Abstract: A propylene polymer composition is prepared by mixing propylene home- or co-polymer (A) obtained using a transition metal catalyst compound (h), defined herein, with a co-catalyst, e.g., organoaluminum oxy compound, with an olefin elastomer (D) and another olefin polymer (E), e.g., polyethylene. Alternatively, the combination of propylene polymer (A), olefin elastomer (D) and olefin polymer (E) is prepared by a multi-stage polymerization method. In both cases, the propylene homo- or copolymer (A) may include a second propylene homo- or co-polymer (A′) wherein the ratio of intrinsic viscosities of propylene polymers (A) and (A′) is in the range of 3 to 30. These propylene polymer compositions are excellent in heat resistance, mechanical strength, tensile elongation at break, etc., and can be used in the fabrication of structural materials, films and sheets.

Abstract: The present invention provides polymers having any one of properties including affinity for metals or polar resins, impact resistance, mar resistance, heat resistance, rigidity, oil resistance, transparency, anti-fogging properties, electric insulating properties, high breakdown voltage, coating properties, low-temperature flexibility, moldability, environmental degradation, fluidity and dispersibility, and provides a process for preparation thereof.

Abstract: A bottle-shaped can manufacturing method for forming a shoulder portion having a slope and a diametrically small cylindrical neck portion integrally by further working a bottom side of a bottomed cylindrical can which is formed thinner at its trunk wall than at its bottom wall by drawing a metallic sheet having a thickness of 0.1 to 0.4 mm and by executing at least one thinning working of a bending/extending working and an ironing working.

Abstract: The present invention is intended to provide a polar group-containing olefin copolymer having excellent adhesion properties to metals or polar resins and excellent compatibility therewith, a process for preparing the copolymer, a thermoplastic resin composition containing the copolymer, and uses thereof. The polar group-containing olefin copolymer comprises a constituent unit derived from an &agr;-olefin of 2 to 20 carbon atoms, and a constituent unit derived from a straight-chain, branched or cyclic polar group-containing monomer having at the end a polar group such as a hydroxyl group or an epoxy group and/or a constituent unit derived from a macromonomer having at the end a polymer segment obtained by anionic polymerization, ring-opening polymerization or polycondensation. The polar group-containing olefin copolymer can be prepared by polymerizing the &agr;-olefin with the polar group-containing monomer and/or the macromonomer in the presence of a metallocene catalyst.

Abstract: Crystalline polypropylene contains components insoluble in 64° C. decane satisfying the characteristics involving intrinsic viscosity; Mz/Mn; pentadvisotacticity, D value and Mw/Mn, are excellent in hardness and rigidity, high in melt tension, and excellent in molding properties. Processes for preparing such crystalline polypropylenes, and polypropylene compositions and thermoformed products that contain such crystalline polypropylenes are also described. The number-average molecular weight Mn of the components insoluble in 64° C. decane is preferably 25000 or more.

Abstract: Present invention provides a resin composition bases on crystalline polypropylene which does not suffer from occurrence of flow mark and rashes caused from polymer gel upon molding and, thus, can produce molded articles exhibiting superior appearance and having excellent mechanical strength, such as flexural modulus and so on, together with better flowability upon the molding and which can be obtained at a lower cost by choosing starting materials of high productivity.

Abstract: A propylene polymer composition comprising a propylene polymer prepared by using a zirconocene catalyst having two aryl-substituted indenyl group and having a melt flow rate (MFR) of 0.01 to 30 g/10 min and a second propylene polymer prepared by using a zirconocene catalyst having a melt flow rate (MFR) of 30 to 1,000 g/l 0 min and, if desired, a soft polymer, a ratio of the MFR of the second propylene polymer to the MFR of the second propylene polymer being not less than 30. These propylene polymer compositions are excellent in heat resistance, mechanical strength, tensile elongation at break, etc., and hence they can be favorably used for various structural materials such as those of automobile and electrical appliances, daily necessaries, various films and sheets.

Abstract: The present invention presents crystalline polypropylenes that contain components insoluble in 64° C. decane that satisfy the following characteristics (1) to (4) and are excellent in hardness and rigidity, high in melt tension, and excellent in molding properties, process for preparing such crystalline polypropylenes, and polypropylene compositions and thermoformed products that contain such crystalline polypropylenes.

