Abstract: The present invention relates to new phthalimides of the formula (I) ##STR1## wherein n is an integer of from 1 to 12, preferably 1 to 4 and especially 1 to 2 andR is H or F,and their preparation, these phthalimides being suitable, in combination with alkali metal salts, as flameproofing agent combinations for thermoplastic, branched, aromatic polycarbonates.

Abstract: A plasma reactor is described in which radially outward and radially inward gas flows are adjusted to maintain uniformity for different wafer sizes and to compensate for loading effects. Inlet ports are provided about the sides of a reactor chamber and at a central position in the top of the chamber, the latter being provided with a flared, tubular structure. Exhaust ports are located about the sides of the chamber. The gas flow from the side inlet ports may have a tangential component.

Abstract: In an ozone generator composed of a plurality of circular, plate-shaped high-voltage electrodes arranged in a stack, the electrodes including at least two solid electrodes which are spaced from one another and a counter-electrode, the generator further being composed of two circular plates of insulating material disposed in the stack between the two solid electrodes, with the counter-electrode being disposed between, and spaced from, the two plates to form therewith two discharge spaces, and with the outer diameter of the counter-electrodes being less than that of the plates, and a ring clamped and squeezed between the plates in the vicinity of their peripheries, the ring is of a gasket material which is initially resilient, and which is formed to have, at each side directed toward a respective plate, at least two beads projecting in the axial direction of the plates and spaced apart in the radial direction of the plates, and the plates are rigidly supported against the two solid electrodes.

Abstract: An improved magnetic device for subjecting a liquid flowing through a pipe to a magnetic field in order to reduce subsequent crystalization of inorganic compounds. The device may be installed very easily and without first severing a pipe of an existing installation and provides a homogeneous magnetic field of high flux density. It has a housing with a central pipe-receiving passage and a slot extending from the passage through the periphery so that the pipe may be positioned in its passage. A plurality of magnets are contiguously arranged within the housing to surround most of the pipe except at the slot. A keyway is formed at the slot so that a key magnet body may be slid into the housing parallel to the pipe.

Abstract: Stabilization of aqueous solutions of polysaccharides, even in the hot, by the addition of alkali metal dialkyl-dithiocarbamate and sodium chloride or calcium chloride. Applications to drilling fluids and to the improved recovery of crude oil.

Abstract: The solar blind ultraviolet filter includes in an intimate cascade relationship an ultraviolet grade quartz cell containing chlorine gas receiving light energy on an input face thereof, a first Jena UG5 glass cell containing potassium iodide doped with thallium, a second Jena UG5 glass cell containing a 2, 3-dihydro-5, 7-dimethyl-1H-1, 4-diazepine perchlorate and glycerol solution and a Jena UG5 glass and ultraviolet grade quartz cell containing nickel sulfate hexahydrate as the output element of the filter. A black anodized aluminum shell encloses the peripheral surface of all of the above cells. An extremely high viscosity interface coupling medium, such as dimethyl polysiloxane, is disposed at all interface surfaces of the various materials employed in the filter to minimize reflection losses at these interface surfaces.

Abstract: A plasma reactor apparatus is disclosed in which plates having channels are used to redistribute gas uniformly over the surface of a wafer being processed in the reactor. Slot means adjacent the plates provide a final baffle to prevent jetstreams in the gas from impinging directly on the wafer.

Abstract: An electrical charging apparatus which includes a confronting electrode formed by a metallic plate, a heat-resistant electrically insulative member for covering a surface of the confronting electrode, an exciting electrode in the form of a thin wire fixed to a surface of the heat-resistant electrically insulative member so as to face the confronting electrode through the heat-resistant electrically insulative member, a power source for applying a high voltage AC current between the confronting electrode and the exciting electrode, and a control electrode in the form of a mesh provided to confront the exciting electrode.

Abstract: An unballasted arylhydrazide is disclosed the aryl moiety of which is substituted with a group of the formula ##STR1## where one of X and X' represents -NH-, the other represents a divalent chalcogen, and R represents an aliphatic or aromatic residue. The arylhydrazides, when applied to halftone imaging in conjunction with silver halide emulsions, photographic elements, and imaging processes, produce images of improved dot quality and low levels of pepper fog.

Abstract: Processes for producing 4,4-dimethyl-3-isoxazolidinone and intermediates for it from known and inexpensive starting materials are described and exemplified.

Abstract: Energetic diols of the formula ##STR1## wherein R is --H, --NO, --NO.sub.2, --CN, or --CH.sub.2 COOH, and diesters of the formula ##STR2## wherein R is --H, --NO, --NO.sub.2, --CN, --CH.sub.2 COOCH.sub.3, --CH.sub.2 COOCH.sub.2 C(NO.sub.2).sub.2 CH.sub.3, or --CH.sub.2 COOCH.sub.2 C(NO.sub.2).sub.3 and R' is an alkyl, fluoroalkyl, chloroalkyl, aryl, fluoroaryl, chloroalkyl, aralkyl, fluoroaralkyl, chloroaralkyl, or alkene group.

Abstract: A process for removing turbidity from apple juices is disclosed; said process comprising treatment of said juices with silica hydrogel and filtering through a diatomaceous earth filtering medium.