Abstract: Provided are a tread rubber composition that can achieve a balanced improvement in fuel economy, wet-grip performance, and abrasion resistance, and a pneumatic tire including the composition.

Abstract: Provided are a tread rubber composition that can achieve a balanced improvement in fuel economy, wet-grip performance, and abrasion resistance, and a pneumatic tire including the composition.

Abstract: To provide a rubber composition for breaker having balanced properties among rigidity, heat resistance, adhesiveness, humid aging adhesion and elongation, and a pneumatic tire having a breaker layer or a belt layer comprising the rubber composition. A rubber composition for breaker comprises 55 to 65 parts by weight of carbon black, 5 to 15 parts by weight of silica, 3.5 to 4.5 parts by weight of sulfur, at least 0.08 part by weight of cobalt, a resorcinol resin and a methylene donor based on 100 parts by weight of a rubber component containing a natural rubber and/or an isoprene rubber as a main component.

Abstract: A rubber composition for tire and a pneumatic tire in which the rubber composition is used improve steering performance on snowy and icy roads as well as traction performance in the forward and backward directions while reducing the recycling and manufacturing cost. The rubber composition for tire contains from 0.5 to 12 parts by weight of paper relative to 100 parts by weight of a rubber component, and preferably further contains from 5 to 100 parts by weight of silica and from 2 to 15 parts by weight of short fiber relative to 100 parts by weight of the rubber component. The paper is newspaper waste. From 10 to 100 parts by weight of carbon black may further be contained relative to 100 parts by weight of the rubber component.

Abstract: In a bulb-form lamp, a threaded portion 31 of a lamp cap 5, that is, a shell 30 is made of a conductive resin. The conductive resin shell 30 and an eyelet 50 constituting the lamp cap 5 are composite parts, which are molded integrally with a lamp case 20. A part of the conductive resin shell 30 is provided with a terminal connective portion 30a projecting into the lamp case 20. The terminal connective portion 30a is connected with an electrode terminal 40 led out of a printed circuit board 13 of a lighting circuit 14 so that the conductive resin shell 30 and the lighting circuit 14 are electrically connected. By doing so, it is possible to simplify the assembly of bulb-form lamp, and to reduce an assembly cost, and further, to manufacture a bulb-form lamp having a high quality and a lamp case for the bulb-form lamp.

Abstract: To provide a rubber composition for breaker having balanced properties among rigidity, heat resistance, adhesiveness, humid aging adhesion and elongation, and a pneumatic tire having a breaker layer or a belt layer comprising the rubber composition. A rubber composition for breaker comprises 55 to 65 parts by weight of carbon black, 5 to 15 parts by weight of silica, 3.5 to 4.5 parts by weight of sulfur, at least 0.08 part by weight of cobalt, a resorcinol resin and a methylene donor based on 100 parts by weight of a rubber component containing a natural rubber and/or an isoprene rubber as a main component.

Abstract: There is provided a rubber composition for tire tread, which can provide a tire having low decrease in abrasion resistance and balanced performance of traction property, braking property and cornering property. The rubber composition for tire tread is obtained by mixing 100 parts by weight of at least one rubber component selected from the group consisting of a natural rubber, an isoprene rubber and a butadiene rubber, 5 to 45 parts by weight of a silica, 0.5 to 4.0 parts by weight of a silane coupling agent and 3 to 8 parts by weight of a powdered article containing cellulose material.

Abstract: A rubber composition for tire and a pneumatic tire in which the rubber composition is used improve steering performance on snowy and icy roads as well as traction performance in the forward and backward directions while reducing the recycling and manufacturing cost. The rubber composition for tire contains from 0.5 to 12 parts by weight of paper relative to 100 parts by weight of a rubber component, and preferably further contains from 5 to 100 parts by weight of silica and from 2 to 15 parts by weight of short fiber relative to 100 parts by weight of the rubber component. The paper is newspaper waste. From 10 to 100 parts by weight of carbon black may further be contained relative to 100 parts by weight of the rubber component.

Abstract: In a bulb-form lamp, a threaded portion 31 of a lamp cap 5, that is, a shell 30 is made of a conductive resin. The conductive resin shell 30 and an eyelet 50 constituting the lamp cap 5 are composite parts, which are molded integrally with a lamp case 20. A part of the conductive resin shell 30 is provided with a terminal connective portion 30a projecting into the lamp case 20. The terminal connective portion 30a is connected with an electrode terminal 40 led out of a printed circuit board 13 of a lighting circuit 14 so that the conductive resin shell 30 and the lighting circuit 14 are electrically connected. By doing so, it is possible to simplify the assembly of bulb-form lamp, and to reduce an assembly cost, and further, to manufacture a bulb-form lamp having a high quality and a lamp case for the bulb-form lamp.

Abstract: A rubber composition which is superior in ozone resistance and is hard to be discolored brown and white which comprises 0.5 to 2.5 parts by weight of a wax containing a component with 45 or more carbon atoms and having an average number of carbon atoms of 28 to 38 and 3.0 to 7.0 parts by weight of antioxidant containing 30 to 100% by weight of N-(1-methylheptyl)-N′-phenyl-p-phenylenediamine per 100 parts by weight of a diene rubber component.