by an organic solution technique followed by activation in an air-hydrocarbon atmosphere.
    Type: Grant
    Filed: July 1, 1982
    Date of Patent: February 11, 1986
    Assignee: Exxon Research & Engineering Co.
    Inventors: Tai-Cheng Yang, Krishna K. Rao, I-Der Huang
  • Polyisobutylene process
    Patent number: 4558170
    Abstract: Polyisobutylene is prepared from a mixed C.sub.4 hydrocarbon feedstream using an AlCl.sub.3 --HCl catalyst system wherein the HCl is introduced separately into the feedstream to form organochloride in the feedstream. Polymer product having a very narrow molecular weight distribution is obtained over the Mn range of 700 to 3,000. Dispersants derived from this polyisobutylene exhibit substantially improved performance in lubricating oil compositions.
    Type: Grant
    Filed: September 20, 1984
    Date of Patent: December 10, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventors: Frank J. Chen, Darrell W. Brownawell
  • Two stage process for improving the catalyst life of zeolites in the synthesis of lower olefins from alcohols and their ether derivatives
    Patent number: 4554260
    Abstract: A process for improving the catalyst life of zeolites employed in the conversion of alcohols (e.g. methanol) and/or their ether derivatives (e.g., dimethyl ether) wherein a suitable zeolite is modified in a 2-stage procedure by providing a controlled low amount of a coke precursor deposit on the external surface of the zeolite, and then heating this treated zeolite in an inert gas at specifically controlled temperatures for a minimum time is disclosed. A process of employing this modified zeolite to produce lower olefins is also disclosed.
    Type: Grant
    Filed: July 13, 1984
    Date of Patent: November 19, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventors: Wim J. M. Pieters, Yoshiharu Okumura
  • Process for directly hydroxylating olefins using an osmium-halide catalyst and oxygen oxidant
    Patent number: 4533772
    Abstract: The process for hydroxylating olefins with oxygen in the presence of water, an osmium-halide (e.g., OsBr.sub.3) catalyst and transition metal containing co-catalyst (CuBr.sub.2) is disclosed.
    Type: Grant
    Filed: August 29, 1983
    Date of Patent: August 6, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventors: Robert C. Michaelson, Richard G. Austin
  • Process for hydroxylating olefins in the presence of an osmium oxide catalyst and carboxylate salt co-catalyst
    Patent number: 4533773
    Abstract: A process for hydroxylating olefins, such as ethylene or propylene, using an osmium oxide catalyst such as OsO.sub.4, a carboxylate salt co-catalyst, such as sodium acetate, and organic hydroperoxide oxidant is disclosed.
    Type: Grant
    Filed: March 22, 1984
    Date of Patent: August 6, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventors: Robert C. Michaelson, Richard G. Austin
  • Process for the synthesis of carboxylic anhydrides using a vanadium, phosphorus oxygen containing catalyst composition
    Patent number: 4517371
    Abstract: A vanadium, phosphorus oxygen containing catalyst composition capable of partially oxidizing hydrocarbons (e.g., n-butane) to form a carboxylic anhydride (e.g., maleic anhydride), a process for preparing this catalyst, and a process for using this catalyst to form such anhydrides is disclosed. The catalyst composition is prepared by an organic heterogenous technique followed by a water treatment step and activation.
    Type: Grant
    Filed: May 9, 1983
    Date of Patent: May 14, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventors: Tai-Cheng Yang, Krishna K. Rao, I-Der Huang
  • Modified zeolite catalyst composition and process for alkylating toluene with methanol to form styrene
    Patent number: 4499317
    Abstract: A modified zeolite catalyst composition and process for using the catalyst composition to alkylate toluene (or derivative thereof) with methanol to form e.g. styrene and ethylbenzene (or derivatives thereof) is disclosed. The catalyst composition is exemplified by a type X- or Y-zeolite modified with (1) at least one alkali metal selected from Cs, K, and Rb; (2) at least one metal selected from Mn, Fe, Cu, and Zn; and (3) boron and/or phosphorus.
