PURPOSE: To obtain finely divided powder of specific granulometries by putting a material having granulometry below 100 &mu m into a bath of cryogenic or cryoscopic liquid inert to this material and subjecting the material to restructur ing, then removing the liquid by evaporation or the like in a method for restruc turing the material described above. CONSTITUTION: In restructuring the material h...

An internal lining for ducts (C) is provided by introducing into one end of the duct an assembly (E) which comprises a sleeve (5) and an inflatable system (2) and which is provided with heating means for applying a sheath (1) impregnated with a resin against the inner wall of said duct (C). After partial polymerization at least of the resin, the sheath (1) adheres to the inner wall of the duct. Th...

An apparatus for jacketing accumulator plates has a delivery spool 1 for separator strip 8, a cutting apparatus 15, for cutting sections 22 of separator strip 8 to length, in which the separator strip 8 is cut without interrupting the movement of cutter blocks and is notched in the region of the folding line, and a conveying apparatus 29 for placing plates onto the sections 22 of separator strip, ...

A process for preparing light-weight, insulating and semi-rigid or rigid elements, essentially comprises impregnating a porous supple material having an internal structure with preferentially open cells, with the desired quantity of a solution of a compound selected from the group comprising isocyanates, and having consequently in its formula at least a -NCO group, the material optionally having t...

PURPOSE: To guarantee firm holding or putting on a band, simultaneously avoid troublesome friction of the sole of a ski shoes against a holding body by making one band adapt for in a groove and the other band adapt for height of the upper edge of a restricting wall of the groove. CONSTITUTION: A supporting device of a sole 100 has a supporting body 102 to be fixed on an upper surface of a ski boar...

PURPOSE: To efficiently activate a halogenation catalyst by keeping the catalyst in an acidic nonoxidizing medium or reducing medium at 300 to 450 deg.C to control the content of a catalyst metal to 0.15 to 1.0 wt.%. CONSTITUTION: After one or more kinds of platinum group metals are deposited on a carrier comprising at least one kind of refractory inorg. oxide, at least two kinds of Lewis acid typ...

A catalytic cracking composition comprises a zeolite-containing cracking catalyst and either (a) a physical mixture of a phosphorus-containing alumina or (b) an alkaline earth phosphorus compound-containing alumina. The composition is useful in a hydrocarbon cracking process performed in a catalytic cracking zone, and the components of the composition may be added to the zone separately and/or in ...

PURPOSE:To prevent the degradation in display grade by the electrification of spacers by setting the specific resistance on the surfaces of the spherical spacers between a pair of substrates at about the same level as the specific resistance of a liquid crystal. CONSTITUTION:The spacers 6 are formed by mixing carbon of about 0.01mum grain size at the time of reaction of the suspension polymn. of t...

Smooth, glossy, thin films based on linear polyethylene with Mw > 4 X 10<5>, preferably above 8 x 10<5>, having a strength above 1 GPa, a modulus above 20 GPa, and a FEM value above 150 KJ/m, and having a thickness of below 25 mu m, preferably below 2 mu m, an opacity below 15% and a water vapour transmission value below 0.6. Such films can be prepared by spinning or extruding a semidiluted solu...

A process for the production of a moldable fibre-containing cementitious composition in which at least one mat of a water-insoluble fibrous material is contacted with at least one surface of a shaped article of a moldable cementitious composition, the cementitious composition comprising a homogeneous mixture of at least one hydraulic cement, water in a proportion of not more than 25% by weight of ...

PURPOSE: To make an emulsifier achieve storage stability with a small use amt. of the emulsifier when the emulsion of a polysiloxane or the emulsion of the polysiloxane and paraffin oil mixture is produced, by using an alkylpolyglycoside as the emulsifier. CONSTITUTION: When a polysiloxane emulsion or a polysiloxane and paraffin mixture emulsion is produced, an alkylpolyglycoside expressed by form...

Silyl-functional fumarates are formed through the reaction of a methyl ester of a maleate with a chloroalkyl or chloroaryl silane or disiloxane in the presence of an amine or phosphine catalyst. These materials are useful as adhesion promoters for polyolefins.

PURPOSE: To determine the distribution of particle size of substance by connecting a stirring means with a gas supply means and providing to the stirring means a plurality of filtering means for separating the substance based on its particle size. CONSTITUTION: The cap assembly for stirrer is connected with an air supply means. The assembly is communicated to a sieve 12 with tar. A blank is placed...

PURPOSE:To manufacture a composite molding provided with a film superior in weather resistance on the surface of a polynorbornene resin base material with reactive injection molding (RIM) method, by a method wherein a weather- resistant polymeric film is formed on the inside of a mold, a reactive solution for mass polymerization containing a norbornene monomer and metathesis catalyst is fed into t...

PURPOSE:To increase the critical temp. of a BiSrCaCu2OX type superconducting material and to extend the application range by substituting an element selected from among Pb, Ga, In and Tl for a specified amt. of Bi in the superconducting material. CONSTITUTION:An oxide selected among Pb2O3, Ga2O3, In2O3 and Tl2O3, Bi2O3, SrCO3, CaCO3 and CuO are weighed so as to obtain a compsn. represented by the ...

PURPOSE:To enhance suspension effect and to increase critical current density by adding a specified additive to calcined powder of a superconducting material and carrying out molding and sintering under special conditions. CONSTITUTION:An additive selected among Sr (compd.), Sn (compd.) and Bi (compd.) is added to calcined powder of an Lu-Ba-Cu-O type superconducting material contg. Lu, Ba and Cu ...

There is provided a tool comprising a fully dense sheet of diamond brazed to a substrate. The diamond sheet is manufactured by a chemical vapor deposition process and has a thickness of at least about 0.1 mm. The braze material is preferably a carbide-former. A method for making such tools is also provided.

PURPOSE:To prevent the deterioration of a bulky oxide superconductor with the lapse of years by a simple method by forming a protective coat contg. setting resin on the surface of the superconductor. CONSTITUTION:A protective coat for preventing a secular change contg. setting resin is formed on the surface of a bulky oxide superconductor. By covering with the protective coat, the superconductor c...

PURPOSE:To prevent the deterioration of a bulky oxide superconductor with the lapse of years by a relatively simple method by forming a protective coat contg. a specified metal oxide on the surface of the superconductor. CONSTITUTION:A protective coat for preventing a secular change contg. one or more kinds of metal oxides selected among the oxides of In, Mo, Bi, V, Nb, Pb, Te, Sn, W, Ti, La, Ni, ...