The apparatus is noteworthy in that it comprises, in a compact and simple form, and in combination: - a container 2 the bottom 2c is surmounted by a motorised rotary platform 4 with an abrasive upper surface 4c or 5e, and the fixed internal wall 2a of which also has an abrasive surface 26. ;

L'appareil est remarquable en ce qu'il comprend sous une forme compacte et simple et en combinais...

L'invention se situe dans le domaine des matières plastiques et concerne des copolymères séquencés et greffés.

L'invention a également pour objet la synthèse de ces copolymères séquencés et greffés. Ils sont obtenus par greffage et polymérisation radicalaires d'une composition monomère sur des polymères-tronc dont les motifs présentent une répartition séquentielle.

L'invention conce...

The binding has pairs of rotatable rollers with inclined spindles which are suitable for support on at least one of the circumferential sides which are formed by the circumferential side of the sole and the circumferential base of the shaft, which means that an assembly of roller contacts is formed for the lateral and longitudinal mounting of the end of the boot. The pairs of rotatable rollers are...

The invention relates to a safety binding for a downhill ski, which is intended to hold the end of a boot. It comprises a base 4 securely connected to the ski, a body 5 which is movable vertically with respect to the base 4 about a transverse axis 6. A jaw 9 is articulated laterally with respect to the body 5. The binding comprises a device for compensating for a forward fall and a device for comp...

Polymeric compositions are provided in which perfluoropolyethers have been solubilized in non-fluorinated solvents by combining them with a solubilizing agent such as azotic conjugated compounds, and phosphorylated compounds. Typical of the perfluoropolyethers is +TR Typical of the solubilizing agents is phosphorylated methacryloyloxyhydroxypropylisophthalate. The perfluoropolyet...

The invention relates to a composition suitable for the manufacture of cling film, comprising 80 to 99% by weight of at least one polymer or copolymer of ethylene having a density less than or equal to 0.935, and from 1 to 20% by weight of the total composition comprising: (a) A cling agent chosen from amongst liquid polybutenes and atactic polypropylenes and (b) At least one crystalline wax in a ...

Polyetheramide-imide polymer compsns. are obtd. by reacting trimellitic acid or its reactive derivs. with aromatic diamines contg. ehter bonds of formula (I), and dissolving aromatic polyetheramideimide polymers having a reduced viscosity of above 0.30 dl/g obtd. in ether cpd. and/or alicyclic ketone cpds. having a b.pt. of below 180≰C. In formula, R1-R4 is H, lower alkyl, lower alkoxy, Cl or Br;...

The recording disc comprises a substrate having a tracking servo groove of spiral or concentric pattern on one surface. The servo groove has a constant depth and a variable width which varies to allow generation of a position indicating signal. An erasable recording layer is deposited on the surface of the substrate to store information signals. The recording disc is fabricated by a method invo...

PURPOSE:To make the cable excellent in stabilization of superconductive characteristics, to make it small in AC coupling loss at AC current application, and to enable miniaturization and lightening by compounding stabilizing material made of pure copper in a superconductive cable, and making metallic ground where superconductive fibers are dispersed and arranged contain magnetic elements. CONSTITU...

PURPOSE:To break pairs of electrons, to suppress coupling currents at AC application, and to decrease loss, even if exudation of pairs of superconductive electrons has occurred in the metallic ground around the superconductive filaments at AC application, by making metallic ground which surrounds superconductive filaments contain magnetic elements. CONSTITUTION:A compound substance 13 which is equ...

PURPOSE:To suppress coupling currents tending to flow to metallic ground at AC application, to decrease AC loss, and to enable the content of magnetic elements to be adjusted by providing plural storage parts in parent material so as to make the metallic ground wherein superconductive filament are dispersed and arranged contain magnetic elements. CONSTITUTION:Long parent material 10 which consists...

PURPOSE:To enable oxide superconductive wire rod excellent in superconductive characteristics to be manufactured efficiently by diameter reduction processing and heat-treating a compound billet which is obtained by fusing a material oxide to become a superconductor and then solidifying it into a bar-shaped ingot. CONSTITUTION:A bar-shaped ingot of material oxide to become a superconductor is made ...

PURPOSE:To enable oxide superconductive wire rod excellent in superconductive characteristics by pouring an oxide to become a superconductor as fused liquid into a metallic vessel to become sheath material and solidifying it into a compound billet, and degressively processing and heat-treating it. CONSTITUTION:First, a martial oxide to become a superconductor is put in a crucible 1, and this is he...

Poly(p-phenylene-2,5,furandicarbonamide), with an inherent viscosity of at least 1.5 dl/g measured at 30 &loz& C on a 5 g/dl solution in 98 % sulphuric acid, is prepared by performing the condensation at 100 &loz& C at most and using a molar excess of triphenylphosphite of 1-20 % in respect to the total amounts of p-phenyleediamine and 2,5-furandicarboxylic acid which are started from. Anisotropic...

Production of a compression or sinter-mouldable powder composition of polyethersulphone homopolymer having repeat unit -Ph-O-Ph-SO2- (-Ph- is p-phenylene) and a powder filler by (a) preparing a viscous but stirrable dispersion of the filler in dichloromethane which dispersion contains said polyethersulphone, (b) stirring the dispersion to produce a soft solid which breaks down into a powder, and (...

The piston for hydraulic brakes, especially for vehicles, consists of a beaker-shaped piece (23) with a base (25) which has a central protuberance (101) forming a connection (100). The beaker-shaped piece (23) fits inside a hydraulic brake cylinder (17) and has a thermally insulating core (26) partly fitting in the beaker (23) and sticking out beyond it and fixed to the beaker (23) by means of the...

Process for obtaining an acrylic-based adhesive, and a process for coating the adhesive thus obtained onto a synthetic surface such as a polyester surface. The process in accordance with the invention consists in: -irradiating approximately 0.5 to 1 % by weight of the acrylic-based adhesive mass with approximately 2 Mrad of beta radiation; -mixing the said irradiated adhesive mass with the non...

The present invention relates to a method and device for logging in a non-eruptive oil-production well. The method is characterised in that the well is activated to make it produce effluents, on either side of first measurement means 10 and in that the said measurement means 10 are used to treat at least part of the effluents coming from upstream 18 of the flow, relative to the said measurement me...

Curable coating compositions comprising a conventional curable coating material and a cured silicone rubber powder, which has uniformly dispersed therein from about 1 to 20 percent by weight of an epoxy group-containing compound or an amino group-containing compound, are disclosed. When cured, the compositions of the invention provide durable mat surface coatings on buildings, structures and machi...

The invention relates to a container for the storage of low-temperature liquids, especially liquefied gases, consisting of an outer container made of reinforced or prestressed concrete, equipped perhaps with a steel dome, and an open inner steel tank, intended to hold the liquid, the steel tank resting on an insulator; an annular space is provided between the two tanks, this space containing a gra...