Abstract: A process for cracking hydrocarbon feedstocks by contacting such stocks under cracking conditions with a composite catalyst comprising an improved hydrogen exchanged Y-type zeolite component and an amorphous inorganic matrix component. The use of this catalyst yields cracked naphthas of increased olefinic content for the production of lead-free high octane gasoline. Further improvement in the levels of C.sub.3 and C.sub.4 olefins can be realized by incorporating a portion of calcined rare earth exchanged Y-type zeolite into the composite catalyst.

Abstract: This invention relates to a solid curable composition formed by adding finely divided urea in amounts ranging from 10 to 70 weight percent of the composition to liquid polyene/polythiol curable systems wherein the combined polyene and polythiol contain at least 20 percent by weight of oxyethylene units. The thus formed solid compositions are readily cured by radiation, e.g., high energy ionizing radiation or U. V. radiation in the presence of a photocuring rate accelerator.

Abstract: A polished steel wheel center with hub, outward-spreading spokes, and rim; the metal having substantially the same thickness throughout; the ratio of the center diameter to the hub height being substantially 5; the center having slots intermediate the outer areas of the spokes; the center having deeply recessed lug pockets intermediate the spokes; the terminus of the rim, the bottom of the lug recesses, and the bottom of the hub being in substantially the same plane; the slots being in a plane intermediate top and bottom of the hub.

Abstract: Uranium oxide or uranium and silver oxides in combination with hydrogen or rare earth oxides are exchanged into zeolites as components of zeolite cracking catalysts to increase the olefin content of the gasoline and, thus, enhance the yield of high octane components as well as reduce the coking tendency of the catalyst.

Abstract: This invention relates to an improvement in the process of preparing porous ceramic articles which are formed by blending a composition containing a polyolefin, a ceramic filler and a plasticizer; shaping the blend; extracting the plasticizer and firing the article to remove the polyolefin. The improvement comprises soaking the extracted article in a water solution of a surfactant prior to firing which results in a substantial reduction in the number of cracked pieces when firing many pieces simultaneously.

Abstract: A throw-out lever assembly for use in a clutch mechanism of a motor vehicle and including a support and a fulcrum assembly mounted on the support. A throw-out lever is operably connected to the fulcrum assembly being adapted at one end for engagement with a clutch actuator and at its opposite end for engagement with a throw-out bearing of the clutch assembly. The fulcrum assembly includes a fulcrum member for pivotally engaging the throw-out lever between its ends. The fulcrum member is adjustably mounted on the support for selectively positioning the throw-out lever in a selected angular orientation with respect to the throw-out bearing for applying an optimum force on the throw-out bearing to disengage the clutch mechanism upon actuation of the clutch actuator.

Abstract: A curable composition comprising compatible polyene and polythiol in which both the components are derived from a hydantoin glycol. The polyene is typically a reaction product of N,N'-bis(2-hydroxyethyl) dimethylhydantoin, a diisocyanate and an unsaturated alcohol, e.g., allyl alcohol. The polythiol is typically a reaction product of N,N'-bis(2-hydroxyethyl) dimethylhydantoin and a mercapto carboxylic acid, e.g., .beta.-mercaptopropionic acid. Upon exposure to a free radical generator, e.g., actinic radiation, this polyene-polythiol composition cures to solid, insoluble, chemically resistant, cross-linked polythioether products.

Abstract: A curable composition comprising compatible polyene and polythiol in which both the components are derived from a hydantoin glycol. The polyene is typically a reaction product of N,N'-bis-(2-hydroxyethyl) dimethylhydantoin, a diisocyanate and an unsaturated alcohol, e.g., allyl alcohol. The polythiol is typically a reaction product of N,N'-bis(2-hydroxyethyl) dimethylhydantoin and a mercapto carboxylic acid, e.g., .beta.-mercaptopropionic acid. Upon exposure to a free radical generator, e.g., actinic radiation, this polyene-polythiol composition cures to solid, insoluble, chemically resistant, cross-linked polythioether products.

