Abstract: A continuous process for the isomerization of hexafluoropropylene oxide to hexafluoroacetone comprises passing hexafluoropropylene oxide in contact with liquid antimony pentafluoride adsorbed on a solid support under conditions which substantially prevent loss of antimony pentafluoride from the reactor in which the isomerization is carried out and removing the hexafluoroacetone product at about the same rate as that at which it is formed. Hexafluoroacetone is an important industrial monomer, which can be copolymerized, for example, with ethylene and tetrafluoroethylene to a product that finds use in coating electrical wires.

Abstract: A cylindrical guide for varying the width of a bundle of continuous filaments has a surface in contact with the bundle that has an array of nonparallel grooves. The grooves converge until a minimum distance is reached on the guide surface and from thereon diverge to a maximum distance. With this arrangement of grooves it is possible to control the width of the bundle of filaments in a widening or narrowing manner by simply rotating the cylindrical guide one direction or the other until the desired width is reached.

Abstract: Compounds are provided having the structure ##STR1## wherein R.sup.1 and R.sup.2 may be the same or different and are hydrogen, lower alkyl, lower alkenyl, or hydroxy-lower alkyl, or R.sup.1 and R.sup.2 together with the nitrogen atom to which they are attached also form a heterocyclic radical which may contain another heteroatom, namely nitrogen, oxygen or sulfur; R.sup.3 and R.sup.4 may be the same or different and are hydrogen or lower alkyl. These compounds are useful in the treatment or arrhythmia.In addition, novel intermediates are provided having the structure ##STR2## wherein R is hydrogen, benzyl or ##STR3## These intermediates are also useful in treating acute myocardial infarction.

Abstract: Process comprising contacting and reacting a diarylketone of the formula RCOR', wherein each of R and R' is aryl, the same or different, and hydrogen over at least a catalytic amount of lead-poisoned palladium catalyst, for example, Lindlar catalyst, at a hydrogen gage pressure in the range from about 150 kPa to about 15,000 kPa, preferably from about 340 kPa to about 3400 kPa, at a temperature in the range from about 50.degree. C. to about 200.degree. C., preferably from about 100.degree. C. to about 150.degree. C., to produce diarylmethanol of the formula RCHOHR', wherein R and R' are as defined above.

Abstract: Thick film resistors, based on pyrochlore conductive phase, glass, and refractory fillers having a thermal expansion coefficient range of 40.times.10.sup.-7 -60.times.10.sup.-7 /.degree. C. and low solubility in the glass, are provided. Such thick film resistor pastes afford resistors having excellent stability to mechanical or thermal stresses.

Abstract: The present invention relates to a method of inducing a response dopamine-like in an animal having impaired cardiovascular and renal functions, comprising administering to said animal an effective amount of a compound having the general formula: ##STR1## wherein R is a secondary or tertiary alkyl radical having from 3 to 7 carbon atoms, and their salts with nontoxic organic and inorganic acids.In particular, the present invention relates to a method of treating cardiac and renal failures comprising administering to a patient suffering therefrom an effective amount of a compound having the above-identified general formula, in suitable pharmaceutical preparations.

Abstract: The alkali metal methylate catalyst used in the preparation of dimethylformamide from dimethylamine and carbon monoxide can be preserved, recycled and reused if the reaction mass contains dimethylamine in excess of the stoichiometric amount at all times.

Abstract: A vacuum cleaning apparatus using a hood forming a travelling vacuum chamber with an optimum combination of jet stream means and suction nozzle means. The jet stream means includes a plurality of orifices that are generally directed toward the intake of a suction nozzle means so as to cause the soil on the surface to be cleaned to become airborne before being acted upon by the suction nozzle means. A combined motor and air compressor is mounted in the hood means for furnishing compressed air to the jet stream means. The motor may also drive a rotating brush which may be interposed between the jet stream means and the suction nozzle means.

Abstract: Dimensionally stable energy-treated polyester film is coated with an opaque antistatic backing layer of carbon-filled polyacrylate containing an aziridine cross-linking agent.

Abstract: This invention relates to herbicidal O-alkyl sulfonylisoureas which are useful as herbicides, both general and selective.

Abstract: A modification to a reel type staple cutter that includes a compartmentalized assembly located below the cutter reel, each compartment forms an isolated cutting zone which reduces the opportunity for falling tufts of cut staple to mix and intermingle to form clumps which are difficult to open. The curved top plate of each compartment provides a downward force vector which assists gravitational forces and injected air to overcome centrifugal and adhesive forces tending to prevent staple from falling. Plates and baffles attached to a stationary shell located beneath the cutter reel split the cut fibers into discrete tufts despite the cohesive nature of the product and promote flow down and from each compartment.

Abstract: A pad-type painting applicator of the type having a handle and a replaceable applicating pad includes a simplified design for use in either of two paint applying modes and an improved mechanism for removably mounting applicating pads. A relatively short handle gripping portion is secured to an enlarged base, which mounts the replaceable applicating pad, for use when painting areas close within reach of the painter and where the painter can easily move the tool in strokes generally parallel to the surface on which the paint is being applied. A threaded aperture or short cylindrical portion is provided in the base at an angle with respect to the handle gripping portion for use in conjunction with an elongated extension pole that may be secured to the tool to enable normally inaccessible areas or surfaces to be reached. A flexible tab on the base secures a slideably mounted applicating pad generally in the center thereof.

