Abstract: An insoluble basic aluminum sulfate characterized by an SO.sub.3 /Al.sub.2 O.sub.3 mole ratio of from about 0.6 to about 0.4 and a particle size of from about 1 to about 10 microns is commingled with acidic silica sol to form a stable suspension which is convertible to spheroidal particles by the oil-drop method.

Abstract: Hydrocarbons are converted by contacting them at hydrocarbon conversion conditions with a sulfided acidic multimetallic catalytic composite comprising a combination of catalytically effective amounts of a platinum or palladium component, a rhodium component, a tin component, a halogen component, and a sulfur component with a porous carrier material. The platinum or palladium component, rhodium component, tin component, halogen component, and sulfur component are present in the multimetallic catalyst in amounts respectively, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % platinum or palladium metal, about 0.01 to about 2 wt. % rhodium, about 0.01 to about 5 wt. % tin, about 0.1 to about 3.5 wt. % halogen, and about 0.01 to about 1 wt. % sulfur.

Abstract: A polyfunctional phenol is polymerized utilizing a carrier catalyst comprising a palladium carboxylic acid salt in a carboxylic acid medium.

Abstract: Spring-biased longitudinally movable pin means are mounted to be engageable with circumferentially spaced recesses around the inside faces of non-pivoting casters that are, in turn, positioned under the mid-portion of a rollable service cart so as to provide for an automatic braking system for such cart. Cam means provided to retract the springbiased braking pins from the caster recesses and manually operated linkage means extending from each end of the cart to connect to said cam means provide for a cart operator stationed at either end of the cart to release the braking system and thereby permit movement of the cart.

Abstract: A synergistic blend of a polyaminoalkylenephosphonate and a polyquaternary ammonium chloride compound is used as a scale control agent for recirculating water cooling equipment.

Abstract: Cyclooctyl carboxaldehydes and acetal derivatives thereof may be utilized as fragrant compositions, either alone or in admixture with other compounds.

Abstract: A hydroformylation process comprising the treatment of an unsaturated compound with carbon monoxide and hydrogen in the presence of a heterogeneous catalyst system comprising a metal selected from the group consisting of a rhenium, rhodium, cobalt, ruthenium, iridium and osmium phthalocyanine compound is disclosed.

Abstract: Metal-clad laminates in which the metal coating of the laminate is only from about 1 micron to about 20 microns in thickness are prepared by depositing a copper coating on a substrate which has been treated with a release agent, treating the upper side of the metal layer to improve the adhesive properties of the metal, thereafter bonding the metal coating to a laminate and removing the substrate to thus prepare the desired metal-clad laminate.

Abstract: A method of preparing alumina extrudate particles. Finely divided alumina is admixed with from about 2 to about 10 wt. % alumina hydrosol and sufficient water added thereto to produce a dough extrudable at less than about 150 psig. The mixture is then extruded, dried and calcined. The alumina hydrosol functions as a source of alumina as well as a binder and/or lubricant, and obviates the need of extraneous binders or lubricants. The method is particularly useful to produce extruded particles of low average bulk density.

Abstract: An improved alkylation reaction chamber for contacting acid catalysts with alkylation reactants. A heat exchanger, a plurality of baffles and a plurality of spray nozzle assemblies are disposed within a vertically positioned, elongated vessel. Acid catalyst flows upward in serpentine fashion through the vessel and alkylation reactants are sprayed into the catalyst at a plurality of elevations within the vessel. Sprays are directed in substantially all directions so that maximum utilization of the available reaction chamber volume is effectuated. Exothermic heat of reaction is removed by the heat exchanger.

Abstract: An extruded, generally J-shaped plastic welt or trim strip adapted to be sewn to a seat cover has an inverted lip portion at the tip of its short leg. The welt strip is adapted to cover both sides of a vertical, downwardly extending peripheral flange on a metal seat pan. The welt strip is retained against removal from the seat pan by the engagement of its inverted lip portion with a plurality of upwardly and inwardly directed tabs which are struck out of the material of the flange.

Abstract: A monolithic electrical resistance heater element is produced from mixing particles of a conductive carbonaceous pyropolymer that have been deposited on a refractory metal oxide with a heat unifiable ceramic, such as alumina, cordierite, spodumene, etc., and then forming a resulting rigid "honeycomb type" of semiconductive ceramic substrate. The carbonaceous pyropolymer particles are preferably formed from heating an organic pyrolyzable substance in contact with alumina particles, or other metal oxide particulates, at a temperature above about 400.degree. C.