Abstract: A polypropylene resin composition for use in automotive inner and outer trims, comprising 50 to 85% by weight of a crystalline polypropylene (A) having an MFR (230° C.) of 7 to 70 g/10 min, 2 to 16% by weight of a hydrogenated block copolymer (B) obtained by hydrogenating at a hydrogenation ratio of at least 90% an aromatic vinyl/conjugated diene block copolymer which contains an aromatic vinyl block polymer unit in an amount of 22% by weight or less and has an MFR (230° C.) of at least 5 g/10 min, and 5 to 25% by weight of an inorganic filler (G) having an average particle size of 0.1 to 3 &mgr;m as essential components. This composition may contain, as optional components, another hydrogenated block copolymer (C), an aromatic hydrocarbon copolymer (D), a crystalline polyethylene (E) and a soft ethylene/&agr;-olefin copolymer (F). This composition is excellent in heat resistance, rigidity and impact resistance and can provide a molding having beautiful appearance.

Abstract: A color separating/light guiding optics comprises two independent dichroic mirrors, reflection mirrors and correcting lenses. A horizontal plane region occupied by these optical components is entirely involved in a horizontal plane region occupied by a light modulating/color compositing/image projecting optics. A red beam is guided along a detoured optical path extending across a dead space below a projection lens. Although the optical path length of the red beam becomes longer than those of the blue beam and the green beam, the detoured optical path provides a sufficient space for installing the correcting lenses. The substantial optical path lengths of three primary color beams can be equalized with each other by the provision of these correcting lenses.

Abstract: A propylene polymer composition is prepared by mixing a first propylene polymer prepared using an olefin polymerization catalyst containing a specific metallocene catalyst component of formula (I), e.g., rac-dimethylsilylene-bis{1-(2-ethyl-4-phenylindenyl)} zirconium dichloride, and an organoaluminum-oxy cocatalyst, with a second propylene polymer component. The compositions are excellent in heat resistance, mechanical strength, tensile elongation at break, and other properties and can be used to produce various structural materials, sheets and films.

Abstract: The present invention is to provide a propylene polymer composition capable of producing heat molded products having excellent balance between rigidity and impact resistance and to provide heat molded products produced from the composition, such as films and pipes. The propylene polymer composition comprises 10 to 90% by weight of a propylene polymer (A) and 90 to 10% by weight of a propylene polymer (B). The propylene polymer (A) has MFR.sub.A (measured at 230.degree. C. under a load of 2.16 kg) of 0.001 to 8 g/10 min, Tm (measured by a differential scanning calorimeter) of 95 to 145.degree. C. and a density (d.sub.A) of 885 to 905 kg/M.sup.3, and in this polymer, the content of constituent units derived from an .alpha.-olefin of 4 to 20 carbon atoms is in the range of 1.5 to 11% by mol. The propylene polymer (B) has MFR.sub.B (measured at 230.degree. C. under a load of 2.16 kg) of 0.1 to 600 g/10 min, Tm (measured by a differential scanning calorimeter) of 145 to 170.degree. C., a density (d.sub.

Abstract: A relay optical system is disclosed that comprises, in axial order from the object side, first, second, third, and fourth lens groups having a negative, a positive, a positive, and a negative refractive power, respectively. An aperture stop is between the second and third lens groups. Relative to the aperture stop, the first lens group is symmetrical with the fourth lens group and the second lens group is substantially symmetrical with the third lens group. The relay optical system fulfills at least the conditions:-0.3<f/f1<-0.10.5<f/f2<1.1wherein f1 and f2 are the focal lengths of the first and second lens groups, respectively, and f is the overall focal length of the relay optical system.

Abstract: The present invention provides a video projector equipped with a projection lens system having only one optical axis for projecting a plurality color images displayed on a plurality of CRTs. The color images displayed on the CRTs 2R, 2B and 2G are respectively focused onto a writing side of respective spatial light modulators 4R, 4G and 4B through a plurality of writing lens 3R, 3G and 3B. On the other hand, a light from a reading light source 5 is divided into 3-color lights of R, G and B by a cross-type 3-color separation member 25. The three color lights are respectively inputted into a reading side of the respective spatial light modulators through a plurality of polarization beam splitter blocks 26R, 26G and 26B each having a pair of dielectric multiple layers 26a, 26b disposed parallel to each other.

