Abstract: Blended gasolines are produced by the mixing of a butane-pentane rich component, a natural gasoline component, and a toluene component. The mix is weathered during the blending operation to remove light-weight hydrocarbons comprising two, three and four-carbon components. The light-weight hydrocarbons, which preferably constitute less than 3 percent of the blended gasoline, can be recovered to generate power to run the process. The liquid gasoline mixture is formulated to produce a desired octane rating, an environmentally acceptable vapor pressure, and a mix which, when burned in an internal combustion engine, produces a minimum amount of pollutants.
Abstract: The benzene content in a gasoline pool is reduced by a process that hydrogenates a benzene-containing isomerization zone feedstream. In addition to reducing the benzene concentration, the hydrogenation zone is also used to heat the isomerization zone feed and thereby eliminate the need for an isomerization zone heater. The process employs mild saturation conditions which eliminates hydrocracking and prevents the loss of isoparaffin yield. Additional cyclic hydrocarbons produced by the saturation of benzene can be processed in the isomerization zone for ring opening to increase the available paraffinic feedstock or the isomerization zone can be operated to pass the cyclic hydrocarbons through to a product recovery section.
Type:
Grant
Filed:
December 29, 1989
Date of Patent:
March 26, 1991
Assignee:
UOP
Inventors:
Chi-Chu D. Low, Visnja A. Gembicki, Robert S. Haizmann
Abstract: Compounds of the formula: ##STR1## are useful as anti-cancer, anti-obesity, anti-diabetic, anti-coronary agents, anti-aging agents, anti-hypolipidemic agents and anti-autoimmune agents.
Abstract: Cosmetic and pharmaceutical compositions and methods comprising delivery systems for the controlled release and enhanced penetration of biologically active materials (e.g., Vitamin A) to the skin. The delivery systems comprise cholesteric liquid crystals wherein the active material is retained within the lamellar molecular structure (i.e., between the molecular sheets) of the cholesteric liquid crystal.
Type:
Grant
Filed:
December 11, 1987
Date of Patent:
March 12, 1991
Assignee:
Estee Lauder Inc.
Inventors:
Gheorghe Cioca, James A. Hayward, Manuel L. Tan, Morris Herstein, Walter P. Smith
Abstract: A process for preparing hydrocarbons having at least two carbon atoms by bringing a methane-containing gas maintained at a temperature of 500 to 1500.degree. C. into contact with an oxygen-containing gas in the presence of a catalyst to effect oxidative coupling, using a catalyst comprising (1) a single-crystal, high-purity, and ultra-fine powdery magnesium oxide obtained by the gas-phase method, and (2) an alkali metal oxide.
Abstract: A method for the production of a monoalkenylated benzene is disclosed. In this method an alkylbenzene is reacted with a C.sub.4 to C.sub.5 conjugated diene in a fixed catalyst bed containing a supported alkali metal catalyst. A monoalkenylated reaction product is produced and is separated from the reactants.
Abstract: Catalyst systems, methods to improve a catalyst system, and dimerization processes therewith are provided. Catalyst systems which comprise at least one elemental alkali metal supported on an alkali metal carbonate catalyst support, are contacted with a liquid organic solvent in order to improve the isomer ratio of the desired reaction product(s) to undesired product(s).
Abstract: A process is described for the gas-phase condensation of natural gas or methane into gasoline-range hydrocarbons comprising the steps of: (a) reacting a mixture of methane and acetylene in the presence of a solid superacid catalyst to form isobutene, and (b) converting the isobutene product into gasoline-range hydrocarbons in the presence of a crystalline silicate zeolite catalyst.
Abstract: Various halogenated aromatic compounds, particularly polychlorinated biphls, and the like, are dehalogenated by reaction with alkali metal in the presence of liquid hydrosiloxane. A selected solvent or diluent may be present. The alkali metal halide reaction product may be removed by washing. It has been found substantially complete dehalogenation is achieved readily at ambient temperatures when the hydrosiloxane is present. The dehalogenated aromatic moiety normally is recovered intact. This method has been found very effective in the destruction and removal of PCB contaminants.
