Patents Represented by Attorney, Agent or Law Firm Donald R. Johnson
  • Preparation of 1,1-dimethoxycyclohexane
    Patent number: 4652344
    Abstract: Dimethoxycyclohexane, prepared by reacting cyclohexanone with methanol, may be recovered from the product mixture in substantially pure form by first adding water as an azeotropic agent to said mixture to form an azeotrope with unreacted cyclohexanone, removing said azeotrope by distillation, thereby leaving substantially pure dimethoxycyclohexane.
    Type: Grant
    Filed: December 2, 1985
    Date of Patent: March 24, 1987
    Assignee: Sun Refining and Marketing Company
    Inventors: Chao-Yang Hsu, Paul E. Ellis, Jr.
  • Calcium-tolerant N-substituted acrylamides as thickeners for aqueous systems
    Patent number: 4649183
    Abstract: A water-soluble, charged, random copolymer of acrylamide and an alkali metal salt of an acrylamido-alkanoic acid such as alkali metal 3-acrylamido-3-methylbutanoate, having an average molecular weight of greater than about 50,000, has been found to maintain unusually stable and effective viscosities in the presence of salts such as NaCl and CaCl.sub.2 when added to water in minor amounts, thus making it a highly effective mobility control agent for secondary and tertiary oil recovery methods. Also within the scope of the invention are the acid form of the polymer, as well as terpolymers which additionally contain olefinically unsaturated monomers such as acrylic acid or sodium acrylate.
    Type: Grant
    Filed: December 10, 1985
    Date of Patent: March 10, 1987
    Assignee: University of Southern Mississippi
    Inventors: Charles L. McCormick, Kenneth P. Blackmon
  • Use of perfluorobromoalkyl ethers as X-ray contrast agents
    Patent number: 4640833
    Abstract: Method of X-raying animals using as a contrast agent a perfluorobromoalkyl ether of the formula C.sub.m F.sub.2m+1 OC.sub.n F.sub.2n Br where m and n independently are integers of from 2 to 6, wherein the ether is used either neat or in an aqueous dispersion such as an emulsion.
    Type: Grant
    Filed: March 11, 1985
    Date of Patent: February 3, 1987
    Assignees: Adamantech, Inc., Children's Hospital Research Foundation
    Inventors: Christ Tamborski, Leland C. Clark, Jr.
  • Catalyst and process for production of cinnamates
    Patent number: 4620027
    Abstract: A method of preparing esters of cinnamic acid comprising catalytically reacting a styrene compound with carbon monoxide, oxygen, and an aliphatic alcohol. The catalyst is a combination of a palladium (II) compound, an alkali metal carboxylate and a copper salt.
    Type: Grant
    Filed: December 21, 1984
    Date of Patent: October 28, 1986
    Assignee: Sun Refining and Marketing Company
    Inventor: Chao-Yang Hsu
  • Ruthenium-cobalt carbonyl metal cluster catalysts for the dealkoxyhydroxymethylation of acetals to form glycol ethers
    Patent number: 4618729
    Abstract: The ruthenium-cobalt carbonyl metal cluster catalyst Co.sub.2 Ru(CO).sub.11 effectively catalyzes the dealkoxyhydroxymethylation of aldehyde acetals to form glycol monoethers. Methylal, for example, may be reacted with syngas, i.e., CO and H.sub.2, in the presence of this ruthenium-cobalt cluster catalyst to form the monomethyl ether of ethylene glycol.
    Type: Grant
    Filed: October 2, 1985
    Date of Patent: October 21, 1986
    Assignee: Sun Refining and Marketing Company
    Inventors: D. Michael Duggan, James E. Lyons, Harry K. Myers, Jr.
