Abstract: A catalytic composite comprising a metal chelate mercaptan oxidation catalyst impregnated on a basic anion exchange resin is disclosed. The catalytic composite is particularly useful to effect the oxidation of mercaptans contained in a sour petroleum distillate.

Abstract: A method of treating a mercaptan-containing sour petroleum distillate which comprises contacting said distillate at oxidation conditions with a mercaptan oxidation catalyst, such as a metal phthalocyanine disposed on a carrier, in the presence of a substituted ammonium compound, such as a benzyldimethylalkylammonium hydroxide, and a linear ionic compound, the latter preferably comprising a saturated compound having from about 9 to about 24 carbon atoms.

Abstract: The invention comprises an improved adsorbent comprising a crystalline aluminosilicate and its method of manufacture useful in a process for separating a component from a feed mixture comprising an aqueous solution of a mixture of different components, such as a mixture of saccharides. In the process the mixture is contacted with the adsorbent, which selectively adsorbs a component from the feed mixture. The adsorbed component is then recovered by contacting the adsorbent with a desorbent material such as water to effect the desorption of the adsorbed component from the adsorbent. There is an undesirable tendency for the silicon constituent of the crystalline aluminosilicate to dissolve in the aqueous system. The improvement to the adsorbent comprises the incorporation of a binder material in the absorbent comprising a water permeable organic polymer which substantially reduces the undesirable dissolution.

Abstract: Metallic catalysts such as Group VIII metal complexes which are used in hydroformylation reaction for the production of alcohols from olefins will be found in the product mixture. The separation and recovery of these metal catalysts from the product mixture may be accomplished by treating said product mixture with a biphyllic ligand capable of forming a soluble complex with the metallic catalyst and thus can be removed from the desired product.

Abstract: A contaminating metal on cracking catalyst used for the cracking of hydrocarbons is attenuated by contacting the catalyst with a boron compound at attenuation reaction conditions. The source of the contaminating metal may be the feedstock or residual metals resulting from the synthesis of the catalyst. The passivation is effected by impregnation with an aqueous solution of a water soluble boron compound, preferably in a separate passivation zone.

Abstract: Dehydrocyclizable hydrocarbons are converted to aromatics by contacting them at hydrocarbon dehydrocyclization conditions with an attenuated superactive acidic multimetallic catalytic composite comprising a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing catalytically effective amounts of a halogen component, a silver component and a uniform dispersion a catalytically effective amount of a platinum group component which is maintained in the elemental metallic state. The platinum group, pyrolyzed rhenium carbonyl, silver and halogen components are present in the multimetallic catalyst in amounts respectively, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % platinum group metal, about 0.01 to about 5 wt. % rhenium, about 0.01 to about 5 wt. % silver and about 0.1 to about 3.5 wt. % halogen.

Abstract: Assembly apparatus for a wear resistant plastic mining screen, preferably one made out of wires formed by extruding urethane around a rigid steel core, includes a feed roll having spaced grooves for receiving elongated profile wires which define the working surface of the screen. A support rod positioning member is mounted at a welding station to frictionally receive a screen support rod on its top side and then be flipped over to position the support rod above the profile wires which pass transversely under it. A welding bar having heated fin portions on its upper and lower sides is then passed between and in contact with the support rod and the profile wires to slightly melt them. The welding bar is then quickly removed and the support rod is quickly moved downwardly against the profile wires and held until the integral joints formed at each intersection are solidified. Additional support rods are welded to the profile wires at spaced intervals until the desired screen length has been reached.

Abstract: The reaction products of glycidyl ethers, wherein the alkoxy portion contains from about 6 to about 20 carbon atoms, with alkylenediamines, N-alkyl alkylenediamines, and N-alkoxyalkyl alkylenediamines are effective carburetor detergents and reducedeposits on various components of internal combustion engines. An example is the reaction product of the glycidyl ether whose alkoxy group is a mixture of 12-14 carbon atom chains with N-tallow-1,3-propylenediamine.