Abstract: The polypropylene composition of the present invention comprises polypropylene and a rubber component, and has the following characteristics that(i) the melt flow rate (MFR: 230.degree. C., 2.16 kg load), as measured in accordance with ASTM D1238, is not less than 8 g/10 min,(ii) the flexural modulus (FM), as measured in accordance with ASTM D790, is not less than 20,000 kg/cm.sup.2,(iii) the Izod impact strength (IZ), as measured in accordance with ASTM D256, is not less than 20 kg.cm/cm,(iv) the heat deflection temperature (HDT), as measured in accordance with ASTM D648, is not lower than 135.degree. C.

Abstract: A polyolefin resin composition comprising (A) a polyolefin resin, (B) a graft-modified .alpha.-olefin copolymer grafted with an unsaturated carboxylic acid and its derivative, and (C) an amino group-containing compound, (D) said polyolefin resin composition containing a crosslinked structure between the amino group-containing compound (C) and the graft-modified .alpha.-olefin copolymer (B), and containing, based on 100 parts by weight of the polyolefin resin (A) and the graft-modified .alpha.-olefin copolymer (B) in total, 1 to 99 parts by weight of each of the polyolefin resin (A) and the graft-modified .alpha.-olefin copolymer (B) and 0.01 to 10 parts by weight of the amino group-containing compound (C). The polyolefin resin composition gives a crosslinked molded article having impact resistance at ordinary temperature and a low temperature.

Abstract: Polyolefin resin compositions having a sea and island structure wherein cycloolefin resin, graft modified cycloolefin resin and graft modified elastomer components are finely dispersed in polyamide by melt kneading the cycloolefin resin, graft modified cycloolefin resin, graft modified elastomer and polyamide. Molded products formed by using the polyolefin resin compositions of the present invention are high in impact strength and surface characteristics, particularly less in surface delamination, and also excellent in surface glossiness. The molded products are low in water absorption properties and also excellent in oil resistance.

Abstract: The present invention discloses a polyolefin resin composition comprising a specific cycloolefin-based polymer (a), a graft-modified elastomer (b) and a compound (c) having one amino group in the molecule, and containing, based on the total amount of the components (a), (b) and (c), 50 to 95% by weight of the component (a), 1 to 50% by weight of the component (b) and 0.01 to 45% by weight of the component (c). This polyolefin resin composition is improved particularly in mechanical properties such as impact strength, etc., while retaining excellent properties of the cycloolefin-based polymer (a).

Abstract: A polymer composition comprising (A) 100 parts by weight of a cyclo-olefinic random copolymer comprising an ethylene component and a cyclo-olefin component and having an intrinsic viscosity [.eta.] of 0.05 to 10 dl/g, a glass transition temperature (Tg) of 50.degree. to 230.degree. C., and a softening point of at least 70.degree. C., (B) 5 to 150 parts by weight of at least one flexible polymer having a glass transition temperature of not more than 0.degree. C. and (C) 0.004 to 1.0 part by weight of an organic peroxide and its reaction product.

Abstract: In accordance with the present invention, there are provided cycloolefin type random copolymer compositions excellent in heat resistance, chemical resistance, rigidity, impact resistance, etc., which comprise(A) a cycloolefin type random copolymer containing an ethylene component and a cycloolefin component and having an intrinsic viscosity [.eta.] of 0.05-10 dl/g as measured at 135.degree. C. in decalin and a softening temperature (TMA) of not lower than 70.degree. C., and(B) one or more non-rigid copolymers selected from the group consisting of:(i) a cycloolefin type random copolymer containing an ethylene component, at least one other .alpha.-olefin component and a cycloolefin component and having an intrinsic viscosity [.eta.] of 0.01-10 dl/g as measured at 135.degree. C. in decalin and a softening temperature (TMA) of below 70.degree. C.,(ii) a non-crystalline to low crystalline .alpha.-olefin type elastomeric copolymer formed from at least two .alpha.-olefins,(iii) an .alpha.