Abstract: Process for purifying fumes originating from the incineration of household waste and for manufacturing an aqueous sodium chloride solution, according to which the fumes (3) are subjected to a dust-removal operation in order to separate out the ash (5), which is washed with water, the dust-free fumes (9) are treated with a basic reagent (11) comprising a sodium compound, and they are then subjected to a dust-removal operation, the dust (16) collected from the dust-removal operation is dispersed in water (8) originating from the washing of the ash (5), and the aqueous sodium chloride solution thus obtained (19) is purified.

Abstract: A shut-off device for progressive regulation of the flow rate of a fluid flowing in a pipe includes a main shut-off member which is able to pivot independently about a spindle passing through the pipe in order to close the latter, and at least one drive flap able to pivot about the spindle and act mechanically on the main shut-off member in such a way as to turn it about the spindle. The main shut-off member also being traversed by at least one orifice that can be closed by at least one shut-off flap, which flap can also pivot about the spindle, is integral with the drive flap and can regulate the rate of flow of the fluid through the orifice. The main shut-off member only begins to pivot about the spindle, from an initial closed position, when the drive flap is at a predetermined non-zero angular distance &phgr; from the said member, thus allowing the fluid to flow only through the orifice until the main shut-off member begins to open.

Abstract: Safety valve for venting a liquid tank, comprising means for ventilating the tank, including when the latter is inclined, for preventing liquid from being ejected if the tank is inclined or if waves of liquid are produced, for automatically closing in the event of inversion, for adjusting the useful volume and for allowing gas to escape during filling. As a preference, it also comprises means for ventilating it in the event of a depression or overpressure. The valve is characterized in that a flexible seal equips the seat of a valve element. As a preference, the head of the valve also comprises means for preventing dirt from getting into the tank. The valve is well suited to fuel tanks for diesel-engine motor cars.

Abstract: The present invention provides a photocatalyst-carrying structure which has a structure, wherein an adhesive layer is provided in between a photocatalyst layer and a substrate, the adhesive layer is composed of silicon-modified resin, polysiloxane-containing resin or colloidal silica-containing resin, and for forming the photocatalyst layer a composition comprising a metal oxide gel or a metal hydroxide gel and a photocatalyst is used. Further, the present invention also provides a photocatalyst coating agent for producing a photocatalyst-carrying structure which contains silicon compound, at least one metal oxide sol or metal hydroxide sol, and at least one photocatalyst powder or sol.

Abstract: The invention relates to a product and process for producing molded unsaturated polyester products. An unsaturated polyester is formulated with two initiators in combination with two reagents which scavenge free radicals; one of the scavengers traps free radicals which occur at low temperatures of 20 to 50° C.; whereas the second scavenger traps free radical which are produced and occur in the compositions at temperatures above those low temperatures. The compositions of the invention eliminate premature gelling and insure shelf life.

Abstract: A polyester fiber is provided, which does not produce a huge amount of residues during its reducing process, and shows good appearance, feeling and superior characteristics as a fiber, such as a high tensile strength and elongation. Such polyester fiber is a conjugate fiber comprising a core spinned from a polyester containing an aromatic moiety and a skin layer surrounding the core, the skin layer spinned from an aliphatic polyester. The skin layer may be easily reduced by contacting it with an alkaline solution or an enzyme, to provide a reduced fiber with good appearance, feeling and superior characteristics as a fiber.

Abstract: The invention relates to a process for producing sinterable metallic shaped parts from a metal powder, which is mixed with an auxiliary compacting agent containing at least in part components from the polyalkylene glycol family, is filled into a compacting mold and, following the compacting under pressure, is ejected from the mold as compacted shaped part.

Abstract: The invention comprises a catalyst support containing an &agr;-olefin polymer which is in the form of particles of mean size from 5 to 350 &mgr;m in which the pore volume generated by the pores of radius from 1,000 to 75,000 Å is at least 0.2 cm3/g. A catalyst usable for the polymerization of &agr;-olefins, including a compound containing at least one transition metal belonging to groups IIIb, IVb, IVb and VIb of the Periodic Table, bound in or on this support, is also described.

Abstract: The present invention provides a thin film of non-protonic electrolyte and electrolyte-immobilized liquid-film conductor, easily produced into a thin film and to have a large area, securely holding the non-protonic electrolytic solution over a wide temperature range, and showing stability for extended periods and improved mechanical strength. They comprise a polyolefin film with a solvent-resistant polyolefin as the basic component, which is impregnated with the non-protonic electrolytic solution to immobilize it. The polyolefin composition for the film contains a terminal-modified polypropylene having, in the terminal chain, a functional group showing an affinity for the solvent for the electrolytic solution for the thin film of non-protonic electrolyte, and further contains an electron-conductive substance in addition to the terminal-modified polypropylene for the electrolyte-immobilized liquid-film conductor. As a result, the polyolefin film stably holds the solvent for the electrolytic solution.