Abstract: A method for the inhibition of metal scale formation in a hydrocarbon processing unit prior to catalyst loading and start-up comprising the steps: circulating a gas comprising a sulfiding component; heating the hydrocarbon conversion zone to at least hydrocarbon conversion temperature; and, collecting loosely bound metal scale until scale production abates. The recurring problem of catalyst bed inlet plugging is solved by removing indigenous metal scale, dust and debris and by passivating the virgin metallic surfaces before the initial start-up of a hydrocarbon processing unit.

Abstract: A control system for regulating the reaction zone temperature in a process for the acid-catalyzed reaction of an isoparaffin with an olefinic feed stream containing mixed olefins. Hydrocarbon analyzers produce process output signals which are representative of composition characteristics of the fresh olefinic feed stream and the liquid alkylate product. These process output signals are transmitted to computer/comparator means which develops an output signal as a function thereof. The computer output signal is employed to adjust the reaction zone temperature to obtain the optimum consistent with a given feed composition and desired alkylate product quality. The control system rapidly compensates for continuing changes in feed composition which, at a fixed reaction zone temperature, would otherwise adversely affect the alkylate product quality.

Abstract: Compositions for inhibiting the corrosion of metals which are contacted with water containing a chloride contaminant will comprise a mixture of a salt of a dicarboxylic acid and an aliphatic amine with a cyclic amine or a mixture of cyclic amines. The composition is exemplified by a salt of a dicarboxylic acid and oleylamine with a volatile cyclic amine comprising a mixture of pyridine, picoline, lutidine, aniline, quinoline, isoquinoline, toluidine, and heavy pyridine.

Abstract: A heat exchange method for a hydrocarbon conversion process having two reactors in series which allows efficient heat recovery and effective process control under widely varying process conditions. The hydrocarbon feed stream is divided into three streams. In the preferred embodiment, the first stream is not heat exchanged and is controlled along with the preheater heat supply by a split range controller activated in response to the temperature of the stream entering the first reactor. The second stream is heat exchanged with the effluent of the first reactor and flows at a rate controlled by its temperature after this heat exchange. The third stream is heat exchanged with the effluent of the second reactor and flows at a rate such that the total of all three streams is the desired capacity for the unit. A hydrogen recycle stream is proportionally divided between the second and third streams by a ratio control means. The second stream is combined with the third stream and passed into a preheater.

Abstract: A continuous method for regenerating deactivated catalyst particles in a regeneration zone through which the particles are downwardly movable via gravity-flow. Particles initially are introduced into a carbon-burning section, flow therefrom into a halogenation section and then into a drying section from which they are removed from the regeneration zone.

Abstract: Dehydrogenatable hydrocarbons are dehydrogenated by contacting them at dehydrogenation conditions with a nonacidic catalytic composite comprising a combination of catalytically effective amounts of a platinum or palladium component, an iridium component, a tin or lead component, and an alkali or alkaline earth component with a porous carrier material. A specific example of the nonacidic, multimetallic catalytic composite disclosed herein is a combination of a platinum component, an iridium component, a tin or lead component, and an alkali or alkaline earth component with an alumina carrier material. The amounts of the catalytically active components contained in this last composite are, on an elemental basis, 0.01 to 2 wt. % platinum, 0.01 to 2 wt. % iridium, 0.01 to 5 wt. % tin or lead, and 0.1 to 5 wt. % of the alkali or alkaline earth metal.

Abstract: A process for hydrotreating (hydroprocessing) hydrocarbons and mixtures of hydrocarbons utilizing a catalytic composite of a porous carrier material, a platinum or palladium component, an iridium component and a germanium component, in which process there is effected a chemical consumption of hydrogen. A specific example of one such catalyst is a composite of a crystalline aluminosilicate, a platinum component, an iridium component and a germanium component, for utilization in a hydrocracking process. Other hydrocarbon hydroprocesses are directed toward the hydrogenation of aromatic nuclei, the ring-opening of cyclic hydrocarbons, desulfurization, denitrification, hydrogenation, etc.

Abstract: A process for hydrotreating (hydroprocessing) hydrocarbons and mixtures of hydrocarbons utilizing a catalytic composite of a porous carrier material, a platinum or palladium component, an iridium component and a germanium component, in which process there is effected a chemical consumption of hydrogen. A specific example of one such catalyst is a composite of a crystalline aluminosilicate, a platinum component, an iridium component and a germanium component, for utilization in a hydrocracking process. Other hydrocarbon hydroprocesses are directed toward the hydrogenation of aromatic nuclei, the ring-opening of cyclic hydrocarbons, desulfurization, denitrification, hydrogenation, etc.