Abstract: A family of propylene amine oxime ligands has the formula 2 ##STR1## wherein preferably R.sup.1 is Cl-C4 alkyl or phenyl and each of R, R.sup.2, R.sup.3 and R.sup.4 is H or Cl-C4 alkyl. The technetium-99m complexes of these ligands are lipophilic neutral complexes useful as diagnostic radiopharmaceuticals and particularly for brain scanning. The ligands show stereoisomerism. The preparation and properties of the dl- and meso-stereoisomers, and of the d- and l-enantiomers, are described. The l-enantiomer and the dl-stereoisomer of the preferred compound (2, R=R.sup.1 =R.sup.2 =CH.sub.3, R.sup.3 =R.sup.4 =H) show good retention in the brain.

Abstract: A resinous block copolymer, such as butadiene/styrene block copolymer, having an antiblocking agent incorporated therein, such as a microcrystalline wax, is bonded or welded together with a composition containing at least one hydroxyl-ether and/or keto-ether such as 4-methoxy-4-methyl-2-pentanone.

Abstract: A process for conversion of gaseous UF.sub.6 to UO.sub.2 powders by using a fluidized bed reaction apparatus comprising pyrohydrolizing gaseous UF.sub.6 and steam to obtain UO.sub.2 F.sub.2 particles, hydrating and dehydrating the UO.sub.2 F.sub.2 particles to UO.sub.2 F.sub.2 anhydride and reducing the UO.sub.2 F.sub.2 anhydride to UO.sub.2 powders. The obtained UO.sub.2 powders are suitable for production of nuclear fuels in power plant owing to its good ceramic properties, low fluorine contents and free flowability.

Abstract: Disclosed is a low toxicity oil for use in drilling fluids. The oil consists essentially of branched- and cyclic-paraffins having 11 to 17 carbon atoms per molecule and further having a low aromatic content of less than about 1% and a low normal-paraffin content of less than about 5%. The low polynuclear aromatic oil is useful in both oil-based and water-based drilling mud, particularly where low toxicity and lack of water sheen are important such as in offshore drilling environments. The oil also has the advantage of being non-fluorescent so that it does not mask UV fluorescence of formation crudes produced from the drill cuttings in wildcatting operations.

Abstract: Novel 1,3-dioxolane compounds useful as antifungal and antiallergy agents and represented by the formula ##STR1## wherein Ar is thienyl, pyridyl, biphenyl, phenyl or phenyl substituted by one or more of halo, nitro, cyano, lower alkyl, lower alkoxy or perhalo(lower)alkyl; Y is CH or N;Q is ##STR2## W is --NR.sub.5 --, --O--, --S(O).sub.n --; X is NO.sub.2, NR.sub.6 R.sub.7 or COR.sub.8 ;R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently hydrogen or lower alkyl; R.sub.5 is hydrogen, lower alkyl or (C.sub.2 -C.sub.6) alkanoyl; R.sub.6 and R.sub.7 are independently hydrogen, lower alkyl, phenyl or phenyl substituted by one or more of halo, perhalo loweralkyl, (C.sub.2 -C.sub.6)alkanoyl lower alkyl, lower alkoxy or 2-loweralkyl-3-oxo-1,2,4-trirazol-4-yl or R.sub.6 and R.sub.7 taken together with the nitrogen atom in NR.sub.6 R.sub.7 form substituted or unsubstituted heterocyclyl, said heterocyclyl substituents being (C.sub.2 -C.sub.

Abstract: Method and apparatus for isotope separation using the combination of selective pre-excitation by light radiation with further collisional processing in a DC, rf or microwave gas discharge field to recover ionized atoms or dissociated molecules of the selected isotope. Thus, uranium atoms or molecules in gas phase are irradiated in an interaction volume with light radiation of selected wavelength to raise energy states to a relatively stable second or mid-level. At the same time a gas discharge within said interaction volume subjects raised energy atoms or molecules to a collisional process tending to raise a significant number through the energy ladder to the respective ionization continuum or dissociation light whereupon the charged atoms or molecules may be collected as an enriched bulk of selected isotopic species.

Abstract: The invention provides a process for producing a water-in-oil emulsion of a water-soluble polyacrylamide or polyacrylic acid polymer or copolymer by the inverse emulsion process characterized in that there is used as the emulsifying agent for the water-in-oil emulsion a water-insoluble, oil-soluble surface active agent of the formula (I):X--Y--Z Ior a functional derivative thereof, wherein X- represents a saturated or unsaturated hydrocarbon chain containing from 30 to 500 carbon atoms, --Y-- represents a succinic anhydride residue carried terminally upon the group X--, and --Z represents a hydrophilic group carried by the group --Y--.

Abstract: The oligomers prepared by the reaction of an .alpha.,.beta.-ethylenically unsaturated aldehyde with organic amines further reacted with a carboxylic acid, organic halide or an epoxide-containing compound are employed as corrosion inhibitors in a process for preventing corrosion of ferrous metals in contact with corrosive brine, oil and gas well fluids.

Abstract: Certain tetrasubstituted alkyl, aryl, pyridinyl, piperidinyl, and piperazinyl urea compounds stimulate the release of acetylcholine and are thus useful analgesic agents for alleviating pain or as cholinergic agents which are useful for the amelioration of the symptoms of cognitive decline in the elderly.These compounds have the general formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.4 are phenyl or substituted phenyl, and R.sub.3 is pyridinyl.Pharmaceutical compositions including these compounds as well as methods for the preparation of the compounds are also disclosed.