    Type: Grant
    Filed: July 2, 1984
    Date of Patent: February 12, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventors: Huei-Cheng Liu, Ralph J. Spohn
  • Modified zeolite catalyst composition and process for alkylating toluene with methanol to form styrene
    Patent number: 4499318
    Abstract: A modified zeolite catalyst composition and process for using the catalyst composition to alkylate toluene (or derivative thereof) with methanol to form e.g. styrene and ethylbenzene (or derivatives thereof) is disclosed. The catalyst composition is exemplified by a type X- or Y-zeolite modified with (1) at least one alkali metal selected from Cs, K, and Rb; (2) at least one metal selected from Li, Ce, Cr, and Ag; and (3) boron and/or phosphorus.
    Type: Grant
    Filed: July 2, 1984
    Date of Patent: February 12, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventor: Huei-Cheng Liu
  • Process for oxidizing a carboxylic anhydride with heterogeneously prepared vanadium-phosphorus-oxygen containing catalyst composition
    Patent number: 4497958
    Abstract: A heterogeneous process for preparing a vanadium-phosphorus-oxygen containing catalyst for use in the preparation of carboxylic anhydrides is disclosed. This process employs an activation procedure in an air-hydrocarbon atmosphere.
    Type: Grant
    Filed: October 3, 1983
    Date of Patent: February 5, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventors: Tai-Cheng Yang, Krishna K. Rao, I-der Huang
  • Process for the hydroxylation of olefins using molecular oxygen, an osmium containing catalyst, a copper Co-catalyst, and an aromatic amine based promoter
    Patent number: 4496778
    Abstract: A process directed to the hydroxylation of olefins by reacting said olefins in the presence of oxygen, water, and a catalyst composition comprising (i) a catalytically active osmium containing compound, (ii) a Co-catalyst I comprising a copper containing compound such as CuBr.sub.2, and (iii) a Co-catalyst II capable of increasing the rate and/or selectivity of the hydroxylation reaction, such as pyridine is disclosed.
    Type: Grant
    Filed: October 3, 1983
    Date of Patent: January 29, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventors: Richard S. Myers, Robert C. Michaelson, Richard G. Austin
  • Process for the hydroxylation of olefins using molecular oxygen, an osmium containing catalyst, a copper co-catalyst, and a cycloaliphatic amine based promoter
    Patent number: 4496779
    Abstract: A process directed to the hydroxylation of olefins by reacting said olefins in the presence of oxygen, water, and a catalyst composition comprising (i) a catalytically active osmium containing compound, (ii) a Co-catalyst I comprising a copper containing compound such as CuBr.sub.2, and (iii) a Co-catalyst II capable of increasing the rate and/or selectivity of the hydroxylation reaction, such as 1,4-diazabicyclo [2.2.2.] octane is disclosed.
    Type: Grant
    Filed: April 26, 1984
    Date of Patent: January 29, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventors: Richard S. Myers, Robert C. Michaelson, Richard G. Austin
  • Modified zeolite catalyst composition for alkylating toluene with methanol to form styrene
    Patent number: 4483937
    Abstract: A modified zeolite catalyst composition and process for using the catalyst composition to alkylate toluene (or derivative thereof) with methanol to form e.g. styrene and ethylbenzene (or derivatives thereof) is disclosed. The catalyst composition is exemplified by a type X- or Y-zeolite modified with (1) at least one alkali metal selected from Cs, K, and Rb; (2) at least one metal selected from Li, Ce, Cr, and Ag; and (3) boron and/or phosphorus.
    Type: Grant
    Filed: April 22, 1983
    Date of Patent: November 20, 1984
    Assignee: Exxon Research & Engineering Co.
    Inventor: Huei-Cheng Liu
  • Modified zeolite catalyst composition for alkylating toluene with methanol to form styrene
    Patent number: 4483936
    Abstract: A modified zeolite catalyst composition and process for using the catalyst composition to alkylate toluene (or derivative thereof) with methanol to form e.g. styrene and ethylbenzene (or derivatives thereof) is disclosed. The catalyst composition is exemplified by a type X- or Y-zeolite modified with (1) at least one alkali metal selected from Cs, K, and Rb; (2) at least one metal selected from Mn, Fe, Cu, and Zn; and (3) boron and/or phosphorus.