Abstract: The invention relates to a process for making a nickel/chromium plated automobile wheel comprising plated rim and plated center, including special electroplating procedures and apparatus; and the resulting wheel.

Abstract: A polar unsaturated polyester is photocured by irradiating (ultraviolet radiation) an admixture of a polythiol, an unsaturated polyester, and a photocuring rate accelerator. The unsaturated polyester is prepared by reacting mono- or polycarboxylic acids with mono- or polyhydric alcohols. The double bonds are furnished by any of these components. At least one of the double bonds is situated internally to the main backbone chain of the polyester. The photocure is achieved by the addition of the sulfhydryl groups of the polythiol to the reactive double bonds of the polyester.

Abstract: Certain zeolite materials have been found to be effective zeolite adsorbents-catalysts for the adsorption and conversion of sulfuric compounds to elemental sulfur. These zeolites adsorb hydrogen sulfide and sulfur oxides and promote the reaction of these materials so as to produce sulfur. These useful zeolites are the hydrogen forms of the zeolite materials and sodium exchanged hydrogen zeolites, especially mordenite. These zeolite adsorbents-catalysts are very useful for the removal of small amounts of hydrogen sulfide and sulfurous oxide from effluent streams such as effluent streams from Claus reactors.

Abstract: This invention relates to a process for imparting permanent wettability to a battery separator comprising a non-woven mat of polyolefin fiber by impregnating said battery separator with an .alpha.-olefin/.alpha.,.beta.-unsaturated acid or anhydride copolymer or terpolymer dissolved in water by reaction with a base and thereafter causing the copolymer or terpolymer to revert to a water-insoluble substantially free acid form by either heating the impregnated battery separator to drive off the base or exposing the impregnated separator to acid. Water-insoluble herein refers to aqueous media having a pH from acidic to essentially neutral.

Abstract: Faujasitic-type crystalline zeolites X and Y are produced. In one embodiment, sodium sulfide is added to the reaction mixture as a source of sodium and as a buffer. The buffering action of the sodium sulfide provides the basicity required to maintain the alumina hydrate component of the reaction mixture in solution but not a basicity whereby zeolite crystallization is retarded. In another embodiment, a nucleating mixture having the formula3-10 Na.sub.2 S: 5-15 Na.sub.2 O: 5-50 SiO.sub.2 : 0.4-4.0 Al.sub.2 O.sub.3 : 50-500 H.sub.2 Ois added to the reaction mixture to promote crystalline zeolite formation.

Abstract: High purity synthetic zeolites having open frameworks, such as offretite, uncontaminated with detectable traces of other zeolites, can be synthesized by the hydrothermal reaction of a silica source, alumina source, sodium hydroxide and/or potassium hydroxide in the presence of a zeolite nucleation slurry synthesized from a mixture of a silica source, alumina source, sodium hydroxide and/or potassium hydroxide and an organic template agent. The preferred organic template agents are the quaternary compounds wherein the central element is one from Group 5A of the Periodic Table and various conjugated aromatic compounds. The zeolite synthesis mixture itself does not contain any organic ion template agent. With this organic template agent not being required, the nucleation slurry is used to promote crystallization of the synthesis mixture to the open framework type of zeolite.

Abstract: A curable composition comprising compatible polyene and polythiol in which both the components are derived from a hydrantoin glycol. The polyene is typically a reaction product of N,N'-bis(2-hydroxyethyl) dimethylhydantoin, a diisocyanate and an unsaturated alcohol, e.g., allyl alcohol. The polythiol is typically a reaction product of N,N-'-bis(2-hydroxyethyl) dimethylhydantoin and a mercapto carboxylic acid, e.g., .beta.-mercaptopropionic acid. Upon exposure to a free radical generator, e.g., actinic radiation, this polyene-polythiol composition cures to solid, insoluble, chemically resistant, crosslinked polythioether products.