Abstract: Cycloalkenic compounds containing a side-chain which possesses a halogenated acetylenic linkage may be prepared by dehydrochlorinating a cycloalkenic compound containing a chloro-substituted unsaturated substituent.

Abstract: Submerged oil cooler for automotive vehicles requires only two principal parts but can provide more heat transfer at a lower pressure drop than conventional oil coolers which utilize three principal parts. In a preferred embodiment, an outer tube having a plurality of longitudinal flutes which are periodically transversely indented is press fit over an inner tube having a helically finned outer surface. The tubes are sealed at their ends so as to define an extended annular flow channel for oil between the tubes, while permitting engine coolant in which the cooler is submerged to flow through the inner tube. A modified arrangement substitutes corrugated tube for the finned inner tube with a resulting cost saving in material but with a small increase in pressure drop and a small loss in heat transfer efficiency.

Abstract: Haloalkyl esters are prepared by reacting a saturated cyclic ether with a carboxylic acid or anhydride thereof and a hydrogen halide or hydrohalic acid in the presence of a Friedel-Crafts catalyst.

Abstract: Novel flame retardant compositions of matter are exemplified by compositions of matter comprising a polymer and a poly(polyhalonorbornenylalkyl)benzene. These compositions of matter are exemplified by polyethylene and 1,4-bis(1,3,4,5,6,7,7-heptachloro-5-norbornen-2-ylmethyl)benzene.

Abstract: Substituted tetrahydropyrimidines, both mono- and disubstituted, as exemplified by 2(2-N,N-dioctylamino-2-propyl)-3-tetradecyl-1,4,5,6-tetrahydropyrimidine, are useful as additives in petroleum distillates such as gasoline.

Abstract: A process is disclosed for the conversion of a petroleum distillate charge stock containing mercaptan, olefinic and dienic compounds comprising the treatment of said petroleum distillate in an atmosphere of an oxygen-containing gas in a medium possessing a pH of from about a pH of 8 to about a pH of 14 in the presence of a catalyst comprising a 4,4',4",4'"-cobalt phthalocyanine tetrasulfonate.

Abstract: At least two gasoline streams, having dissimilar octane ratings, are admixed with a butane-rich stream, the latter for vapor pressure control. A control system is employed to regulate the quantity of a lead-containing compound and/or the relative quantities of the blend components to achieve both the target octane of the final motor fuel blend as well as the desired vapor pressure, or volatility.

Abstract: Maximum removal of asphaltic material, including high molecular weight metallic contaminants, from a hydrocarbonaceous charge stock is achieved through the utilization of a solvent extraction zone provided with direct heating facilities in an upper portion thereof.

Abstract: Dehydrogenatable hydrocarbons are dehydrogenated by contacting them, under dehydrogenation conditions, with a dehydrogenation catalyst comprising a combination of a catalytically effective amount of an alkali or alkaline earth component with a catalytic composite consisting essentially of a tin component in combination with a platinum component on a carrier material, wherein the catalytic composite is prepared by the method which comprises: (a) impregnating a high surface area porous carrier material with a solution of a complex chlorostannate (II) chloroplatinate anionic species, the solution being stabilized in contact with the carrier material with an aqueous halogen acid; and thereafter, (b) drying and calcining the impregnated carrier material. For the dehydrogenation of normal paraffin hydrocarbons, this dehydrogenation catalyst preferably contains, on an elemental basis, about 0.01 to about 2 wt. % platinum, about 0.01 to about 5 wt. % tin, and about 0.01 to about 5 wt.

Abstract: A coke-deactivated acidic bimetallic hydrocarbon conversion catalyst, which is a combination of catalytically effective amounts of a platinum or palladium component, an iridium component and a halogen component with a porous carrier material, which is free of labile sulfur and which has been deactivated by a deposition of carbonaceous material thereon during a previous contacting with a hydrocarbon charge stock at hydrocarbon conversion conditions, is regenerated by the sequential steps of: (1) burning carbon from the deactivated catalyst at a relatively low temperature with a substantially sulfur-free first gaseous mixture containing relatively small amounts of oxygen, H.sub.2 O and HCl; (2) treating the resulting catalyst at a relatively high temperature with a second gaseous mixture containing O.sub.2, H.sub.