Abstract: A process is provided for preparing self-crimpable monocomponent fibers by the sequential steps of melt-spinning a polymer of polyhexamethylene adipamide or polycaproamide into filaments, quenching the filaments by a cross-flow of air to an average surface temperature of about 40.degree. to 130.degree. C., applying an effective amount of water to the filaments while they are in said temperature range, and then drawing the filaments at a draw ratio of at least 1.3:1 to obtain a tenacity of at least 1.3 gpd, a break elongation of less than 120% and a latent, substantially helical, frequently reversing crimp of at least 6 filament crimp index. The novel products of the invention, which include fibers and yarns, in self-crimpable or crimped condition, are particularly suited for use in carpets.

Abstract: A surprise action game comprising a play area which may depict an environment such as a spider web and includes electrically conductive portions. Play objects, as for example toy insects, having at least some electrically non-conductive portions are disposed on the spider web area. A manually moveable member is provided to pickup, move or otherwise manipulate the play objects. The member has an electrically conductive portion which comes into close proximity to the electrically conductive portions of the web area incident to the manipulation; if these electrically conductive portions make contact, a circuit is completed to energize a motor, which in turn drives an arm to suddenly flip or propel a surprise object such as a spider onto the web area.

Abstract: An extensible watch strap is made up from tubular links which extend transverse to the length of the strap. The links are arranged in two rows with the links in one row offset from the links in the other row. Each link is connected to the two adjacent links in the other row by U-shaped connectors which have limbs projecting into respective links. The limbs are received between pairs of leaf springs which act in the longitudinal direction of the strap and tend to push both of the limbs which are received in each link against each other.

Abstract: Propenimidates are provided having the formula: ##STR1## wherein X and Y are independently O or S; andR.sup.1 and R.sup.2 are independently C.sub.1 -C.sub.4 alkyl, (CH.sub.2).sub.n OR.sup.3 where R.sup.3 is C.sub.1 -C.sub.4 alkyl and n is 1 or 2, CH.sub.2 CH.sub.2 Cl, or CH.sub.2 CF.sub.3, provided that when R.sup.1 or R.sup.2 is CH.sub.2 CH.sub.2 Cl or CH.sub.2 CF.sub.3, then the respective X or Y is 0.Preferred propenimidates have X and Y as O and R' and R.sup.2 as methyl or ethyl.The propenimidates are made by preparing a monohydrohalide salt from a dihydrohalide salt of the formula: ##STR2## and then contacting the monohydrohalide salt with cyanamide. The propenimidates upon heating ring close to pyrimidines which are useful in preparing herbicidal compounds.

Abstract: A flashing reactor wherein the initial single pipe carrying the ingredients within the flasher shell is connected within the shell to a flow splitter which in turn is connected to at least two other pipes arranged for parallel flow. In order to avoid an abrupt change in pressure and flow rate downstream from the splitter, the cross-sectional area of the branch pipes immediately adjacent the splitter is approximately equal to the cross-sectional area of the single pipe feeding of the splitter. The branch pipes are then increased in diameter until the combined cross-sectional area of the branch pipes is increased to up to twice the area of the single pipe feeding the splitter.

Abstract: A surface delay device which exhibits good precision in delay timing when it is ignited from the side output of a low-energy detonating cord (LEDC) trunkline and end-initiates an LEDC trunkline or downline has a percussion-sensitive ignition charge wedged between the integrally closed end of a metal shell and the end of a delay capsule, which houses the delay and priming charges. An orifice in the end of the delay capsule between the ignition and delay charges is kept free of the ignition charge, e.g., by providing an axial recess in the end of the shell extending at least as far as the orifice. In the field the end of a cord is fitted into a well which is seated in the main detonating charge, adapted to be initiated by the priming charge; and another cord is positioned transversely against the ignition end of the shell.

Abstract: Fluorinated allylisocyanurates are extremely efficient gelling agents for fluoroelastomers. Blends of fluorinated allylisocyanurate gelled fluoroelastomers with non-gelled fluoroelastomers have improved processability as compared with non-gelled fluoroelastomers and blends of other gelled fluoroelastomers with non-gelled fluoroelastomers.

Abstract: A package comprising a light-proof envelope or bag containing a plurality of X-ray film sheets stacked for co-operation with a dispensing machine and useful in a daylight handling system for daylight loading and unloading of cassettes. The film sheets are identical and may have a photographic emulsion layer on one or both surfaces. The adjacent films in the stack have their surfaces in contact. Each sheet has a cut-away portion along one edge thereof for coacting with a film selector cam. In the stack, the sheets are alternated so that the cut-away portions lie along a common stack edge and are arranged in two parallel rows. The cut-away portions in adjacent sheets are in different rows and in superposition. After the package is in a dispenser, the envelope or bag is stripped from the stack so that the sheets can be removed one at a time from the stack and passed into film holders or cassettes engaged with the dispensing machine.