Abstract: A universal canister flush valve having a valve body configured to be fixed relative to a toilet tank and having a hollow wall defining an internal flow passage; a guide post coupled to and extending away from the valve body; a float fitted about and configured to slide relative to the guide post between a closed position and an open position, the float having an open top; and an extender that selectively couples to the open top in a first position, in which a first end of the extender is received in and coupled to the open top, and in a second position, in which a second end of the extender is received in and coupled to the open top, wherein the extender and float define a first overflow height in the first position and define a second overflow height in the second position.

Abstract: A combination of materials and processing parameters have been developed for hermetic seals for electrical feedthroughs in high performance applications. A glass-ceramic forms a hermetic seal between a stainless steel shell and a platinum-nickel-based (Pt—Ni) pin alloy for electrical feedthroughs. The glass-ceramic is processed to develop a coefficient of thermal expansion (CTE) slightly higher than the pin alloy but lower than the stainless steel. The seal system employing the new processing conditions and Pt—Ni-based pin alloy alleviates several problems encountered in previous seal systems and improves the hermetic connector performance.

Abstract: A process for reducing the loss of catalyst activity of a Ziegler-Natta catalyst is provided. The process includes preparing a Ziegler-Natta (ZN) catalyst by contacting the ZN catalyst with at least one aluminum alkyl compound to produce a reduced ZN catalyst and storing and/or transporting the reduced ZN catalyst for at least 20 days at a temperature of 25° C. or less. The reduced ZN catalyst may be used for polymerizing polyolefin polymers.

Abstract: A combination of materials and processing parameters have been developed for hermetic seals for electrical feedthroughs in high performance applications. A glass-ceramic forms a hermetic seal between a stainless steel shell and a platinum-nickel-based (Pt—Ni) pin alloy for electrical feedthroughs. The glass-ceramic is processed to develop a coefficient of thermal expansion (CTE) slightly higher than the pin alloy but lower than the stainless steel. The seal system employing the new processing conditions and Pt—Ni-based pin alloy alleviates several problems encountered in previous seal systems and improves the hermetic connector performance.

Abstract: Processes and apparatus for preparing bimodal polymers are provided. In some embodiments, processes include introducing a monomer, a first diluent, a catalyst, hydrogen, at a first hydrogen concentration, and optional comonomer, to a first loop reactor to produce, under polymerization conditions, a first slurry of polymer solids. Processes may also include continuously discharging the first slurry of polymer solids from the loop reactor as a first polymerization effluent to a first flash tank; separating the first polymerization effluent in the first flash tank to provide a first concentrated polymer slurry with significantly lower hydrogen concentration; and transferring the first concentrated polymer slurry from the flash tank to a re-slurry mixer. Processes may further include introducing a re-slurry mixer diluent to the first concentrated polymer slurry to form a second concentrated polymer slurry in the re-slurry mixer that can be pumped to a second slurry loop reactor.

Abstract: Palladium-based ternary or higher alloys include palladium at about 45-55 wt %, copper about 32-42 wt %, silver at about 8-15 wt %, rhenium at about 0-5 wt %, and optionally one or more modifying elements at up to 1.0 wt %. The alloys are age-hardenable, provide hardness in excess of 350 HK (Knoop, 100 g load), have electrical conductivities above 19.5% IACS (International Annealed Copper Standard), have an elevated temperature strength above 100 ksi at temperatures up to 480° F. (250° C.), and remain ductile (tensile elongation>2%) in their fully age-hardened condition. The alloys may be used in static and moveable electrical contact and probe applications.

Abstract: Processes and apparatus for preparing bimodal polymers are provided. In some embodiments, processes include introducing a monomer, a first diluent, a catalyst, hydrogen, at a first hydrogen concentration, and optional comonomer, to a first loop reactor to produce, under polymerization conditions, a first slurry of polymer solids. Processes may also include continuously discharging the first slurry of polymer solids from the loop reactor as a first polymerization effluent to a first flash tank; separating the first polymerization effluent in the first flash tank to provide a first concentrated polymer slurry with significantly lower hydrogen concentration; and transferring the first concentrated polymer slurry from the flash tank to a re-slurry mixer. Processes may further include introducing a re-slurry mixer diluent to the first concentrated polymer slurry to form a second concentrated polymer slurry in the re-slurry mixer that can be pumped to a second slurry loop reactor.