Abstract: Coumarin compounds may be produced by the conversion of o-hydroxycinnamates or o-hydroxycinnamic acids in the presence of catalysts comprising compounds containing metals of Group VIII of the Periodic Table.

Abstract: Unsaturated carbonyl compounds, and particularly .alpha.-substituted allylic carbonyl compounds as exemplified by 3-(1-methylallyl)-2,4-pentanedione are prepared by reacting a conjugated diolefinic compound with a compound possessing an active methylene group in the presence of certain catalytic compositions of matter at a temperature of from about -20.degree. C. to about 150.degree. C. The desired products are useful as intermediates in preparing chemical compounds which possess desirable fragrances.

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

Abstract: Hydrocarbons are converted by contacting them at hydrocarbon conversion conditions with an acidic multimetallic catalytic composite comprising a combination of catalytically effective amounts of a platinum or palladium component, a rhodium component, a rhenium component, a tin component, and a halogen component with a porous carrier material. The platinum or palladium component, rhodium component, rhenium component, tin component, and halogen 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 2 wt. % rhenium, about 0.01 to about 5 wt. % tin, and about 0.1 to about 3.5 wt. % halogen.

Abstract: A method of impregnating a catalytic component on the outer surface of a carrier material is presented. The carrier material is commingled with a common solution of a precursor compound of a catalytically active metallic component and a sulfur-containing carboxylic acid whereby said component is deposited on the outer surface of the carrier material. The aforesaid solution is first aged to yield a catalyst of improved exhaust gas conversion activity.

Abstract: An adsorptive separation process for separating ethylbenzene from a feed mixture comprising ethylbenzene and a plurality of xylene isomers which process comprises contacting the feed mixture with an adsorbent comprising strontium and potassium exchanged type X or type Y zeolite, selectively adsorbing substantially all of the said xylene isomers to the substantial exclusion of the ethylbenzene and thereafter recovering high-purity ethylbenzene. A desorption step may be used to desorb the adsorbed xylene isomers. The process can be either in the liquid or vapor phase.

Abstract: Improved method of sintering a powder metal body at temperatures substantially lower than the normal sintering temperature of the metal. A body formed of powder metal particles is redox cycled by being repeatedly and alternately subjected to an oxidizing atmosphere and a reducing atmosphere. The number of redox cycles required to achieve sintering is inversely proportional to the temperature. The metal must be one which will undergo surface oxidation and reduction in the atmospheres and at the temperature used.

Abstract: Production of a low mineral content fuel by a coal liquefaction process utilizing an asphaltene-free hydrogenated coal solvent which yields as the primary product a mixture of liquid and solids, a part of which is suspended in the liquid. The suspended solids are effectively removed with minimum loss of desired product by means of a light aromatic solvent in combination with an asphaltene-free hydrogenated coal solvent.

Abstract: An adsorptive separation process for separating ethylbenzene from a feed mixture comprising ethylbenzene and a plurality of xylene isomers, which process comprises contacting the feed mixture with a crystalline aluminosilicate adsorbent comprising a sodium-type Y zeolite having a SiO.sub.2 /Al.sub.2 O.sub.3 mole ratio greater than about 4.5, selectively adsorbing substantially all of the said xylene isomers to the substantial exclusion of the ethylbenzene and recovering high-purity ethylbenzene. A desorption step may then be used to desorb the adsorbed xylene isomers. The process can be either in the liquid or vapor phase.

Abstract: An improved process for the hydrogen fluoride catalyzed alkylation of isoparaffins with olefins wherein better utilization of internal streams is achieved. Isoparaffins used as a stripping medium in the catalyst regeneration zone are reclaimed, free of a hydrogen fluoride phase, and are utilized as recycle isoparaffins to improve the quality of the alkylate product.