The present invention relates to anticonvulsant compounds useful in the treatment of epilepsy and other central nervous system disorders. The compounds of this invention have the following general formula: wherein R and R1, independently, are lower alkyl, aryl lower alkyl or phenyl, unsubstituted or substituted with at least one substituent; R2 and R3, independently, are hydrogen, lower al...

Appts. comprises a vessel which communicates with a separator via two generally L-shaped conduit. The conduit connected to the vessel outlet has a sloping portion connected to a horizontal portion adjacent to the connection to the separator. The slope is between 30 deg. and 70 deg. downward from the horizontal portion.; UN APARATO PARA TRANSPORTAR PARTICULAS SOLIDAS AL INTERIOR DE UN GASIFICADOR D...

Acumulador eléctrico con un elevado número de placas dobles montadas transversalmente al tabique de separación entre celdas, con alto rendimiento energético, que siendo del tipo de plomo-ácido y constituyéndose mediante un cuerpo monobloque con varias celdas o vasos conteniendo el paquete de placas, se caracteriza esencialmente porque las referidas placas estan montadas por parejas, a excepción de...

Mueble de asiento convertible en cama, particularmente una banqueta-cama y/o un canapé-tumbona, caracterizado porque está dotado de un chasis de soporte de un cuadro formado por unos largueros articulados entre si y rigidizados por travesaños por debajo de la superficie de cama, en los diferentes lugares susceptibles de disminuir la comodidad, comprendiendo un mecanismo susceptible de ser replegad...

The apparatus for distributing a filament bundle in the course of spunbonded fabric production with pneumatic yarn forwarding where at both sides of the filament bundle, which is forwarded in the extended state, there are provided periodically moving flow guide surfaces (Coanda shells) which are rigidly connected to one another with a sufficient distance between and which are movable backward and ...

The present invention provides a process for treating polyvinyl fluoride surfaces to enhance adhesion of other polymers thereto comprising applying to at least one surface thereof a solution consisting essentially of a coating polymer selected from a polyurethane or an alkyl polymethacrylate and at least one aprotic polar solvent in which said polymer is soluble, and exposing said surface to a tem...

A microporous powder form polylactide which can take up a multiple of its own weight of active material and which can be used for the controlled release of that active material. The aforesaid microporous polylactide powder can be prepared by dissolving polylactide under warming in phthalicacid diethylester, preferably at a temperature over 150 DEG C. and then slowly cooling the clear solution. Th...

A luminescent screen for a picture display apparatus comprising a plate glass screen 1 and a luminophore layer 6 formed on the glass plate in depressions 4 that are surrounded by a black pigmented contrasted border layer 5. The luminescent screen has an optimum color purity and in particular off-color combinations on the surface of the layer of the respective color should be avoided and is undesir...

Process involves heating mixts. of (A) polyaryl ether(s) having Ar-X or Ar-OZ end gps.; and (B) nucleophilic reagents comprising (1) alkaline Gp. I or II metal salts, or (2) difunctional cpds.having X and/or OZ gps. reactive towards Ar-OZ and Ar-X in (A) respectively; and maintaining at temps. above (A) m.pt. until the desired increase in mol. wt. has occurred. Ar = arylene, esp. phenylene; X = mo...

PROCEDIMIENTO PARA PRODUCIR UN POLIACRILATO SUPERABSORBENTE DE AGUA, EN PARTICULAR PARA PRODUCIR UN MATERIAL ABSORBENTE DE AGUA QUE TIENE EXCELENTE RESISTENCIA A LAS SALES Y UNA ELEVADA VELOCIDAD DEABSORCION DE AGUA. COMPRENDE UNA ETAPA DE RETICULACION DE UN POLIMERO HIDROFILO QUE TIENE GRUPOS CARBOXILO O CARBOXILATO Y UN CONTENIDO EN AGUA ENTRE UN 10 Y UN 40% EN PESO, CON UN AGENTE DE RETICULACIO...

A crosslinkable foamable compsn. comprises 5-95wt.% of an ethylene copolymer (I), 5-95wt.% of a vinyl or vinylidene halide polymer, 0.5-20wt.% of a chemical blowing agent and 0.2-5.0wt.% of a free radical crosslinking agent. (I) is a copolymer of ethylene with 1-30wt.% carbon monoxide or sulphur dioxide and 1-60wt.% of a 3-20C unsatd. mono- or di-carboxylic acid or ether thereof, a vinyl 2-18C sat...

Prodn. of a hot gas chiefly comprising CO and H2 from a carbonaceous feed material (I) comprises: (i) introducing finely-divided (I) in a carrier gas with an oxidant and possibly a slag-forming agent to a gasification chamber; (ii) partially combusting and at least partially gasifying (I) in the chamber; (iii) introducing the gas mixt. from the chamber directly into a shaft contg. a bed of lumpy c...

Process for the production of synthesis gas with an increased H2/CO-ratio from normally gaseous hydrocarbons comprising the following steps: a) at least one normally gaseous hydrocarbon is converted into a synthesis gas comprising H2 and CO by partial oxidation with an oxygen-containing gas; b) at least one normally gaseous hydrocarbon is converted with steam into a gaseous mixture comprising H2 a...

A distribution transformer and a method of making same. The transformer has at least one closed magnetic circuit in the form of a hollow toroidal coil made from ferro-magnetic steel ribbon. An electric circuit is formed by a primary winding and a secondary winding each constituted by one or more sub-assemblies in the form of a double pancake. These double pancakes are juxtaposed and molded togethe...

The subsurface position of a blowing well with respect to an adjacent relief well is determined by detecting at a plurality of axially and tangentially spaced locations in the relief well acoustic waves emanating from a subsurface location of the blowing well. The distance between the wells is calculated on the basis of the difference in times of arrival of the waves at said axially spaced locatio...

Method for suctioning submerged bottom material with the aid of at least a suction pipe connected to a vessel, whereby said suction pipe is lowered from said vessel in an inclined or vertical position and an underpressure is created in said suction tube for suctioning a mixture of bottom material and water through the tube via one or more suction openings near the lower side of the suction tube. T...

A method of treating teeth with a photopolymerizable composition comprising at least one olefinically unsaturated monomer and an acylphosphine oxide catalyst.

Benzofuran derivs. and analogues of formula (I) and phenol derivs of formula (II) and their salts are new. R=lower alkyl substd. by OH, SH, halo, COOH or lower alkoxycarbonyl; lower alkanoyl opt. substd. by halo; CN; halo; lower alkylthio; or COOR2; R2=H or 1-6C alkyl; m=1-4; n=2-3; A=phenyl substd. by (R1)q; or Ar substd. by 1 or more R1 gps. q=0-5; R1=H, halo, lower alkoxy, lower alkyl thio, -s...

Natural gas is liquefied using two closed cycle, multicomponent refrigerants in which high level refrigerant cools the low level refrigerant and the low level refrigerant cools and liquefies the natural gas, in an installation which comprises (a) heat exchanger for cooling and liquefying natural gas against low level refrigerant; (b) at least 1 compressor for compressing low level refrigerant to e...