Abstract: A process for preparing a catalyst system including contacting one or more catalysts having a Group 3 through Group 12 metal atom or lanthanide metal atom with a methylalumoxane and one or more support material compositions to a concentration of methylalumoxane of about 4 mmol to about 15 mmol aluminum per gram of support material is provided. The support material composition may have a macroporosity of from about 0.18 cc/g to about 0.50 cc/g. In other embodiments, a process for polymerizing at least one olefin to produce a polyolefin composition including contacting one or more olefins with the aforementioned catalyst system is also provide.

Abstract: Embodiments of an invention disclosed herein relate to a process for adjusting one or more of the high load melt index (I21.6), weight average molecular weight (Mw), and molecular weight distribution (Mw/Mn) of one or more of polyolefin polymers during a polymerization reaction or adjusting the catalyst activity of the polymerization reaction, the process includes a) pre-contacting at least one chromium-containing catalyst with at least one aluminum alkyl to form a catalyst mixture outside of a polymerization reactor; b) passing the catalyst mixture to the polymerization reactor; c) contacting the catalyst mixture with one or more monomers under polymerizable conditions to form the one or more of polyolefin polymers; and d) recovering the one or more of polyolefin polymers.

Abstract: A process for reducing the loss of catalyst activity of a Ziegler-Natta catalyst is provided. The process includes preparing a Ziegler-Natta (ZN) catalyst by contacting the ZN catalyst with at least one aluminum alkyl compound to produce a reduced ZN catalyst and storing and/or transporting the reduced ZN catalyst for at least 20 days at a temperature of 25° C. or less. The reduced ZN catalyst may be used for polymerizing polyolefin polymers.

Abstract: Palladium-based ternary or higher alloys include palladium at about 45-55 wt %, copper about 32-42 wt %, silver at about 8-15 wt %, rhenium at about 0-5 wt %, and optionally one or more modifying elements at up to 1.0 wt %. The alloys are age-hardenable, provide hardness in excess of 350 HK (Knoop, 100 g load), have electrical conductivities above 19.5% IACS (International Annealed Copper Standard), have an elevated temperature strength above 100 ksi at temperatures up to 480° F. (250° C.), and remain ductile (tensile elongation>2%) in their fully age-hardened condition. The alloys may be used in static and moveable electrical contact and probe applications.

Abstract: Palladium-based ternary or higher alloys include palladium at about 45-55 wt %, copper about 32-42 wt %, silver at about 8-15 wt %, rhenium at about 0-5 wt %, and optionally one or more modifying elements at up to 1.0 wt %. The alloys are age-hardenable, provide hardness in excess of 350 HK (Knoop, 100 g load), have electrical conductivities above 19.5% IACS (International Annealed Copper Standard), have an elevated temperature strength above 100 ksi at temperatures up to 480° F. (250° C.), and remain ductile (tensile elongation >2%) in their fully age-hardened condition. The alloys may be used in static and moveable electrical contact and probe applications.

Abstract: A process and apparatus for oxidizing thiol compounds from an alkaline stream. The process includes passing a thiol rich alkaline stream and an oxygen containing gas to a low pressure oxidizing zone to oxidize at least a portion of the thiol compounds to disulfide compounds. A liquid stream comprising the alkali containing the disulfide compounds is passed through a pump to increase the pressure and form a pressurized alkaline stream. The pressurized alkaline stream and a sulfur lean liquid light hydrocarbon stream are introduced to a high pressure disulfide separation vessel to form a sulfur lean alkaline stream and a sulfur rich liquid light hydrocarbon stream.