Abstract: An ethylene homopolymer having a density of from about 0.956 to about 0.970 g/cm3 and a high load melt index (190° C. and 21.6 kg) of from about 7 to about 21 g/10 min. A continuous polymerization process for the production of the ethylene homopolymer, in the presence of a diluent chosen from the group consisting essentially of n-butane, n-hexane, n-heptane, isobutane, isopentane, isooctane, 2,2-dimethylpropane, cyclopentane, cyclohexane and their mixtures, wherein ethylene is brought into contact with a chromium oxide catalyst deposited on an inorganic support containing from about 0.1 to about 5 wt % chromium and activated at a temperature from about 600 to about 900° C., at a polymerization temperature from about 55 to about 150° C., the ethylene concentration in the diluent being from about 1 to about 10 mol %. A composition consisting essentially of the ethylene homopolymer, the composition having a density of from about 0.956 to about 0.

Abstract: The object of this invention is to provide a new cysteine protease. The object is achieved by providing a new cysteine protease which is obtained from a flesh fly (Sarcophaga peregrina) and comprises 26 kDa and 29 kDa subunits.

Abstract: Process for the polymerization of olefins using a catalytic system comprising a solid precursor containing at least one neutral halogenated metallocene derived from a transition metal and at least one ionizing agent, and an organometallic compound derived from a metal chosen from groups IA, IIA, IIB, IIIA, and IVA of the Periodic Table.

Abstract: Compositions including 1,1,1,3,3-pentafluorobutane and at least one surface-active agent chosen from hydrophobic organic surface-active agents of the amine, carboxylic acid diester and phosphoric acid ester types, which can be employed for removing water from a solid surface.

Abstract: An optical waveguide isolator for use in an optical communication system is disclosed. The optical waveguide isolator comprises a semiconductive light amplifier structure including a semiconductor substrate of first conductivity type having a surface of a layer to be formed thereon, a first cladding layer of first conductivity type formed on the substrate, an active layer formed on the first cladding layer, a second cladding layer of the second conductivity type opposite to first conductivity type, formed on active layer, a first electrode formed on the surface of the semiconductor substrate opposite to the surface to be formed as a layer, and a second electrode formed on the second cladding layer; the first and the second cladding layers and the active layer form an optical waveguide in which the light wave propagates.

Abstract: Ethylene polymer having a die swell ratio (RB) of at least 1.4, a resistance to crazing under stress (ESCR) of at least 55 h and a melt index (MI5) of at least 0.2 g/10 min. Processes for obtaining this ethylene polymer using different catalytic systems, the first based on titanium and zirconium used in a polymerization in two reactors; the second consisting of a mixture of a titanium catalyst and a titanium and zirconium catalyst, used in a polymerization in two reactors; the third based on chromium on a support comprising at least two constituents chosen from silica, alumina and aluminum phosphates, used in a polymerization in a single or in two reactors.

Abstract: Process for marking a thermoplastic article produced by extrusion of a parison and blow moulding of the said parison, in which the extruded parison is marked before blow moulding by at least one jet of an ink based on a compound which crystallizes in acicular form during drying. No figure.

Abstract: A heat resistant lubricating oil composition which exhibits high heat resistance and oxidation resistance under high temperature conditions, and can withstand severe working conditions, as in jet engines or gas turbines. The lubricating oil composition comprises a polyphenylthioether of formula {I} in a lubricating base oil, comprising any one of a polyol ester, dibasic acid ester, a polyphenyl ether, an organopolysiloxane and admixtures thereof.

Abstract: The present invention relates to thermosetting resin compositions comprising (a) a first vinyl ester resin synthesized from the diglycidyl ether of bisphenol A, bisphenol A and glacial methacrylic acid, in from about 1% to about 95% by weight of the total composition; (b) a resin selected from the group consisting of (1) a second different vinyl ester synthesized from the diglycidyl ether of bisphenol A with glacial methacrylic acid, and (2) an unsaturated polyester, in from about 1% to about 69% by weight of the total composition; and electrical laminates made therefrom which further comprise a catalyst in from about 0.1% to about 2% by weight of the total composition and which may or may not be clad with an electrical conductive layer on at least one side; and a method of producing these.

Abstract: Process for manufacturing a blown film essentially consisting of an aliphatic polyester, according to which: (1) the polyester is synthesized from at least one cycloaliphatic ester, with the intervention of an initiator comprising at least one metal trialkoxide and/or metal tetraalkoxide, in an extrusion device; (2) the polyester is extrusion blow-moulded, immediately after it has been synthesized in the said extrusion device, fitted for this purpose with an extrusion blow-moulding die, with a swelling ratio of at least 2.5. The invention also relates to a film essentially consisting of an aliphatic polyester, which can be obtained according to the process of one of the preceding claims, in which the modulus of longitudinal elasticity (LE) and the modulus of transverse elasticity (TE) and the longitudinal shrinkage (LS) and transverse shrinkage (TS), these shrinkages being measured at a temperature about 5° C.

Abstract: A metallocene corresponding to the formula wherein M is a group 4 transition metal, each Y is, independently, selected from the group of halogen, hydrocarbyl and hydrocarbyloxy, R1, R4 are, independently, selected from the group of hydrogen, hydrocarbyl, hydrocarbyloxy, R2, R3, R5, R6, R7, R8 are, independently, selected from the group of hydrogen, hydrocarbyl, hydrocarbyloxy, with the provision that, respectively, R2 and R3, R5 and R6, R7 and R8 can be linked to each other.