Type:
Grant
Filed:
March 16, 1989
Date of Patent:
November 27, 1990
Assignee:
National Research Council Canada/Conseil national de recherches Canada
Inventors:
David Griller, Jalal A. Hawari, Derek J. McPhee
Abstract: Cofeeding butylenes with amylenes in a catalytic oxidative dehydrogenation reaction substantially improves the conversion of the amylenes. The approved amylene conversion is obtained by the oxidative dehydrogenation of mixtures of amylenes and from 10 to 95 mole % butylenes.
Abstract: Alkenyl-substituted benzene derivatives are produced by oxidatively coupling at elevated temperature a benzene having at least one activated saturated hydrocarbyl substituent in vapor form with a gaseous paraffinic hydrocarbon in the presence of a gaseous oxidant and as catalyst therefor a binary metallic or multimetallic composition capable of oxidatively coupling methane.
Abstract: An alkyl-substituted hydrocarbon is prepared by alkylating an alkyl aromatic hydrocarbon having at least one hydrogen atom at an alpha-position in a side chain with an olefin in the presence of a solid base which is obtainable by heating an alumina, an alkali metal hydroxide and an alkali metal hydride or an alumina containing at least 1.3% by weight of water and an alkali metal hydride in an inert gas atmosphere at a temperature of 200.degree. to 800.degree. C. as a catalyst.
Abstract: Aliphatic C.sub.2 to C.sub.12 hydrocarbon(s) are converted to olefin(s) and/or aromatic(s) in the presence of an essentially non-acidic Group VIII metal species-containing zeolite MCM-22 catalyst.
Abstract: A process for the production of 2,6-diisopropylnaphthalene is disclosed wherein an isopropylation reaction mixture containing isopropylated naphthalenes is subjected to transalkylation with a triisopropylnaphthalene-containing mixture to obtain a mixture containing mono-, di- and tri-isopropylnaphthalenes which is then separated into a first fraction containing monisopropylnaphthalenes, a second fraction containing diisopropylnaphthalenes and a third fraction containing triisopropylnaphthalenes. The first and third fractions are recycled to the above system, while the second fraction is subjected to separation treatments for the recovery of 2,6-diisopropylnaphthalene. The second fraction from which 2,6-diisopropylnaphthalene has been removed is subjected to transalkylation with naphthalene to obtain a monoisopropylnaphthalene-rich mixture which is to be fed to the isopropylation step.
Abstract: Long-acting androgenic compositions comprising C.sub.4 -C.sub.6 cycloalkyl carboxylic acids of testosterone and a pharmaceutically acceptable carrier medium. The ester can be dissolved in an acceptable oily medium or suspended in an aqueous medium in the form of micronised particles or in the form of milled particles.
Type:
Grant
Filed:
August 26, 1987
Date of Patent:
August 14, 1990
Inventors:
Sydney Archer, Gabriel Bialy, Richard P. Blye, Pierre Crabbe, deceased, by Lucie Crabbe, executor, Egon R. Diczfalusy, Carl Djerassi, Josef Fried, Hyun K. Kim
Abstract: A mercury and formaldehyde free histological fixative. The fixative employs standard non-toxic components comprising one or more alkanols, one or more diols and triols such as ethylene glycol, and one or more acids such as acetic and formic acid in an aqueous solution. A salt of a metal ion having an oxidation state of at least two may be added as an optional mordant. Osmotically active substances such as sodium chloride may be used as an option as desired to control osmotically induced cell volume changes.
Abstract: A process for preparing mono-olefins by catalytic oxidative dehydrogenation of e.g. ethane, propane or butanes is provided. The process employs a catalyst which is capable of supporting combustion beyond the normal fuel rich limit of flammability. Preferred catalysts are platinum group metals supported on a monolith e.g. platinum.
Type:
Grant
Filed:
February 6, 1989
Date of Patent:
July 10, 1990
Assignee:
British Petroleum Company p.l.c.
Inventors:
Joseph J. Font Freide, Mark J. Howard, Trevor A. Lomas
Abstract: This invention relates to a method of treating bacterial infections with 4-oxo-4H-quinolizine-3-carboxylic acids and derivatives thereof. This invention further relates to pharmaceutical compositions that are useful in the treatment of bacterial infections.
Abstract: A process is disclosed for producing ethylbenzene from the catalytic alkylation of benzene in a multibed reactor wherein a portion of the normal overhead polyethylbenzene recycle stream is diverted into a lower section of the reactor to increase conversion and lower xylene by-product production.