  • Ruthenium-cobalt carbonyl catalysts for the dealkoxyhydroxymethylation of aldehyde acetals to form glycol ethers
    Patent number: 4617287
    Abstract: Ruthenium carbonyl-cobalt carbonyl catalyst mixtures effectively catalyze the dealkoxyhydroxymethylation of aldehyde acetals, wherein said acetal may be prepared separately or in situ from an aldehyde and an alcohol. Methylal, for example, may be reacted with syngas, i.e., CO and H.sub.2, in the presence of this ruthenium carbonyl-cobalt carbonyl catalyst to form the monomethyl ether of ethylene glycol.The invention also is directed to the ruthenium carbonyl-promoted cobalt carbonyl catalysts per se, including novel precipitated forms of these ruthenium-cobalt carbonyl catalyst mixtures.
    Type: Grant
    Filed: October 2, 1985
    Date of Patent: October 14, 1986
    Assignee: Sun Refining and Marketing Company
    Inventor: James E. Lyons
  • Process for the production and purification of diethoxymethane by azeotropic distillation
    Patent number: 4613411
    Abstract: Diethoxymethane (ethylal), prepared by reacting formaldehyde with ethanol, may be recovered from the product mixture in substantially pure form by first distilling off an azeotrope comprising ethanol and diethoxymethane, adding a selected solvent to the azeotrope which will form an azeotrope with the ethanol, distilling off said latter azeotrope and recovering the substantially pure diethoxymethane.
    Type: Grant
    Filed: December 2, 1985
    Date of Patent: September 23, 1986
    Assignee: Sun Refining and Marketing Company
    Inventors: Chao-Yang Hsu, Paul E. Ellis, Jr.
  • Process for the oxidation of butenes to linear acetates
    Patent number: 4602103
    Abstract: C.sub.4 olefins comprising cis- and trans-butane-2 and butene-1 may be oxidized to their corresponding mono- and diacetates in the presence of acetic acid and an olefin-activated palladium catalyst under mild conditions. With this catalyst, and depending in part upon the solvent employed, as well as other operating conditions, the formation of linear allylic 1-acetates over the corresponding branched compounds can be favored in order to increase the yield of the corresponding linear 1,4-diacetates. The latter, in turn, may then be converted, for example, to butanediol by known hydrogenation methods.In a similar manner, isobutylene may be converted to a dialcohol.
    Type: Grant
    Filed: April 10, 1985
    Date of Patent: July 22, 1986
    Assignee: Sun Refining and Marketing Company
    Inventor: James E. Lyons
  • Catalytic oxidation of propylene to allyl acetate
    Patent number: 4602104
    Abstract: Propylene is oxidized directly to allyl acetate in the presence of acetic acid with air or oxygen in the liquid phase under moderate reaction conditions employing a palladium-on-carbon catalyst which has been pre-treated by activating it with propylene at temperatures of greater than about 50.degree. C., preferably from 60.degree. to 150.degree. C., for a period of time sufficient to form a small but perceptible quantity of said activated catalyst, preferably for at least 10 minutes in the substantial absence of oxygen.
    Type: Grant
    Filed: April 10, 1985
    Date of Patent: July 22, 1986
    Assignee: Sun Refining and Marketing Company
    Inventors: James E. Lyons, George Suld
  • Extraction of aromatics with ethyl acetoacetate
    Patent number: 4594148
    Abstract: This invention relates to an energy efficient process for the solvent extraction of aromatic hydrocarbons from hydrocarbon streams containing the same, using as the solvent ethyl acetoacetate. This solvent may be recovered from the aromatics by cooling the aromatic/solvent mixture, whereby separation takes place without distillation.
    Type: Grant
    Filed: February 13, 1985
    Date of Patent: June 10, 1986
    Assignee: Sun Refining and Marketing Company
    Inventor: Peter Hosler
  • Calcium-tolerant N-substituted acrylamides as thickeners for aqueous systems
    Patent number: 4584358
    Abstract: A water-soluble ionically-charged random copolymer of acrylamide and an alkaline or alkali metal 3-acrylamido-3-methylbutanoate having an average molecular weight of greater than about 50,000 has been found to maintain unusually stable and effective viscosities in the presence of salts such as NaCl and CaCl.sub.2 when added to water in minor amounts, thus making it a highly effective mobility control agent for secondary and tertiary oil recovery methods. Also within the scope of the invention are terpolymers which additionally contain olefinically unsaturated monomers such as acrylic acid or sodium acrylate.