Abstract: The instant invention relates to liquid compositions useful in cosmetic applications comprising a polysiloxane selected from the group consisting of cyclic and non-cyclic dimethyl polysiloxanes and mixtures thereof, at least one nonionic polyoxyalkylene block copolymer, and water. This polyoxyalkylene copolymer is a cogeneric mixture of conjugated polyoxyalkylene compounds containing in their structure the residue of an active hydrogen-containing compound having from 2 to 4 carbon atoms, 2 to 4 active hydrogen atoms at least one hydrophobic oxyalkylene chain in which the oxygen-carbon atom ratio does not exceed 0.4 and at least one hydrophilic oxyalkylene chain in which the oxygen-carbon atom ratio is greater than 0.4 and water.

Abstract: Apparatus and methods are provided for producing a proppant carrying foamed fracturing fluid or the like having very high ratios of proppant material to the liquid phase of the foam, which can be substantially higher than even the theoretical maximum ratio available when the proppant is introduced into a foaming apparatus as a proppant/liquid slurry. This is accomplished by a dry sand foam generation process wherein the sand or other particulate material is introduced into a foam generator apparatus as a dry particulate material in a stream of gas which is subsequently mixed with a second liquid stream.

Abstract: A sanitizing composition consisting essentially of a mixture of a calcium hypochlorite compound and a peroxydisulfate compound having the formula: M.sub.x S.sub.2 O.sub.8 where M is an alkali metal or alkaline earth metal, and x is 1 or 2 is employed in treating water to improve pH control and provide increased removal of organic materials.The compositions provide improved sanitation of water in swimming pools, spas, and cooling towers by efficiently oxidizing organic impurities while helping to minimize the increase in the pH of the water. This permits a reduction in the amount and frequency of addition of acidic compounds such as hydrochloric acid to the water bodies. Further, the incorporation of additives such as algaecides, dispersants, and clarifying agents provides for significant improvements in water quality as evidenced by sparkling pure water.

Abstract: The invention provides novel bleaching compositions comprising peracid precursors with the general structure ##STR1## with R, R', R" and L as defined in the specification. Novel peracids and precursors are also herein disclosed. These peracid precursors provide new, proficient and cost-effective compounds for fabric bleaching.

Abstract: Pure perihenate is isolated from a aqueous crude solution of perrhenate by first associating the perrherate with a lipophilic counter ion such as tetrabutyl ammonium. This is added to the solution in a form such as tetrabutyl ammonium bromide. Tetrabutyl ammonium perrhenate is formed. The aqueous mixture is then added to a reverse phase separation column such as a C.sub.18 Sep Pak filter which has been previously loaded with the lipophilic counter ion. The aqueous portion of the crude mixture is eluted from the column with water. Subsequently the purified perrhenate associated with the lipophilic counter ion is removed with a less polar solvent such as ethanol. Pertechnetate can also be separated from an aqueous mixture in the same manner. These procedures are particularly suited for isolating relatively pure radioactive forms of perrhenate and pertechnetate such as Re.sup.186 O.sub.4.sup.-, Re.sup.188 O.sub.4.sup.-, and .sup.99m TcO.sub.4.sup.-.

Abstract: Boron isotopes are separated by a method comprising preparing a gaseous mixture from a gas containing an oxidizing gas as its main component and gaseous boron tribromide, and irradiating the gaseous mixture with light from an ammonia laser, thereby effecting separation of the boron isotopes of mass number 10(.sup.10 B) and mass number 11(.sup.11 B).

Abstract: Described is an aqueous bleaching composition comprising (a) hypochlorite-yielding bleaching agent, e.g., sodium hypochlorite, (b) alkaline reagent, e.g., sodium hydroxide, and (c) alkyl poly (ethyleneoxy) sulfonate corresponding to the general formula, RO(C.sub.2 H.sub.4 O).sub.n-1 CH.sub.2 CH.sub.2 SO.sub.3 M, wherein R is an alkyl group having from 6 to 30 carbon atoms, n is a number from about 3 to about 20, and M is alkali metal. Optionally, additional miscellaneous materials such as abrasives, builder compounds, etc. may be present to provide a disinfecting cleansing composition.

Abstract: Deodorized compositions are described comprising an intimate mixture of a malodorous sulfur containing compound and activated carbon.

Abstract: Unless aqueous acidic hydrogen peroxide solutions are stabilized, an excessive rate of decomposition of hydrogen peroxide precludes their use for treatment of metal surfaces, such as of copper and copper alloys, during which use substantial concentrations of decomposition catalysts build-up in solution. Regular monitoring of the solutions for residual stabilizer content would demand sophisticated analytical equipment beyond the reach of many users.The invention provides a stabilizer in the form of a block of sparingly soluble material, whereby monitoring can be simply and readily effected visually or by a simple electrical or mechanical detection system. For copper/copper alloys preferred stabilizers are p-hydroxybenzoic acid and triphenyl carbinol.

Abstract: The zirconium 91 isotope is separated from zirconium by a photo-assisted extraction process wherein a first solution is formed of a first solvent, scavenger and zirconium compound, which compound reacts with the scavenger when exposed to light, and while irradiating the first solution to form a zirconium reaction product, contacting the same with a second solvent that is immiscible with the first solvent and is a preferential solvent for the zirconium reaction product, with the reaction product transferred to the second solution, and the two solutions then separated. An acidic aqueous media is preferred as the first solvent, with excess acid used to provide anions that act as the scavenger.

Abstract: A process for the recovery of uranium which has been extracted from phosphate-bearing solutions by means of an organic solvent and which is re-extracted from said solvent by means of hydrofluoric acid is disclosed.The process is characterized in that sodium ions are introduced into the solution of hydrofluoric acid, while aluminum and magnesium ions may also be added to the sodium ions. That solution may be produced by recycling of a fraction of the suspension of fluoride from the re-extraction step, after having separated the solvent, and to which a make-up of sodium, aluminum and magnesium ions and hydrofluoric acid was added.