Abstract: A process for the manufacture of C.sub.2 -C.sub.5 alcohols from C.sub.2 -C.sub.5 olefins by the indirect hydration method is disclosed. The process comprises the steps of (a) treating a C.sub.2 -C.sub.5 olefin in an absorption zone in admixture with a C.sub.2 -C.sub.5 alkyl hydrogen sulfate at conditions to form a C.sub.2 -C.sub.5 dialkyl sulfate; (b) treating said dialkyl sulfate in a hydrolyzing zone in admixture with a measured amount of water at conditions effecting the partial hydrolysis of said dialkyl sulfate and the formation of a C.sub.2 -C.sub.5 alkyl hydrogen sulfate and a C.sub.2 -C.sub.5 alcohol; (c) separating the alcohol; and (d) recycling the alkyl hydrogen sulfate to said absorption zone, and treating said C.sub.2 -C.sub.5 olefin in admixture therewith in accordance with step (a). The practice of this invention substantially obviates the formation of sulfuric acid and the required reconcentration thereof.

Abstract: Disclosed are a metal chelate-alkali metal hydroxide-quaternary ammonium hydroxide, catalytic composite, a method of manufacturing the catalytic composite, and a process of treating sour petroleum distillates utilizing the catalytic composite. The catalytic composite comprises a metal chelate, a quaternary ammonium hydroxide, and an alkaline metal hydroxide disposed on a molecular sieve, the alkali metal hydroxide comprising at least about 10 wt. % of the catalytic composite. The method of manufacturing the catalytic composite comprises contacting a molecular sieve with a metal chelate, a quaternary ammonium hydroxide, and a mixture of alkali metal hydroxide and at least one solvent selected from the group consisting of water and alcohols with fewer than 6 carbon atoms, the alkali metal hydroxide comprising a sufficient portion of said mixture such that said alkali metal hydroxide comprises at least about 10 wt. % of said resulting catalytic composite.

Abstract: A seat backrest having a contourable upholstered portion supported by a rigid frame portion includes means to produce a desired supporting contour in the lumbar region of the seat occupant. The contour-producing means includes a lumbar pad, a pair of link members connecting the lumbar pad to the frame, and a double threaded shaft means operable by a seated occupant from the side of the backrest for moving and holding the link members in an infinite number of fixed, generally horizontal positions forward of the frame. The position of maximum lumbar support can be adjusted vertically by pivoting the link members and lumbar pad by means of a pin which is engaged with an angled slot in a sliding plate.

Abstract: A vehicle seat suspension, of the type comprising a seat frame supported on a base frame by two spaced pairs of scissor action linkage arms, has the ends of the linkage arms connected to one of the frames wholly by pivotal connections having freedom for displacement longitudinally of the suspension and a resilient coupling connecting the one frame to one of the linkage arms to damp the transmission of vibrations between the frames in the longitudinal direction.

Abstract: Dehydrocyclizable hydrocarbons are converted to aromatics by contacting them at hydrocarbon dehydrocyclization conditions with an attenuated superactive acidic multimetallic catalytic composite comprising a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing catalytically effective amounts of a halogen component, a cadmium component and a uniform dispersion of a catalytically effective amount of a platinum group component which is maintained in the elemental metallic state. The platinum group, pyrolyzed rhenium carbonyl, cadmium and halogen components are present in the multimetallic catalyst in amounts respectively, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % platinum group metal, about 0.01 to about 5 wt. % rhenium, about 0.01 to about 5 wt. % cadmium and about 0.1 to about 3.5 wt. % halogen.

Abstract: An improved adsorbent comprising a crystalline aluminosilicate, method of manufacture of the adsorbent and improved process for separating a component from a feed mixture comprising an aqueous solution of a mixture of different components, such as a mixture of saccharides. In the process the mixture is contacted with the adsorbent, which selectively adsorbs a component from the feed mixture. The adsorbed component is then recovered by contacting the adsorbent with a desorbent material such as water to effect the desorption of the adsorbed component from the adsorbent. There is an undesirable tendency for the silicon constituent of the crystalline aluminosilicate to dissolve in the aqueous system. The improvement to the adsorbent and process comprises the incorporation of a binder material in the adsorbent comprising cellulose acetate butyrate which substantially reduces the undesirable dissolution.

