Abstract: A radio base station (1), which is to be pre-blockaded, transmits a pre-blockade initiate notification to radio base stations (2A-2F) neighboring the radio base station (1). Further, the radio base station (1) reduces the transmission power thereof at a predetermined reduction rate at a initiation time of the pre-blockade. Meanwhile, each of the radio base stations (2A-2F) receives the pre-blockade initiate notification and increases the transmission power at a predetermined increase rate at the initiation time of the pre-blockade, the absolute value of predetermined increase rate being equal to that of the predetermined reduction rate at the radio base station (1).

Abstract: A radio communication system including a threshold setting unit, which sets a channel assignment threshold for each respective communication channel thereupon, and a threshold setting unit, which sets a channel assignment threshold for each respective communication channel thereupon, for carrier sensing. The threshold setting unit employs a first random number, which is generated, based on an unique value of a radio base station, on a per communication channel basis, to set a first channel assignment threshold on the per communication channel basis. The threshold setting unit employs a second random number, which is generated, based on an unique value of a radio base station, on a per communication channel basis, to set a second channel assignment threshold on the per communication channel basis.

Abstract: A capacitor includes a metal case and a terminal plate. The metal case accommodates a capacitor element together with a driving electrolyte and is joined to one of the electrodes of the capacitor element at its inner bottom surface. The terminal plate is joined to the other electrode at its inner surface so as to seal the opening of the metal case. The terminal plate is provided with a pressure regulating valve also functioning as a driving-electrolyte filling hole. The pressure regulating valve includes a ring-shaped elastic member which is pressed into the wall formed on the terminal plate.

Abstract: A storage cell includes a storage element including first and second electrodes which are opposite to each other in a predetermined direction, a first terminal bonded to the first electrode, a second terminal bonded to the second electrode, and an outer resin covering the storage element to expose an outer surface of the first terminal and an outer surface of the second terminal from the outer resin. The storage element has substantially a rectangular shape viewing from the predetermined direction. The outer resin has substantially a rectangular shape viewing from the predetermined direction. The outer resin has first and second surfaces opposite to each other, and has a third surface connected with the first surface and the second surface. The first terminal is exposed on the first surface of the outer resin. The second terminal has a shape extending beyond the storage element along the first and third surfaces, and is exposed on the first surface.

Abstract: A capacitor includes a metal case and a terminal plate. The metal case accommodates a capacitor element together with a driving electrolyte and is joined to one of the electrodes of the capacitor element at its inner bottom surface. The terminal plate is joined to the other electrode at its inner surface so as to seal the opening of the metal case. The terminal plate is provided with a pressure regulating valve also functioning as a driving-electrolyte filling hole. The pressure regulating valve includes a ring-shaped elastic member which is pressed into the wall formed on the terminal plate.

Abstract: The present invention provides piperazine pyrophosphate represented by chemical formula (I) which has a sodium content of 10 ppm or lower and a process of producing the same. The piperazine pyrophosphate has high purity and provides a flame retardant composition exhibiting excellent flame retardancy. The process includes dehydration condensation of piperazine diphosphate and is able to produce the piperazine pyrophosphate at low cost.

Abstract: An improved phenoxyphosphazene compound is produced by treating a phenoxyphosphazene compound with (a) at least one adsorbent selected from activated carbon, silica gel, activated alumina, activated clay, synthetic zeolite and macromolecular adsorbents, (b) at least one reagent selected from metal hydrides, hydrazine, hypochlorites, thiosulfates, dialkyl sulfuric acids, ortho esters, diazoalkanes, lactones, alkanesultones, epoxy compounds and hydrogen peroxide, or (c) both the adsorbent and reagent, thereby reducing the acid value of said phosphazene compound to lower than 0.025 mgKOH/g.

Abstract: The epoxy resin of the invention comprises (A) an epoxy resin, (B) at least one member selected from the group consisting of a phenolic hydroxyl group-containing compound, a urea resin and a melamine resin, (C) a crosslinked phenoxyphosphazene compound, and (D) an inorganic filler powder, the amount of component (C) being in the range of 0.01 to 30 wt. % based on the total amount of components (A), (B) and (C), and the amount of component (D) being in the range of 60 to 98 wt. % based on the total amount of components (A), (B), (C) and (D). The epoxy resin composition of the invention and a molded product are halogen-free and antimony-free and are excellent in flame retardancy. When an element for an electronic part such as LSI and VLSI is encapsulated by the epoxy resin composition of the invention, the obtained electronic part is outstanding in heat resistance, moisture resistance, thermal impact resistance and like properties.

Abstract: An improved phenoxyphosphazene compound is produced by treating a phenoxyphosphazene compound with (a) at least one adsorbent selected from activated carbon, silica gel, activated alumina, activated clay, synthetic zeolite and macromolecular adsorbents, (b) at least one reagent selected from metal hydrides, hydrazine, hypochlorites, thiosulfates, dialkyl sulfuric acids, ortho esters, diazoalkanes, lactones, alkanesultones, epoxy compounds and hydrogen peroxide, or (c) both the adsorbent and reagent, thereby reducing the acid value of said phosphazene compound to lower than 0.025 mgKOH/g.

Abstract: A flame-retardant resin composition comprising a phosphazene flame retardant and a polyester resin, wherein the flame retardant is bonded to the molecules of the polyester resin via the ester group thereof, can retain a high flame retardance for a prolonged term with little or no vaporization with time and is excellent in flame retardance, impact resistance, properties and processability.

