Abstract: It is provided a multilayer tube having a layer containing a specific aliphatic polyamide composition and a layer containing an ethylene/vinyl acetate copolymer saponified product, and the both layers being disposed adjacent to each other, wherein the aliphatic polyamide composition contains an aliphatic polyamide having a melting point of a specific value or less and having a ratio of the number of a methylene group(s) to the number of an amide group(s) of a specific value or more, an absolute value of a difference of solubility parameter SP values of the aliphatic polyamide and a polyamide other than the above is in a specific range, and containing the aliphatic polyamide and an elastomer polymer which contains a constitutional unit derived from an unsaturated compound having a carboxyl group and/or an acid anhydride group.

Abstract: Provided is a polyamide elastomer composition having excellent stability in various molding and excellent dyeing properties as well as excellent color fastness properties. A polyamide elastomer composition which comprises a polyamide elastomer and a phosphorous acid compound, wherein the polyamide elastomer comprises constituent units 1 derived from a diamine compound represented by the formula (1) below, constituent units 2 derived from an aminocarboxylic acid compound represented by the formula (2) below or a lactam compound represented by the formula (3) below, and constituent units 3 derived from a dicarboxylic acid compound represented by the formula (4) below, wherein the content of the phosphorous acid compound in the polyamide elastomer is 0.02 to 0.15% by mass, and wherein the polyamide elastomer has a terminal amino group concentration of 2.

Abstract: A thermoplastic resin composition composed of a thermoplastic resin and a polyamide elastomer in which the polyamide elastomer contains at least 50 weight % of a polyetheramide elastomer prepared by polymerization of a tri-block polyetherdiamine compound, a polyamide-forming monomer is an aminocarboxylic acid and/or a lactam compound, and a dicarboxylic acid compound, in which the tri-block polyetherdiamine compound has the formula (1): [each of x and y is an integer of 1 to 20, and y is an integer of 4 to 50].

Abstract: A carbon separation and collection device used for a high performance dust collector includes a water supply tube, a water pump, a high pressure negative electrode discharge device, a high pressure positive electrode discharge device, a rotary brush, a removing plate, a carbon collector, a liquid tank, and a speed change device and an exhausting tube. The two discharge devices serve to achieve a function of electrolyte. When the cleaning liquid with carbon flows into the water supply tube by using the water pump. The carbon is adhered to the high pressure positive electrode discharge device. The high pressure positive electrode discharge device is driven to rotate by the speed change device. The carbon is moved from the high pressure positive electrode discharge device by the rotary brush and removing plate. Then, the removing carbon drops into the carbon collector.

Abstract: A thermoplastic resin composition composed of a thermoplastic resin and a polyamide elastomer in which the polyamide elastomer contains at least 50 weight % of a polyetheramide elastomer prepared by polymerization of a tri-block polyetherdiamine compound, a polyamide-forming monomer is an aminocarboxylic acid and/or a lactam compound, and a dicarboxylic acid compound, in which the tri-block polyetherdiamine compound has the formula (1): 1

Abstract: A high performance dust collector has a main body. The main body includes a suction tube, a discharging electrode, a discharging plate, a dust accumulating electrode, and an exhaust tube. When exhaust gas from the burnt light or heavy diesel oil enters into the suction tube, since the exhaust gas passes through the discharging electrode and the discharging plate with negative charges, the coal particles in the exhaust gas become anions. When the waste gas passes through the metal net transfer belt, the coal particles with anions will adhere to the metal net transfer belt since the dust accumulating electrode is connected to a positive voltage end. Thereby, air exhausted from the exhaust tube has been cleaned and thus has no coal particles.

Abstract: A power operated toothbrush including a brush supporting arm which is pivoted on two crank means. The distance between a crank shaft and a crank pin of one of the crank means is continuously changed so that the turning motion or oscillatory motion of a brush member which is mounted on an end of the brush supporting arm can be produced and one of the motions can be continuously changed to the other.

Abstract: Grid elements are provided between a dust collecting plate and discharge electrodes in a dust collecting apparatus. The grid elements are arranged in the form of a drainboard in parallel with the dust collecting plate. AC voltage is applied to the discharge electrodes so that the voltage induced in the grid elements is utilized for collecting dust.