Abstract: A low-heat accumulating thermoplastic resin composition containing 100 parts by mass of a thermoplastic resin [A] and 0.1 to 15 parts by mass of an inorganic pigment [B] having an infrared-reflecting property, and a molded product comprising the composition. The low-heat accumulating thermoplastic resin composition of the present invention is capable of providing a dark-colored molded product exhibiting a less heat accumulation as well as excellent weather resistance and impact resistance.

Abstract: The pressure vessel of the present invention comprises an inner shell capable of serving as a gas barrier and a pressure resistant outer shell provided to cover the inner shell, said outer shell being made of an FRP comprising reinforcing fibers and a resin and is 35 GPa or more in tensile modulus and 1.5% or more in tensile breaking strain. The present invention can provide a pressure vessel not only light in weight,.but also excellent in retaining its internal pressure against repetitive impacts and also excellent in reliability. The process for producing a pressure vessel of the present invention comprises the step of forming a pressure resistant outer shell made of an FRP comprising reinforcing fibers and a resin and is 35 GPa or more in tensile modulus and 1.5% or more in tensile breaking strain, around an inner shell capable of serving as a gas barrier, by a filament winding method or a tape winding method.

Abstract: The pressure vessel of the present invention comprises an inner shell capable of serving as a gas barrier and a pressure resistant outer shell provided to cover the inner shell, said outer shell being made of an FRP comprising reinforcing fibers and a resin and is 35 GPa or more in tensile modulus and 1.5% or more in tensile breaking strain. The present invention can provide a pressure vessel not only light in weight,.but also excellent in retaining its internal pressure against repetitive impacts and also excellent in reliability.

Abstract: Light metal/CFRP-made structural members which are characterized in that they are structural materials in which a CFRP material is stuck to the surface of a light metal material via an adhesive agent layer of thickness at least 10 &mgr;m and up to 500 &mgr;m, and the volume resistivity of the adhesive agent layer between said metal material and said CFRP material is at least 1×1013 &OHgr;.cm and, furthermore, the adhesive strength at room temperature is at least 15 MPa. In accordance with the present invention, since conventional light metal/CFRP structural materials can be made lighter and, furthermore, since the resistance to galvanic corrosion is outstanding and it is possible to markedly enhance the strength and the impact energy absorption performance, the development of applications and large-scale expansion into new fields becomes possible. Weight reduction and enhancing the durability and reliability of structures also makes a considerable contribution in terms of environmental protection.

Abstract: The present invention relates to a carbon fiber reinforced plastic member provided with high-elongation fiber bundle regions, which are uni-directionally aligned and separately disposed within the plastic member. The plastic member provides a carbon fiber reinforced plastic of lightweight, high strength and high modulus that is safe. Even if it breaks, it shows little scatter of fragments or exposure of dangerous fracture surfaces. Preferably, the high-elongation fiber at break has an elongation exceeding about 10%.

Abstract: The pressure vessel of the present invention comprises an inner shell capable of serving as a gas barrier and a pressure resistant outer shell provided to cover the inner shell, said outer shell being made of an FRP comprising reinforcing fibers and a resin and is 35 GPa or more in tensile modulus and 1.5% or more in tensile breaking strain. The present invention can provide a pressure vessel not only light in weight, but also excellent in retaining its internal pressure against repetitive impacts and also excellent in reliability. The process for producing a pressure vessel of the present invention comprises the step of forming a pressure resistant outer shell made of an FRP comprising reinforcing fibers and a resin and is 35 GPa or more in tensile modulus and 1.5% or more in tensile breaking strain, around an inner shell capable of serving as a gas barrier, by a filament winding method or a tape winding method.

Abstract: An image pickup device providing favorable images which effectively suppress the interference stripe noise originating in the interference stripes created on an image sensor surface of the image pickup device. The image pickup device includes an image sensor 3 and an overlying lid glass 2. By providing a prescribed inclination angle with respect to the relative position of the image sensor 3 and the lid glass 2 protecting it, the same number of interference stripes are provided with respect to each constitutional image-defining element within the image sensor 3, and prevention of interference stripe noise is achieved by leveling the average light intensity each constitutional image-defining element receives so that sensitizing of interference stripe noise does not occur at the specific elements.

Abstract: Disclosed herein is an interferometric surface inspection machine which is arranged to facilitate the inspection of finished spherical lens surfaces, and which essentially includes: a surface plate formed with a through light guide opening in a predetermined position; an up-down guide means suspended from the lower side of the surface plate; an interferometer liftably supported on the up-down guide means and having a reference lens with a reference surface thereof disposed on the side of the light guide opening and in face to face relation with said light guide opening; and a lens mount portion adjustably located in a predetermined position above the light guide opening in the surface plate and adapted to support peripheral edge portions of a spherical lens element on the side of the lens surface to be inspected.

Abstract: A laser interferometer for inspecting the surface condition of a specimen by irradiating the specimen on a specimen support mechanism with a laser beam projected thereto through a reference plate, and observing the interference fringe produced by interference between reflected light from a reference surface of the reference plate and a surface of the specimen under inspection, the laser interferometer includes: an interferometer housing accommodating therein an optical laser beam guide member and an optical interference fringe imaging member, and is provided with a laser beam guide portion in a wall portion thereof; a laser tube mount member of a cylindrical form projected on the outer side of the housing and positioned in such a manner so as to circumvent the laser guide portion; and a laser tube detachably fitted in the laser tube mount member.

Abstract: A process for preparing an optically active tetrahydro-2-furoic acid is disclosed. The process comprises (i) reacting (.+-.)-tetrahydro-2-furoic acid with an optically active amine resolver of the following formula (I): ##STR1## wherein R.sub.1 is a lower alkyl group and R.sub.2 represents an alkyl group or ar aryl group, provided that R.sub.1 and R.sub.2 are different from each other, thus producing an optically active diastereomer salt, and (ii) decomposing the diastereomer salt. According to the process, a high purity, optically active tetrahydro-2-furoic acid can be prepared at a high yield using an amine resolver. The amine resolver can be recovered at a high yield and high purity.

Abstract: A resinous composition for friction materials, especially for non-asbestos type friction materials is disclosed. The composition is composed of a phenolic resin modified by the reaction product of an acrylonitrile-butadiene liquid rubber with an epoxy resin, and further modification with a triazine resin. This composition when blended with non-asbestos fibers, such as fiberglass, etc., retains the flexibility desired, provides excellent friction characteristics and a reduced wear rate.