    Type: Grant
    Filed: June 12, 1985
    Date of Patent: April 22, 1986
    Assignee: University of Southern Mississippi
    Inventors: Charles L. McCormick, Kenneth P. Blackmon
  • Catalyst and process for hydroformylation of olefins
    Patent number: 4575564
    Abstract: Olefins are hydroformylated with syngas in the presence of a novel organo metallic complex catalyst to form the corresponding aldehydes at high reaction rates and improved selectivity of linear aldehydes over branched aldehydes.The novel catalyst comprises an organo metallic complex formed from a mixture of:(1) a platinum (II) compound;(2) a ferrocene-derived ligand; and(3) a Group IVB metal halide.
    Type: Grant
    Filed: March 1, 1985
    Date of Patent: March 11, 1986
    Assignee: Sun Refining and Marketing Company
    Inventor: Chao-Yang Hsu
  • Extraction of aromatics with N-cyclohexyl-2-pyrrolidone
    Patent number: 4569755
    Abstract: This invention relates to a low energy process for the solvent extraction of aromatic hydrocarbons from hydrocarbon streams containing the same, using as the solvent N-cyclohexyl-2-pyrrolidone together with small amounts of water. This solvent may be recovered from the aromatics by cooling the aromatic/solvent mixture, and adding water, whereby separation takes place without distillation. The solvent may then be separated from the water by heating the solvent/water mixture.
    Type: Grant
    Filed: February 14, 1985
    Date of Patent: February 11, 1986
    Assignee: Sun Refining and Marketing Company
    Inventors: Thomas J. McGinley, Peter Hosler
  • Preparation of a gel having gas transporting capability
    Patent number: 4569784
    Abstract: An inert, water-immiscible inert organic liquid having gas transport properties, water and a suitable emulsifying agent are formed into a stable gel by emulsifying a mixture of the same, concentrating the emulsion to form a gel phase and a liquid phase, and separating the two phases. The resulting gel can be used as an ointment or cosmetic for skin irritations or wounds, or as a coating in industrial applications where extended contact of a surface with a gas, such as oxygen, is desired. Fluorocarbons or low viscosity silicone oils are suitable organic liquid components of the gels.
    Type: Grant
    Filed: October 20, 1981
    Date of Patent: February 11, 1986
    Assignee: Adamantech, Inc.
    Inventor: Robert E. Moore
  • Hydroformylation catalyst and process
    Patent number: 4564711
    Abstract: Olefins are hydroformylated with syngas in the presence of a novel organo metallic complex catalyst to form the corresponding aldehydes at high reaction rates and improved selectivity of linear aldehydes over branched aldehydes.The novel catalyst comprises an organo metallic complex formed from a mixture of:(1) platinum (II) acetylacetonate;(2) a Group IVB metal halide; and(3) a bidentate tertiary ligand of the formula ##STR1## wherein Q is arsenic, antimony, or phosphorus; and R.sub.1, R.sub.2 R.sub.3 and R.sub.4 are alkyl, alkoxyl, aryl, or aryloxyl groups, and may be the same or different; and m is an integer of from 3 to about 5; and n is an integer of from 2 to about 4.
    Type: Grant
    Filed: May 9, 1985
    Date of Patent: January 14, 1986
    Assignee: Sun Refining And Marketing Company
    Inventors: Chao-Yang Hsu, Paul E. Ellis, Jr.