Abstract: A process and apparatus for oxidizing thiol compounds from an alkaline stream. The process includes passing a thiol rich alkaline stream and an oxygen containing gas to a low pressure oxidizing zone to oxidize at least a portion of the thiol compounds to disulfide compounds. A liquid stream comprising the alkali containing the disulfide compounds is passed through a pump to increase the pressure and form a pressurized alkaline stream. The pressurized alkaline stream and a sulfur lean liquid light hydrocarbon stream are introduced to a high pressure disulfide separation vessel to form a sulfur lean alkaline stream and a sulfur rich liquid light hydrocarbon stream.

Abstract: Palladium-based ternary or higher alloys include palladium at about 45-55 wt %, copper about 32-42 wt %, silver at about 8-15 wt %, rhenium at about 0-5 wt %, and optionally one or more modifying elements at up to 1.0 wt %. The alloys are age-hardenable, provide hardness in excess of 350 HK (Knoop, 100 g load), have electrical conductivities above 19.5% IACS (International Annealed Copper Standard), have an elevated temperature strength above 100 ksi at temperatures up to 480° F. (250° C.), and remain ductile (tensile elongation >2%) in their fully age-hardened condition. The alloys may be used in static and moveable electrical contact and probe applications.

Abstract: A process and an apparatus for reducing the diolefin and oxygenate content of liquefied petroleum gas are disclosed. A first conduit is in fluid communication with a liquefied hydrocarbon source and a vessel. The vessel includes a solid adsorbent disposed on a support. The adsorbent is suitable for adsorbing diolefins and oxygenates. A second conduit is in fluid communication with the vessel for receiving the liquefied hydrocarbons of reduced diolefin and oxygenate content from the vessel. A steam inlet conduit is in fluid communication with a steam source and the vessel for treating the solid adsorbent containing adsorbed diolefins and oxygenates with steam to desorb the diolefins and oxygenates from the solid adsorbent. An amine absorber unit for reducing the hydrogen disulfide content of the liquefied hydrocarbon can be in fluid communication with the vessel.

Abstract: Ultra-low magnetic susceptibility, biocompatible palladium-tin, palladium-aluminum, and palladium-tantalum alloys include at least 75 at % palladium, between about 3 and 20 at % tin, aluminum, or tantalum, respectively, and one or more other additives chosen from niobium, tungsten, molybdenum, zirconium, titanium, tin for non-palladium-tin alloys, aluminum for non-palladium-aluminum alloys, or tantalum for non-palladium-tantalum alloys, up to about 22 at % total.

Abstract: Apparatuses and methods for fuel level sensing use a rotatable housing configured to rotate about an axis based on a fuel level. Within the rotatable housing is a roller ball sensor assembly including a resistive trace having a plurality of portions, a conductive trace and a conductive element. The roller ball sensor assembly is configured to provide a resistance indicative of a rotation of the rotatable housing about the axis by using the conductive element to electrically couple a portion of the plurality of portions corresponding to the resistance to the conductive trace.

Abstract: A process and an apparatus for reducing the diolefin and oxygenate content of liquefied petroleum gas are disclosed. A first conduit is in fluid communication with a liquefied hydrocarbon source and a vessel. The vessel includes a solid adsorbent disposed on a support. The adsorbent is suitable for adsorbing diolefins and oxygenates. A second conduit is in fluid communication with the vessel for receiving the liquefied hydrocarbons of reduced diolefin and oxygenate content from the vessel. A steam inlet conduit is in fluid communication with a steam source and the vessel for treating the solid adsorbent containing adsorbed diolefins and oxygenates with steam to desorb the diolefins and oxygenates from the solid adsorbent. An amine absorber unit for reducing the hydrogen disulfide content of the liquefied hydrocarbon can be in fluid communication with the vessel.

Abstract: Alloys and dental copings or abutments formed of alloys include 50-60 wt % gold, 5-14 wt % platinum, 0.1-3.0 wt % iridium and the remainder palladium. Other alloys and dental copings or abutments formed of alloys include 58 wt % gold, 10 wt % platinum, 1.0 wt % iridium, and 31 wt % palladium. The alloys are capable of withstanding temperature profiles during casting and multiple high temperature exposures of porcelain firing without excessive softening. The alloys also exhibit advantageous shear strain properties giving the alloys improved manufacturability characteristics.