According to the method, a tube (2) is produced by spirally winding up strips of cardboard and the inner face of the tube (2) is coated with an impermeable product, then the helical furrow which results from the space remaining between the turns of the first wound-up strip is filled with impermeable product so as to obtain an inner surface which is perfectly uniform and a wall which is entirely pr...

The rack (1) for supporting bobbins (2) of filament is made up of several superposed rows of bobbins (2) mounted on spindles (X-X'). The rack (1) has a zone (3) for intermediate storage of bobbins (2) in which said bobbins are placed next to each other on a support (4), a conveyor (7, 8) being provided for automatically conveying the bobbins (2) to the storage zone. To be used for rationalizing th...

A composite catalyst which contains: - a zeolite of MFI structure containing silicon, aluminium and/or gallium in its lattice and in which the outer surface of its crystallites has been modified after its synthesis, - a matrix, - at least one doping element chosen from the group consisting of gallium and zinc when the zeolite does not contain any gallium in its crystalline lattice, - optionall...

The film is made by deposition on a support of a reaction mixt. contg. an isocyanate cpd. obtained by polycondensn. of (A) a polyether-polyalcohol with mol.wt. 3000-6000 with (B) a di-isocyanate and (C) a chain-extending agent based on a polyether-polyol with mol.wt. 400-700 and viscosity 600-1200 mPa.s. Ratio between the free NCO gps. in (A) and the free OH gps. in (A) is around 2.

The present invention provides a liquid crystal aligning film containing as the principal constituent a polyimide resin, which comprises two or more diamines, and having a stripping load of 4.0 gf or more measured by particular conditions, and a liquid crystal display device using it. The liquid crystal aligning film has excellent resistance to liquid crystals, and does not have partial disorder o...

The invention relates to a self-contained apparatus establishing a formal identification between the user and the owner of a means of payment, by use of a confidential code related to the account number of the owner. The apparatus checks the compatibility between the code provided by the customer and a theoretical code calculated by the apparatus according to a secret algorithm corresponding to th...

PURPOSE: To reduce a cost and to improve a recovery efficiency of a resin by recovering the resin from a mixed liquid generated by dissolving a core of an injection molding becoming a water soluble resin, mixing it with a raw material resin at a predetermined ratio, and recycling it. CONSTITUTION: The method for recycling a water soluble resin comprises the steps of dissolving a water soluble resi...

A composition capable of being converted into a foam, comprising a mixture based on a phenol-aldehyde resin, an acid catalyst, dichlorofluoroethane and a surfactant, is characterised in that it essentially consists, per 100 parts by weight of phenol-aldehyde resin, of: - not more than 14 parts by weight of dichlorofluoroethane, - not more than 14 parts by weight of organic acid catalyst, a...

The invention relates to a coating composition for PVC profiles, based on a binder, a crosslinker and a thermoplastic powder. It is particularly useful for coating PVC profiles for windows, shutters and doors. The PVC window/door frames thus coated have exceptional impact, abrasion, friction and weather resistance.

L'invention concerne un appareil de diagraphie destiné à être déplacé dans un forage, comprenant un corps allongé, un patin de mesure destiné au contact avec la paroi du forage, un dispositif de support du patin monté pivotant sur un côté du corps, et des moyens pour appliquer le patin contre la paroi du forage.
L'appareil selon l'invention est caractérisé par le fait que le dispositif de...

The present invention consists in a connection arrangement between at least one pair of conductors that pass through respective walls (6). Each wall (6) is made of insulating material and the two walls are connected together via a peripheral sealing gasket received in a groove (7') and delimiting an empty space between the walls which is filled with dry air. The connection made in this way is smal...

La présente invention concerne de nouveaux intermédiaires de préparation de la vitamine A et des caroténoïdes répondant à la formule (II) suivante:
(CF DESSIN DANS BOPI)

ainsi que leur procédé de préparation et leur utilisation.

La présente invention concerne de nouveaux intermédiaires de la préparation de la vitamine A et des caroténoïdes répondant à la formule (I) suivante:
(CF DESSIN DANS BOPI)

ainsi que leur procédé de préparation et leur utilisation.

A link piece for bony elements comprises a central portion and at least two anchoring portions rigidly connected to the central portion. The central portion is made of a shape memory effect material and the central portion comprises a central hole, whereby a shape variation of this central portion causes a variation of the distance between the at least two anchoring portions while these at least t...

- The invention relates to a coating composition for dental casting. - The subject of the invention is a coating composition for dental casting, comprising anhydrous magnesia and monoammonium hydrogenphosphate (dihydrogenphosphate), characterised in that it additionally contains one or a number of finely ground crystals or fragments from the group consisting of zircon, chromite, olivine and grog...

The main patent application describes a method and a device for thermal regulation of fluidised or mobile beds of pulverulent solids, the device including a fluidised or mobile bed heat exchanger. According to the invention, a pulverulent solid is made to flow essentially from the base of an enclosure in the heat exchanger, including an internal separating partition which defines two elongate adja...

This prosthesis is of the type comprising a metal cap (3) in which is engaged an insert (4) made of a material which promotes sliding. According to the invention: - the concave wall of the cap (3) and the convex wall of the insert (4) are of spherical shape so as to permit the multidirectional clearance of the insert (4) when it is engaged in the cap (3); - the cap (3) has a curved tab (5) which...

In a method of manufacturing a labelling sleeve by means of a cut and weld operation on a thermal plastic sheet, the weld line (2) is positioned inside the sleeve by reversing the latter, or the weld is made internally.

A nonwoven (1) comprising two outer fiber layers (3, 4) and at least one inner fiber layer (2) having a different composition from that of the outer layers (3, 4). The nonwoven (1) comprises structural fibers (7, 8) and binding fibers (5, 6), said binding fibers (5, 6) at least partially consisting of a polymer with a lower melting point than the structural fibers (7, 8). Said nonwoven (1) is dens...

It comprises on its lower surface (3a), which is situated opposite the surface (3g) receiving the knee joint, at least one recess (3b, 3c) of oblong shape and open at one end for the positioning of a metal dish (4) inside which a shock-absorbing block (5) made of plastic has been introduced beforehand. ;

Il comprend sur sa face inférieure (3a) opposée à celle (3g) recevant l'articulation...