Abstract:
A run flat tire wheel assembly having a flat run support formed by a ring-shaped metal shell and rubbery elastic members in a tire rim cavity, said tire wheel assembly improving bondability between the ring-shaped metal shell and rubbery elastic members by making said rubbery elastic member from a rubber composition including 100 parts by weight of a diene-based rubber, 40 to 90 parts by weight of carbon black, 3 to 8 parts by weight of sulfur, 0.1 to 1 part by weight of an organic acid cobalt salt in terms of content of cobalt element, 0.1 to 3 parts by weight of a phenylene-diamine-based antiaging agent, and 1 to 6 parts by weight of a resol-type alkylphenol resin.
Abstract:
In a thermoplastic elastomer having a matrix phase of a thermoplastic resin and a domain phase of rubber particles at least a part of which is crosslinked, use is made of rubber particles at least a part of which is conductive to provide a conductive thermoplastic elastomer composition having a volume resistivity that can be controlled over a wide range of from a conductive region (104 ((&OHgr;·cm) or less) to an insulting region (1013 (&OHgr;·cm) or more).
Abstract:
Rubber compositions for hose production having excellent scorch resistance, extrudability, moisture impermeability, weatherability (ozone resistance), and compression set resistance, as well as a hose produced therefrom, and in particular, a refrigerant hose and its production process are provided. More illustratively, a composition comprising (A) a brominated copolymer of an isomonoolefin and a p-alkylstyrene (PMS) wherein PMS content, bromine (Br) content, and Br/PMS weight ratio are within particular ranges; (B) zinc white; and (C) a brominated alkylphenol resin, and a hose wherein such composition is used for the inner tube and/or the outer cover are provided. Also provided are a composition comprising (A) the brominated copolymer rubber and (D) an inorganic laminar compound; a hose produced by using such composition for the inner tube; and a process for producing a refrigerant hose from such a composition by in-die drawing process.
Abstract:
A rubber composition having high adhesiveness to a metal, high modulus, high set resistance and high heat resistance, comprising raw material rubber, 2,4-dimercapto-6-substituted-1,3,5-triazine and a polymer having epoxy groups crosslinkable with the raw material rubber; a process for producing the rubber composition exhibiting adhesion stability, by controlling temperature of mixing step when crosslinking the rubber composition with an organic crosslinking agent; and a hose having excellent heat resistance and sufficient modulus and compression set resistance, wherein an inner tube and/or outer cover comprise the rubber composition and a reinforcing layer comprises brass-plated steel wires. Further, a compounding agent having good handling property comprising triallyl isocyanurate or the like supported on silica (solidified product), obtained by heat treating a mixture of triallyl isocyanurate or the like and silica, and a rubber composition having high modulus while maintaining high heat resistance, containing the same.
Abstract:
A polymer composition for a tire having an air permeation coefficient of 25×10−12 cc·cm/cm2·sec ·cmHg (at 30° C.) or less and a Young's modulus of 1 to 500 MPa, including (A) at least 10% by weight, based on the weight of the total polymer component, of at least one thermoplastic resin having an air permeation coefficient of not more than 25×10−12 cc·cm/cm2·sec·cmHg (at 30° C.) and a Young's modulus of more than 500 MPa and (B) at least 10% by weight, based on the total weight of the polymer component, of at least one elastomer component having an air permeation coefficient of more than 25×10−12 cc·cm/cm2·sec·cmHg (at 30° C.) and a Young's modulus of not more than 500 MPa, wherein the total amount (A)+(B) of the component (A) and the component (B) is not less than 30% by weight based on the weight of the total polymer component, and a pneumatic tire obtained therefrom.
Abstract:
A thermoplastic elastomer composition which, when used for the inner tube and/or outer cover of a hose, can improve the hose flexibility at an ordinary temperature and low temperature, oil resistance, and cold resistance and can reduce the production costs since it does not require a vulcanization step and a hose having said properties using this elastomer composition for its inner tube and/or outer cover and a process and apparatus for the production thereof.
Abstract:
A pneumatic tire having an air permeation preventive layer comprising a low permeability thermoplastic elastomer composition comprising a thermoplastic elastomer having a thermoplastic resin composition as a continuous phase and a rubber composition as a dispersed phase, in which a barrier resin composition is contained, which low permeability thermoplastic elastomer composition has a phase structure in which the barrier resin composition is dispersed in the form of a flat state in the thermoplastic elastomer, is abundant in flexibility, is superior in gas permeation preventive property, and enables the tire to be reduced in weight.
Abstract:
Rubber compositions having high tensile modulus at 100% and strong metal adhesion. The rubber compositions include chlorinated polyethylene rubber and/or its derivative reformed with maleic anhydride with from 0.2 to 10 parts by weight per 100 parts of the rubber of a 2,4,6-trimercapto-1,3,5-triazine dicyclohexylamine salt.
Abstract:
A static random access memory comprising a memory cell array, a plurality of peripheral circuits, first and second power-supply voltage lines, a bonding pad, and a level-shifting circuit. The array has static memory cells each having resistors functioning as load elements. The peripheral circuits control the writing of data into, and the reading of data from, the static memory cells. The first power-supply voltage line applies a first power-supply voltage to the peripheral circuits. The bonding pad is connected to the first power-supply voltage line. The second power-supply voltage line applies a second power-supply voltage to the static memory cells. The level-shifting means is connected between the first and second power-supply voltage lines, for shifting the level of the first power-supply voltage and applying the level-shifted voltage to the static memory cells via said second power-supply voltage line.
Abstract:
An exposed surface of a semiconductor substrate with an integrated injection logic semiconductor region having a first conductivity injector region of which one surface is exposed, a first conductivity type base region of which part of the surface is exposed, and a second conductivity type collector region of which one surface is exposed and the remaining surfaces are surrounded by the base region, is covered with SiO.sub.2. Contact holes are holed in the SiO.sub.2 layer at the locations facing the injector regions, the base regions and the collector region. Through the contact holes, first conductivity type ions are injected into the semiproduct of the semiconductor device. As a result, the surface impurity concentrations of the injector region, the base region and the collector region are 1.times.10.sup.19 /cm.sup.3 or more. Interconnection electrodes of, for example, MoSi.sub.2 make ohmic contact with the respective regions.