  • Hydroformylation catalyst and process
    Patent number: 4551559
    Abstract: Olefins are hydroformylated with syngas in the presence of a novel organo metallic complex catalyst to form the corresponding aldehydes at high reaction rates and improved selectivity of linear aldehydes over branched aldehydes.The novel catalyst comprises an organo metallic complex formed from a mixture of:(1) platinum (II) acetylacetonate;(2) a Group IVB metal halide; and(3) a bidentate tertiary ligand of the formula ##STR1## wherein Q is arsenic, antimony, or phosphorus; and R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are alkyl, alkoxyl, aryl, or aryloxyl groups, and may be the same or different.
    Type: Grant
    Filed: May 9, 1985
    Date of Patent: November 5, 1985
    Assignee: Sun Refining and Marketing Company
    Inventors: Chao-Yang Hsu, Paul E. Ellis, Jr.
  • Apparatus for automated less-than-truck load shipments
    Patent number: 4545710
    Abstract: A knock-down support system for standard-sized containers which enables the containers to be automatically handled on rails, hangers or the like for routing, loading and unloading onto trucks.
    Type: Grant
    Filed: July 29, 1982
    Date of Patent: October 8, 1985
    Assignee: Sun Carriers, Inc.
    Inventor: Peter S. Hepp
  • Platinum (O) complex-based hydroformylation catalyst
    Patent number: 4542242
    Abstract: Olefins are hydroformylated with syngas in the presence of a novel organometallic complex catalyst to form the corresponding aldehydes at high reaction rates and improved selectively of linear aldehydes over branched aldehydes.The novel catalyst comprises an organometallic complex formed from a mixture of(1) a platinum (O) complex containing two bidentate diphosphine, diarsine or distibine ligands; and(2) A Group IVB metal halide.
    Type: Grant
    Filed: January 30, 1985
    Date of Patent: September 17, 1985
    Assignee: Sun Refining and Marketing Company
    Inventors: Chao-Yang Hsu, James E. Lyons, Paul E. Ellis, Jr.
  • Hydroformylation catalyst and process
    Patent number: 4542119
    Abstract: Olefins are hydroformylated with syngas in the presence of a novel organo metallic complex catalyst to form the corresponding aldehydes at high reaction rate and improved selectivity of linear aldehydes over branched aldehydes.The novel catalyst comprises an organo metallic complex formed from a mixture of:(1) platinum (II) acetylacetonate;(2) a Group IVB metal halide; and(3) a bidentate tertiary ligand of the formulaR.sub.1 R.sub.2 Q(CH.sub.2).sub.m QR.sub.3 R.sub.4 ; or ##STR1## wherein Q is arsenic, antimony, or phosphorus; and R.sub.1,R.sub.2,R.sub.3 and R.sub.4 are alkyl, alkoxyl, aryl, or aryloxyl groups, and may be the same or different; and m is an integer of from 3 to about 5; and n is an integer of from 2 to about 4.
    Type: Grant
    Filed: April 11, 1984
    Date of Patent: September 17, 1985
    Assignee: Sun Tech, Inc.
    Inventors: Chao-Yang Hsu, Paul E. Ellis, Jr.
  • Hydroformylation catalyst and process
    Patent number: 4542120
    Abstract: Olefins are hydroformylated with syngas in the presence of a novel organo metallic complex catalyst to form the corresponding aldehydes at high reaction rates and improved selectivity of linear aldehydes over branched aldehydes.The novel catalyst comprises an organo metallic complex formed from a mixture of:(1) platinum (II) acetylacetonate;(2) a Group IVB metal halide; and(3) a bidentate tertiary ligand of the formula ##STR1## wherein Q is arsenic, antimony, or phosphorus; and R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are alkyl, alkoxyl, aryl, or aryloxyl groups, and may be the same or different.
    Type: Grant
    Filed: April 11, 1984
    Date of Patent: September 17, 1985
    Assignee: Sun Tech, Inc.
    Inventors: Chao-Yang Hsu, Paul E. Ellis, Jr.