Abstract: A catalyst and its use in polymerizing olefins, wherein the catalyst is prepared by contacting a support with a compound of titanium and/or vanadium.

Abstract: Interchange reactions between organosulfides and mercaptans are promoted by the use of catalysts containing Group VIB oxides. The preferred catalysts are supported phospho Group VIB oxide acids, such as phosphotungstic acid and phosphomolybdic acid. The preferred supports are moderately acidic supports that contain aluminum, such as zinc aluminate and aluminum phosphate.

Abstract: Carboxyalkyl dithiocarbamates which can be characterized by the formula ##STR1## wherein R is selected from the group consisting of alkylene radicals, wherein R' is selected from the group consisting of hydrogen and methyl and ethyl radicals, R.sup.2 is selected from the group consisting of alkylene radicals and wherein M is selected from the group consisting of ammonium and alkali metal atoms, their use as ore flotation depressants, and a process for making these novel compositions are disclosed.

Abstract: Apparatus for use in a fluid separation vessel to improve the separation of liquids of different densities which includes a tubular conduit extending upwardly a distance from a liquid outlet in the bottom of the vessel, a vertical center plate disposed across the open upper end of the tubular conduit, a pair of mutually parallel vertical side walls on opposite sides of the tubular conduit mounted perpendicular to the center plate, and a horizontal baffle plate mounted on the upper edges of the center plate and the vertical side walls.

Abstract: A method of rotationally molding hollow articles from cross-linkable polymeric material wherein the mold and molding material are simultaneously revolved about two nonparallel axes while being heated to fuse and cross-link polymeric material. When the polymeric material is partially cross-linked the mold containing the hollow article is opened at at least one location to admit heated air circulated therethrough to facilitate cross-linking of the inner portion of the molded tubular article and produce a smooth inner surface therein. Also disclosed is apparatus for performing the molding method of the invention.

Abstract: A longitudinally expansible and contractible duct characterized by the employment of a pair of expansible and contractible bellows protected by internal, thermally insulated, baffles which are slidably secured to the external shell members of the duct to accommodate differential thermal expansion both longitudinally and radially of the duct.

Abstract: Catalyst composition is provided which is prepared by impregnating high surface area, high pore volume alumina with at least one magnesium compound convertible to the oxide, and, optionally, at least one alkali metal compound which is convertible to the oxide, and/or at least one zirconium compound convertible to the oxide, then subjecting the impregnated support to an oxygen-containing atmosphere under conditions suitable to convert at least a portion of the magnesium, alkali metal and zirconium compounds to the oxide form. The resulting catalyst is an effective double bond isomerization catalyst, and also greatly enhances the disproportionation activity of disproportionation catalysts when used in combination therewith.

Abstract: 3-Hydroxytrimethylene sulfides are useful in ore flotation processes as depressants for iron, nickel, lead and/or zinc.

Abstract: Novel articles are prepared by forming or shaping protein/polymeric material blends. The resulting articles are attractive to masticating animals. Uses for such as synthetic bones and as a bait or lure are disclosed. Novel compositions as well as method for making the novel articles of the invention are also disclosed.

Abstract: Polymerization catalyst consisting essentially of treated silica support and zerovalent chromium compound is provided, as well as process for preparation and polymerization process with the invention catalyst. Silica treatment involves contacting a predominantly silica-containing support with at least one compound selected from the group consisting of Group IIA oxide or compounds convertible to the oxide form, a Group VA or VB oxide or compounds convertible to the oxide form or sulfuric acid, and calcining prior to contacting the treated support with a zerovalent chromium compound, thereby producing an active polymerization catalyst.

Abstract: The tubes in a U-tube bundle are supported by rod baffles characterized by inner and outer arcuate rod support members. Methods and apparatus for assemblint the components of the heat exchanger are also provided.

Abstract: Data points for a sinusoidal waveform are assigned 2 bit values which indicate the state of the amplitude (positive or negative) and the slope of the sinusoidal signal at the particular data point (positive or negative). The 2 bit values for a plurality of sinusoidal waveforms are compared to determine the phase misalignment between the plurality of sinusoidal waveforms.

Abstract: A highly active catalyst suitable for the polymerization of olefins and its use are disclosed, said catalyst being prepared by(1) co-comminuting an aluminum halide; at least one electron donor; a Group IVB-VIB transition metal compound; and a support base selected from the group consisting of the Group IIA and IIIA salts and the salts of the multivalent metals of the first transition series with the exception of copper to produce a coground solid;(2) extracting said coground solid with an organic liquid; and(3) separating the solid from the liquid under such conditions that at least 5 weight percent of the aluminum in the coground solid is removed.

Abstract: Polymers derived by copolymerizing a hydrophilic vinyl monomer, such as acrylic acid, with at least one hydrophobic vinyl monomer, such as an acrylic acid ester, a methacrylic acid ester, a vinyl ester of a saturated monocarboxylic acid having from 1 to 3 carbon atoms, and the like, prepared in a suitable inert, low chain transfer, organic liquid medium, such as n-hexane, cyclohexane, and chlorofluorocarbons such as 1,1,2-trichloro-1,2,2-trifluoroethane, and neutralized by a suitable base while still slurried in the inert low chain transfer organic liquid medium, perform effectively as water loss additives for drilling fluids under high temperature conditions. Such water loss control additives are especially effective when employed in drilling fluids having high solids content. Also disclosed are drilling fluids employing such water loss control additives as well as a method of drilling a bore hole in the earth using drilling fluids employing such water loss control additives.

Abstract: Mercaptobenzothiazoles are usually employed together with hydrocarbyl trithiocarbonate in flotation processes for the recovery of copper values from an ore containing same.

Abstract: In a process in which a heating fluid supplied from a furnace is utilized to supply heat to a plurality of processes, method and apparatus is provided for substantially optimizing the operation of the heater by minimizing the amount of the heating fluid which is bypassed around the processes to which the heating fluid is supplied.

Abstract: Tri-alkali metal di(carboxyalkyl) dithiocarbamates and triammonium-di(carboxyalkyl) dithiocarbamates which can be characterized by the formula ##STR1## wherein R and R' can be the same or different and are selected from the group consisting of alkylene radicals, preferably alkylene radicals each preferably having from 1 to 12 carbon atoms, and wherein M is selected from the group consisting of alkali metal atoms and ammonium; their use as ore flotation depressants; and a process for making these novel compositions are disclosed.

Abstract: The clock signal required for demodulation of a received NRZ digital data stream is generated by detecting each transition across a reference axis made by the received NRZ digital data stream. This transition data is then utilized to change the voltage applied to a voltage controlled oscillator. The change in the voltage applied to the voltage controlled oscillator causes the frequency of the output from the voltage controlled oscillator to change. The change in the frequency of the output of the voltage controlled oscillator adjusts the period of the clock signal until the clock signal is synchronized with the transition data at which time it may be used to demodulate the recieved NRZ digital data.

Abstract: In a crude oil refining process, heavy cycle oil from the catalytic cracking unit employed in the crude oil refining process is recycled to a hydrofining process. Such recycling improves the value of the product mix obtained from the crude oil refining process with respect to a process in which the heavy cycle oil withdrawn from the catalytic cracking units is recycled to the catalytic cracking units.

Abstract: A high pressure vessel is provided with a hermetic feedthru assembly from the inside, i.e. from the high pressure side. Specifically and preferably, pressure fittings employing the principle of cone and thread for sealing can be employed. Electrical, optical and fluid connectors are contemplated.