Abstract: Laminated heater plate assembly is formed from a plurality of layers of glass cloth and/or glass mat and epoxy resin which are laminated together under heat and pressure. One or more thermally conductive heater members are mounted in a cut-out region(s) in a pre-cured or "C" stage laminate top portion of the assembly while a plurality of uncured or "B" stage glass mat and epoxy resin laminations are stacked, assembled under the "C" stage portion and heater portion(s), and bonded to each other into a rigid, warp-free heater plate assembly which can be repeatedly subjected to steam or hot water without damage. Preferably, the resin density after bonding in the region of the edges of the heater portion(s) and the adjacent surrounding edges of the cut-out region(s) is greater than in locations spaced further from the heater portion(s) in order to enhance the sealing of the assembly in the most critical areas thereof.

Abstract: A process for separating a selected component from a fluid mixture of components by employment of an ion exchange resin. Fluid flow is maintained through a column containing the adsorbent in at least three separation zones, an adsorption zone in which the selected component is adsorbed by the adsorbent, a purification zone and a desorption zone from which the selected component is displaced by a desorbent material. There is also a backflushing zone, upstream of either the feed or desorbent stream inlets, in which the direction of fluid flow is opposite the direction of flow through the three separation zones. The zones are periodically shifted through the column by advancing the input and output streams. The backflushing serves to decrease the density of the resin bed thereby controlling the pressure drop developed through that bed when it is in service as part of a separation zone.

Abstract: A multi-step hydrocarbon conversion process for producing gasoline from propane is disclosed. Propane is passed into a dehydrogenation zone and the entire dehydrogenation zone effluent is then passed into a catalytic condensation zone wherein propylene is converted into C.sub.6 and C.sub.9 hydrocarbons. The condensation zone effluent, a stripper overhead stream and an absorber bottoms stream are commingled and then separated into vapor and liquid portions. The liquid is passed into the stripper, and the vapor portion is contacted with stripper bottoms liquid in an absorber. The absorber overhead stream is contacted with liquid propane in a second absorber to remove C.sub.6 hydrocarbons and is then recycled to the dehydrogenation zone. Depropanizing a portion of the stripper bottoms yields the liquid propane and a gasoline product.

Abstract: A supported metal chelate catalyst, a method of preparing said catalyst, and a process of using said catalyst is disclosed. The catalyst is particularly useful in the treatment of a sour petroleum distillate or fraction to remove mercaptans contained therein. In preparing the catalyst, a solid adsorptive support is contacted with a solution of a metal chelate. The resulting composite is thereafter contacted at an elevated temperature with a substituted ammonium compound.In one embodiment, the metal chelate, cobalt phthalocyanine monosulfonate, is contacted with the adsorptive support, activated charcoal, raised to a temperature of about 100.degree. C., and then contacted with the substituted ammonium compound, dimethylbenzylalkylammonium chloride. In another embodiment, the catalyst of the invention can be contacted with a mercaptan-containing petroleum distillate in admixture with an oxidizing agent and an alkaline solution to convert the mercaptans to innocuous disulfide.

Abstract: A multiple stage contactor column for the countercurrent contact of an upwardly moving hydrocarbon phase and a downwardly moving solvent phase is disclosed. The column is particularly useful for the solvent extraction of aromatics from a hydrocarbon feedstock containing C.sub.9 aromatics. The contactor column embodies an upper extraction section comprising a first plurality of perforated extraction trays and a backwash section comprising a second plurality of perforated extraction trays, the perforations of said second plurality being of larger cross-sectional area whereby the solvent/hydrocarbon interface at the bottom of the column is more readily controlled.

Abstract: Dehydrogenatable hydrocarbons are dehydrogenated by contacting them, at hydrocarbon dehydrogenation conditions, with a novel nonacidic superactive multimetallic catalytic composite comprising a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing a uniform dispersion of catalytically effective amounts of an alkali or alkaline earth component and of a platinum group component which is maintained in the elemental metallic state during the incorporation of the rhenium carbonyl component.