A method of manufacturing a tire bead ring of the package type by winding metal wires on a form of revolution, the radially inner face of the tire bead ring having a frusto-conical shape of half angle alpha at the apex and of radius R with respect to the axis of rotation of the tire bead ring, in which a permanent circular deformation is effected on the wires prior to their winding on the form of...

PURPOSE:To obtain the sheet that is excellent in transparency, rigidity, slipperiness with stretched film and free from rain drop phenomenon in the time of molding by stretching biaxially the sheet with the skin layer containing a small quantity of inorganic powder at least on one surface of a styrene resin sheet. CONSTITUTION:A skin layer containing 0.1-2wt% of inorganic material with average gra...

A polymeric film prepared from a relatively crystalline polymer such as a copolymer of ethylene and an alpha -olefin having at least 3 carbon atoms, e.g., 1-octene (linear low density polyethylene); a relatively amorphous polymer such as low density polyethylene and a tackifying polymer such as a low molecular weight polybutene exhibits a substantially higher cling on one side than the other. A f...

A process for producing cement to be used when preparing an injection grout for prestressed concrete sheathes, comprising grinding together, at a temperature lower than 90 DEG C., Portland clinker which is free from any corrosive ions for steel, gypsum, an anhydrous water reducing additive and an also anhydrous cement set retarding agent, as well as cement obtained by means of this process and in...

A multi-layer surface-treated steel plate comprises a zinc-containing plated layer, a lithium silicate film layer formed on said plated layer and an organic composite silicate film layer composed of colloidal silica and an organic resin, which is formed on the lithium silicate film layer.

An improved artificial leg has a ball and socket ankle joint (3) connecting a foot (2) to a shin member (1). The ankle joint comprises a two-part socket (5A, 5B) enclosing a part-spherical ball member (4) with an elastic sleeve (6) sandwiched between the socket and the ball member (4) to allow resilient flexion of the foot (2) relative to the shin member (1). In order to provide relatively more re...

An improved artificial leg has a ball and socket ankle joint (3) connecting a foot (2) to a shin member (1). The ankle joint comprises a two-part socket (5A, 5B) enclosing a part-spherical ball member (4) with an elastic sleeve (6) sandwiched between the socket and the ball member (4) to allow resilient flexion of the foot (2) relative to the shin member (1). In order to provide relatively more re...

New semi-synthetic derivatives of 4''-erythromycin A and their preparation are described. The new compounds of the invention correspond to the formulae I and II in which the symbols have the meaning given in Claim 1. The compounds of formulae I and II, in which X and Y are a pair H, NH2, possess antibacterial properties and can be used as medicinal products.

A series of 4''-deoxy-4''-amino-oleandomycin antibacterial agents and their preparation from semi-synthetic 4''-deoxy-4''-oxo-oleandomycin intermediates.

A series of 4''-deoxy-4''-amino-erythromycin A antibacterial agents and their preparation from erythromycin A via 4''-deoxy-4''-oxo-erythromycin A intermediates.

PURPOSE:To improve adhesive strength between layers of polyolefine and vulcanized rubber by such an arrangement wherein the layer of polyolefine is treated by corona discharge and the surface of vulcanized rubber is treated by pseudohalogen compound and an epoxy resin adhesive is applied to one of them or both layers and then they are laminated together. CONSTITUTION:A polyolefine sheet is treated...

PURPOSE:To improve efficiency by making density of a monolithic catalyst made of a noble metal high, by forcing the outermost circumferential part, which is blocked by a retainer, not to carry a coat and a noble metal. CONSTITUTION:A cross-sectional area of the outermost circumferential part 8b out of a cross-sectional area of a monolithic catalyst 8 is blocked by a retainer 7. When an external di...

PURPOSE:To form a photosensitive material which is freely controlled of timings at which photographically useful groups are released by contg. specific compds. in the constituting layers of a silver halide photosensitive material. CONSTITUTION:The compds. (e.g.; the compds. expressed by the formula II) expressed by the formulaI(Coup is coupling component for the oxidant of color developing agents;...

PURPOSE:To provide the titled compsn. particularly with heat and oxidation stability, by mixing a specific amount of alkylthiopropionyl-hydrazinotriazine compd. with a synthetic resin. CONSTITUTION:0.001-5pts.wt. alkylthiopropionylhydrazinotriazine compd. mentioned below is mixed with 100pts.wt. synthetic resin (e.g., polyethylene) to yield the titled compsn. The compd. has a structure of formul...

PURPOSE:To prepare starch particles having excellent characteristics for the binder or disintegrator of granule or tablet, by coating beta-type starch with alpha-type starch.