Abstract: A powdery flame retardant which is obtained by mixing a flame retardant which is liquid or a viscous solid at ordinary temperature with an inorganic fibrous substance to adhere or adsorb the retardant to the fibrous substance, and which comprises 5 to 70 wt. % the flame retardant and 95 to 30 wt. % the fibrous substance. The powdery flame retardant can be easily handled because it is a powder, and is obtained by a simple and industrially advantageous method. It produces a remarkable effect that the performance of the liquid or viscous flame retardant is not impaired.

Abstract: The present invention has an object to provide a flame retardant excellent in heat resistance and hard to cause juicing or mold deposits in molding. A flame retardant relating to the present invention has a feature to be made of a polymer constituted of at least one kind, as a building block, among phosphazene compounds each having, in a molecule thereof, at least one of one kind of polymerizable functional group selected from the group consisting of a vinyl group, an allyl group, an acryloyloxy group, a methacryloyloxy group, an acryloyl group, and a methacryloyl group.

Abstract: The epoxy resin of the invention comprises (A) an epoxy resin, (B) at least one member selected from the group consisting of a phenolic hydroxyl group-containng compound, a urea resin and a melamine resin, (C) a crosslinked phenoxyphosphazene compound, and (D) an inorganic filler powder, the amount of component (C) being in the range of 0.01 to 30 wt. % based on the total amount of components (A), (B) and (C), and the amount of component (D) being in the range of 60 to 98 wt. % based on the total amount of components (A), (B), (C) and (D). The epoxy resin composition of the invention and a molded product are halogen-free and antimony-free and are excellent in flame retardancy. When an element for an electronic part such as LSI and VLSI is encapsulated by the epoxy resin composition of the invention, the obtained electronic part is outstanding in heat resistance, moisture resistance, thermal impact resistance and like properties.

Abstract: The phenoxyphosphazene compound of the present invention is prepared by treating a phenoxyphosphazene compound with (a) at least one adsorbent selected from activated carbon, silica gel, activated alumina, activated clay, synthetic zeolite and macromolecular adsorbents, (b) at least one reagent selected from metal hydrides, hydrazine, hypochlorites, thiosulfates, dialkyl sulfuric acids, ortho esters, diazoalkanes, lactones, alkanesultones, epoxy compounds and hydrogen peroxide or (c) both the adsorbent and reagent.

Abstract: An object of this invention is to impart excellent flame retardancy to an aromatic polyamide resin without use of a halogen compound which is responsible for generation of gases harmful to the human body and without decreasing preferred properties (e.g. mechanical properties, and molding processability) inherently possessed by aromatic polyamide resins, the flame-retardant aromatic polyamide resin composition of this invention comprising (a) 100 parts by weight of an aromatic polyamide resin, (b) 0.1 to 100 parts by weight of a crosslinked phosphazene compound which is a compound crosslinked with a crosslinking group, such as phenylene groups, the crosslinking group being interposed between the two oxygen atoms left after the elimination of phenyl groups from the phosphazene compound, no free hydroxyl group being present in the molecule, the amount of all phenyl groups in the crosslinked compound being 50 to 99.

Abstract: This invention provides a flame-retardant resin composition comprising: (A) 100 parts by weight of a thermoplastic resin other than a thermotropic liquid crystal polymer, (B) 0.01 to 50 parts by weight of a thermotropic liquid crystal polymer, and (C) 1 to 30 parts by weight of a halogen-free phosphazene compound, the invention providing a novel flame-retardant resin composition which is free of the problems arising due to the presence of halogen element, the composition being excellent in flame retardancy, mechanical properties, molding processability and the like, and being unlikely to cause dripping.

Abstract: A conductive male thread (22) has a thrust bearing flank (22a) coated with an insulating paint layer (23), and a conductive female thread (12) has a thrust bearing flank (12a) formed with a conductive projection (13) to break through the paint layer (23) and bite in that flank (22a).

Abstract: A conductive male thread (22) has a thrust bearing flank (22a) coated with an insulating paint layer (23), and a conductive female thread (12) has a thrust bearing flank (12a) formed with a conductive projection (13) to break through the paint layer (23) and bite in that flank (22a).

Abstract: The present invention provides a method of producing a chlorinated rubber wherein an acidic or highly acidic chlorinated rubber cake obtained after chlorinating a rubber latex or an aqueous dispersion is subjected to fluidized drying together with a drying medium to obtain a preliminary dried powder, and the preliminary dried powder is subjected to fluidized drying again. According to the present invention, a high quality chlorinated rubber can be obtained efficiently with easy handling from an acidic or highly acidic chlorinated rubber cake obtained after chlorinating a rubber latex or an aqueous dispersion.

Abstract: The present invention provides a method of producing a chlorinated rubber wherein an acidic or highly acidic chlorinated rubber cake obtained after chlorinating a rubber latex or an aqueous dispersion is subjected to fluidized drying together with a drying medium to obtain a preliminary dried powder, and the preliminary dried powder is subjected to fluidized drying again. According to the present invention, a high quality chlorinated rubber can be obtained efficiently with easy handling from an acidic or highly acidic chlorinated rubber cake obtained after chlorinating a rubber latex or an aqueous dispersion.