    Type: Grant
    Filed: April 22, 1983
    Date of Patent: November 20, 1984
    Assignee: Exxon Research & Engineering Co.
    Inventors: Huei-Cheng Liu, Ralph J. Spohn
  • Process for hydroxylating olefins in the presence of an osmium containing catalyst and organic halogenated hydrocarbon co-catalyst
    Patent number: 4482763
    Abstract: A process for hydroxylating olefins with an organic hydroperoxide and water in the presence of an osmium containing catalyst (e.g. OsO.sub.4) and an organic halogenated hydrocarbon co-catalyst (e.g., n-butyl iodide) is disclosed.
    Type: Grant
    Filed: July 19, 1982
    Date of Patent: November 13, 1984
    Assignee: Exxon Research & Engineering Co.
    Inventors: Richard G. Austin, Robert C. Michaelson
  • Heterogeneous process for preparing vanadium phosphorus oxygen containing catalyst composition
    Patent number: 4435521
    Abstract: A heterogeneous process for preparing a vanadium-phosphorus-oxygen containing catalyst for use in the preparation of carboxylic anhydrides is disclosed. This process employs an activation procedure in an air-hydrocarbon atmosphere.
    Type: Grant
    Filed: May 24, 1982
    Date of Patent: March 6, 1984
    Assignee: Exxon Research & Engineering Co.
    Inventors: Tai-Cheng Yang, Krishna K. Rao, I-der Huang
  • Process for dehydrocoupling toluene using a modified faujasite zeolite catalyst composition
    Patent number: 4429174
    Abstract: A process for dehydrocoupling a hydrocarbon, such as toluene, using oxygen as the oxidant, in the presence of a crystalline zeolite of the faujasite structure containing a cation such as cesium, and a promoter, such as boron and/or phosphorus is disclosed.
    Type: Grant
    Filed: August 6, 1982
    Date of Patent: January 31, 1984
    Assignee: Exxon Research & Engineering Co.
    Inventors: Harry H. Teng, I-Der Huang
  • Process for the preparation of aromatic carbamates and isocyanates
    Patent number: 4415745
    Abstract: Production of aromatic polyisocyanates is achieved by a multireaction process comprising sequentially; the ammoxidation of a methylated aromatic, e.g. toluene; hydrolysis of the aromatic nitrile; conversion of the resultant amide to a carbamate; condensation with aldehyde; decomposition of the condensation product; and, recovery of the aromatic polyisocyanate.
    Type: Grant
    Filed: January 28, 1982
    Date of Patent: November 15, 1983
    Assignee: Exxon Research & Engineering Co.
    Inventors: Ji-Yong Ryu, Arthur M. Brownstein
  • Process for hydroxylating olefins using a supported osmium catalyst
    Patent number: 4413151
    Abstract: A process for hydroxylating olefins using a supported osmium catalyst such as Os.sub.3 (CO).sub.12 adsorbed on a support, such as MgO, and optionally in conjunction with a co-catalyst such as NaI, is disclosed.
    Type: Grant
    Filed: July 14, 1982
    Date of Patent: November 1, 1983
    Assignee: Exxon Research & Engineering Co.
    Inventors: Robert C. Michaelson, Richard G. Austin, Donald A. White
  • Process for the epoxidation of olefins using a group V metal co-catalyst I and a phenolic hydrocarbon co-catalyst II
    Patent number: 4410715
    Abstract: A process for epoxidizing olefins with hydrogen peroxide in the presence of a catalyst composition comprising a Group V element containing Co-catalyst I, such as diphenylarsinic acid, and a phenol containing compound having a pK.sub.a of from about 5 to about 13 as Co-catalyst II such as p-chlorophenol is disclosed.
    Type: Grant
    Filed: July 14, 1982
    Date of Patent: October 18, 1983
    Assignee: Exxon Research & Engineering Co.
    Inventors: Charles H. McMullen, Eugene E. Fehskens, Jeffrey S. Plotkin