Composite membranes, processes for their preparation and their use A b s t r a c t Composite membranes of a macroporous fillercontaining membrane of at least two incompatible polymers and a pore-free polyurethane membrane applied thereto exhibit an improved action in the removal of benzenes optionally substituted by lower alkyl radicals, hydroxyl, chlorine or bromine from their mixtures with aliph...

PATENT POLYIMIDE OLIGOMERS AND BLENDS AND METHOD OF CURING A preferred class of polyimide oligomers include (1) linear, difunctional crosslinking oligomers prepared by condensing an imidophenylamine end cap with a lower alkylene diamine or a polyaryldiamine such as 3,3'-phenoxyphenyl-sulfone diamine and with a dianhydride, particularly 4,4'-phenoxyphenylsulfone dianhydride; and (2) multidimensiona...

PROCESS FOR PREPARING MULTIHARDNESS FOAM ARTICLES A multihardness foamed seat having side rolls comprising one or more zones of a second polyurethane foam encapsulated in a first polyurethane foam is prepared by arranging the seat mould so that the side roll well is inclined in a direction parallel to its length, introducing a liquid first foam formulation into the side roll well, and then intoduc...

A process of immobilizing environmentally noxious organic, particularly aromatic, substances by absorbing same on a layered clay mineral modified by exchange with a quaternary ammonium compound, thereby increasing the spacing between the layers and rendering the adsorption surfaces hydrophobic. After adsorption of the organic compounds the spacing between the layers of the layered clay mineral is ...

This apparatus relates to vessels composed of an inner casing (3), of an outer casing (4) and of at least one metal base (5-10) which comprises a cylindrical endpiece arranged substantially in the longitudinal axis of the vessel. According to the invention, it comprises, on each end piece (7), on the one hand a frustoconical metal cup (22) of the same conicity as the base of the endpiece and ...

A new virus, Hepatitis C virus (HCV), which has proven to be the major etiologic agent of blood-borne NANBH, was discovered by Applicant. Reagents for isolating, amplifying, and detecting HCV polynucleotides are provided. These reagents are oligomers comprised of polynucleotide sequences which are capable of forming hybrid structures with HCV target polynucleotide sequences.

AEROSOL PACKAGE HAVING COMPRESSED GAS PROPELLANT AND VAPOR TAP OF MINUTE SIZE Aerosol package employs a compressed gas such as carbon dioxide or nitrous oxide as propellant and provides a tiny vapor tap in the aerosol valve body to permit, in a restricted controlled way, the passage of the propellant gas into the aerosol valve. The diameter of the vapor tap is preferably in the range of only about...

The present invention relates to a method of manufacturing a fiber reinforced plastics material by a dry forming method. By this method the fibers are opened by carding, a web is formed of the fibers, pulverous matrix is dosed onto the web, the layers of the web are superimposed by folding, the layered web is heated, pressed and cooled.

Methods and apparatus for determining the curvature of a surface by use of multiple discrete triangulation sensors are described. Robustness in the face of an extreme manufacturing environment is achieved by placing a triangulation light source and a detector at a remote, environmentally controlled location. Light is relayed from the remote source to each sensor head by a single mode optical fiber...

A process and apparatus for the finish machining of the tooth surfaces of cylindrical gears by hob peeling has the right and left tooth surfaces produced by separate machining operations to produce tooth modifications e.g. crowning due to the machine executing a change of centre difference and/or a change in the additional rotation of the work piece (10) relative to the tool (9) depending on the a...

A method and apparatus for improving a steam-to-steam reheat system employing the drain cooler concept in a steam turbine is disclosed. The large and complicated drain receiver of the prior art is eliminated, thereby removing a source of unreliable performance and internal flooding of MSR bundle drains. A drain cooler is utilized and its utility enhanced by installing a condensate bypass line with...

Refrigerator appliance, particularly upright freezer or the like, the bodywork of which includes, on the bottom, a hollow from which the water from the melting ice deposited therein during defrosting can be discharged by a pluggable drain which opens out into an outflow provided with a telescopically retractable tube. The telescopically retractable tube 19 of oval cross-section is provided on its ...

Disclosed is a method of forming a shaped configuration by cold forging at an end of a long element, such as the armature shaft of a starter motor for an automobile. The die used in this method has an inner space in which a section for forming the shaped configuration is provided at one end portion thereof, and the diameter of the inner space gradually increases from the shaped configuration formi...

All-trans or 13-cis retinoic acid-based aqueous gel. This gel is characterized in that retinoic acid is present, in a soluble and stable state, in a proportion by weight of 0.025 to 0.2 % by weight, in the presence of 0.2 to 1.8 % by weight of beta -cyclodextrine and a hydroxylated organic base in a proportion such that the pH of said gel is of between about 7.0 and 8.5, the gelling agent being p...

Particulate sodium nedocromil with a weight averaged diameter lying between 5 and 10 micrometres is useful as a drug for inhalation. The particulate sodium nedocromil of the present invention is especially advantageous because of its dispersion, that is the proportion of particles which are capable of penetrating deep into the lungs is markedly greater than with the dispersion of conventional powd...

A sewing machine includes a base, a sewing device installed on this base to sew material, and a pair of material setting/transfer assemblies provided on the base. Each material setting/transfer assembly comprises a sewing portion setting mechanism fixed on the base which is able to position portions of the material to be sewn including tucking ends; a transfer mechanism mounted on the base movably...

A planar filter array (1,2) is completely isolated from mechanical and thermal stresses by an arrangement of resilient planar gaskets (15, 16) which sandwich said array and electrical contact springs (3) which also serve to isolate the array from mechanical and thermal stresses and which permit electrical connection of the individual filters in the array to external devices. The filter array and g...

For simultaneous control of cleaning and hygiene, in particular in the food industry and hospitals, an aqueous solution of an optionally fluorescent dye or a combination of such dyes which bind on organic material, including microorganisms, and colour them in the process is applied onto the surfaces which are to be cleaned. An organic contamination, if any, of the surfaces will then show itself by...

2057008 9014591 PCTABS00002 For simultaneous control of cleaning and hygiene, in particular in the food industry and hospitals, an aqueous solution of an optionally fluorescent dye or a combination of such dyes which bind on organic material, including microorganisms, and colour them in the process is applied onto the surfaces which are to be cleaned. An organic contamination, if any, of the surfa...

2033072 9014742 PCTABS00002 An induction furnace is described which is capable to heat a thin strip from a continuous casting apparatus throughout the furnace itself after a previous rolling, at a homogeneous temperature adapted to the subsequent rolling steps. The induction furnace of the present invention comprises, in a known manner, an array of toroidal coils being fed at M.F., with intermedia...