摘要:
The invention relates to a polyolefin-based resin composition that is in an amount of 100 wt % in total. This composition includes (a) 60-66 wt % of a crystalline propylene-ethylene block copolymer, (b) 12-20 wt % of an ethylene-propylene copolymer rubber, and (c) 18-25 wt % of an inorganic filler. The block copolymer contains a first segment of a homopolymer of propylene and a second segment of a copolymer of propylene and ethylene, and has an isotactic pentad tacticity of at least 0.96. The ratio of the weight average molecular weight of the block copolymer to the number average molecular weight thereof is not greater than 6. The copolymer rubber contains therein 50-60 wt % of ethylene, and has a Mooney viscosity of from 45 to 55 at 125° C. The inorganic filler is one selected from the group consisting of a talc, a first combination of the talc and a glass fiber, and a second combination of the talc and a whisker. The talc has an average particle diameter of not greater than 2 &mgr;m. The glass fiber has an average fiber length of from 5 to 10 mm and an average diameter of from 15 to 20 &mgr;m. The whisker has an average fiber length of from 15 to 25 &mgr;m and an average diameter of from 0.5 to 1 &mgr;m. A molded plastic article made from the resin composition is substantially improved in scratch resistance.
摘要:
A front pillar garnish adapted to cover a front pillar disposed between a front windshield and a side door in an automotive vehicle. The front pillar garnish comprises a main body section formed of plastic and generally channel-shaped. The main body section is to be fixedly connected to the front pillar and located at the side of a passenger compartment. A plurality of generally plate-shaped energy absorbing ribs are integrally formed at the inner surface of the main body section in a manner to be generally perpendicular to the longitudinal axis of the main body section. A plurality of bosses are integrally formed extending from the inner surface of the main body section. A clip supporting member is fixedly secured to the tip end sections of the bosses and fixedly supported on the edges of the energy absorbing ribs. A clip formed of a spring material is fixedly mounted on the clip supporting member and fixable to the front pillar in order to install the front pillar garnish to the vehicle body.
摘要:
A car body structure comprises a pillar panel, and a pillar garnish molding made of synthetic resin and fitted to the pillar panel on the cabin side. The pillar garnish molding has a closed section which is enclosed by a base portion facing the pillar panel a plurality of ribs formed upright on the surface of the base portion and formed at a distance along the longitudinal direction of the pillar panel, and a cover member formed to cover the ribs. Therefore the car body structure is capable of achieving good energy absorption efficiency of head impact deceleration even if the width of the pillar panel is small.
摘要:
A magneto-optical disk device, in which data are written and read in and from a magneto-optical disk housed in a magneto-optical disk cartridge having a head window of a predetermined shape, comprises: first and second magneto-optical heads disposed so as to locate in the head window for accessing the magneto-optical disk; a center rail disposed substantially at the center of the window head along a diameter of the magneto-optical disk; a first side rail and a second side rail which are disposed parallelly with each other on both sides of the center rail; a first carriage slidably disposed between the center rail and the first side rail, and having at least a part of the first magneto-optical head mounted thereon; first driving means for driving the first carriage along the center rail; a second carriage slidably disposed between the center rail and the second side rail, and having at least a part of the second magneto-optical head mounted thereon; and second driving means for driving the second carriage along the center rail.
摘要:
A semiconductor memory device in accordance with the present invention comprises: a semiconductor substrate (1) of a first conductivity type; a charge storage region (6) and a bit line region (7) of a second conductivity type formed on a main surface of the substrate; highly doped regions (12a, 12b) of the first conductivity type formed respectively contiguous to only the bottom boundaries of the charge storage region (6) and the bit line region (7).
摘要:
A no-carbon pressure-sensitive copying paper obtained by coating a composition containing an alkali thickening type copolymer latex as a binder on a support is excellent in color forming properties, resistance to smudge and high concentration coating suitability.
摘要:
By using, in production of microcapsules, a partially esterified product of a styrene-maleic anhydride copolymer as an emulsifier, advantages are obtained that coloring of emulsion can be reduced/prevented at the time of emulsification and, when the microcapsules produced are used in a carbonless copying paper, a desensitizer component is not transferred to a lower paper and accordingly color development is not hindered.