Abstract: An animal cell capable of producing an antibody specific to a human growth hormone having a molecular weight of 20,000 (20 k hGH) was prepared from an animal immunized with 20 k hGH. The animal cell was fused with a myeloma cell to produce a monoclonal antibody which specifically reacted to 20 k hGH, but substantially not to 22 k hGH. The monoclonal antibody was useful for immunoassay of 20 k hGH.

Abstract: A heat-fixable developer for electrophotography comprising a binder resin (A), a colorant (B) and a releasing agent (C), to be used favorably for electrostatic toner, which developer exhibits no offset phenomenon and causes no staining on the carrier, on the photosensitive body and on the heating roller and is superior in the releasing easiness of the heating roller upon the heat-fixing, in the anti-blocking property and in the fixing performance, wherein the releasing agent (C) comprises at least one ethylene/aromatic vinyl compound copolymer selected from the group consisting of copolymer i) and copolymer ii), the copolymer i) being an ethylene/aromatic vinyl compound copolymer obtained by co-polymerizing ethylene and an aromatic vinyl compound in the presence of a metallocene catalyst (D) and the copolymer ii) being an ethylene/aromatic vinyl compound copolymer obtained by a heat-degradation of a copolymer produced by co-polymerizing ethylene and an aromatic vinyl compound in the presence of a metallocene

Abstract: A high tensile strength copper foil having a matte side roughness Rz of 2.5 &mgr;m or less and a tensile strength of 40,000 Kgf/mm2 after heating one hour at 180° C. is produced by a process in which copper is electrodeposited from a solution containing predetermined small amounts of a polyether glycol and tin and iron ions. The chloride ion content is maintained below 0.1 wt. ppm. The copper foil is characterized by having copper crystals with atomic cells having a predominently (111) orientation.

Abstract: Disclosed herein is an olefin copolymer shrink film comprising an &agr;-olefin/aromatic vinyl compound random copolymer. This &agr;-olefin/aromatic vinyl compound random copolymer comprises 99.9 to 58 mol % of structural units derived from ethylene, 0 to 30 mol % of structural units derived from an &agr;-olefin having 3 to 20 carbon atoms (provided that the total of the structural units derived from ethylene and the structural units derived from an &agr;-olefin having 3 to 20 carbon atoms ranges from 99.9 to 88 mol %), and 0.1 to 12 mol % of structural units derived from an aromatic vinyl compound. The &agr;-olefin/aromatic vinyl compound random copolymer has an intrinsic viscosity [&eegr;], as measured in decalin at 135° C., of 0.1 to 10 dl/g and has a melting point, as measured by a differential scanning calorimeter, of 60 to 125° C. The olefin copolymer shrink film is oriented in at least one direction.

Abstract: Disclosed is a liner film for bulk container, which comprises a polyethylene (A) prepared by the use of a single site olefin polymerization catalyst such as a metallocene catalyst, said polyethylene (A) having a density of 0.920 to 0.940 g/cm3, MFR of 0.1 to 3.0 g/10 min and a melting point of 115 to 135° C. When the film is heat-sealed, its sealed portion preferably has a tensile strength at break (Ts) of 2.0 to 4.0 kg/15 mm and a tensile elongation at break (EL) of 150 to 600%. The liner film for bulk container has the advantages: the film can be made lightweight by decreasing the film thickness; the film shows such a high heat-sealing strength that the heat-sealed portion is not broken even if no adhesive tape is attached thereto; and a bulk container liner formed from the film can be filled with a content of a higher temperature than the conventional temperature. Also disclosed is a bulk container liner shaping the above film into a bag.

Abstract: A drawing system in which a thickness and degree of orientation of an oriented film or the like is maintained in a uniform manner under a condition of a high speed, shortened is a time required from a time when a molding material is charged in an extruder and drawing started until a time when a film is taken up on a take-up apparatus, and a high quality film or the like is produced at a high speed and besides, a probability for a not-oriented or oriented film or the like to be broken down during drawing is reduced. A thickness and degree of orientation of a film are independently measured in thickness gauges and a film orientation measuring apparatus in a continuous manner after longitudinal drawing or lateral drawing and measured values are input to a computer.

Abstract: A polypropylene resin composition capable of bringing about a non-stretched film superior in the transparency, in the impact resistance, in the low temperature heat-sealability and in the strength of heat-sealing, which composition comprises (A) a polypropylene resin, (B) a specific ethylene/&agr;-olefin random copolymer and (C) a specific propylene/ethylene/1-butene random copolymer.

Abstract: There are provided a resin composition for copper-clad laminates which comprises the following ingredients: (a) an epoxy resin mixture comprising an epoxy resin and a hardener therefor, (b) a maleimide compound, and (c) at least one solvent-soluble aromatic polymer having at least one functional group polymerizable with the epoxy resin or the maleimide compound, and also provided a resin-coated copper foil, a multilayered copper-clad laminate and a multilayered printed circuit board each using the resin composition.

Abstract: An adhesive ethylene copolymer resin composition blend of a modified ethylene/&agr;-olefin copolymer obtained by graft-modifying an unmodified linear ethylene/&agr;-olefin copolymer comprising ethylene and an a-olefin of 3 to 20 carbon atoms with an unsaturated carboxylic acid or its derivative, or the unmodified ethylene/&agr;-olefin copolymer and the modified ethylene/&agr;-olefin copolymer and an olefin elastomer (F) The linear ethylene/&agr;-olefin copolymer being prepared by the use of an olefin polymerization catalyst including a Group IV transition metal compound (a) containing a ligand having cyclopentadienyl skeleton and an organoaluminum oxy-compound (b). The adhesive ethylene copolymer resin composition can be used as a layer to form a laminate with a layer of a polar material or a layer of a metal. The polar material layer can be a layer of an ethylene/vinyl alcohol copolymer, a layer of a polyamide or a layer of a polyester.

Abstract: An ethylene copolymer composition comprising an ethylene/&agr;-olefin copolymer [A1] obtained by using a catalyst for olefin polymerization containing an organoaluminum oxy-compound (a) and at least two kinds of specific metallocene compounds (b), and one (co)polymer selected from the group consisting of [B1] a low-density polyethylene obtained by high-pressure radical polymerization, [B2] a crystalline polyolefin and [B3] an olefin type elastomer. An ethylene copolymer composition comprising an ethylene/&agr;-olefin copolymer [A2] having specific properties, and one (co)polymer selected from the group consisting of [B1] a low-density polyethylene obtained by high-pressure radical polymerization, [B2] a crystalline polyolefin and [B3] an olefin type elastomer.

Abstract: This invention provides a composite foil comprising an aluminum carrier layer and an ultra-thin copper foil having a protective layer disposed between them comprising a porous copper layer and an interpenetrating zinc layer. A process for producing such composite foils comprises the steps of preparing the surface of the aluminum carrier, electrodepositing a porous copper layer on the aluminum carrier layer followed by electrodepositing a zinc layer, and then electrodepositing two layers of copper to form the ultra-thin copper foil. The composite foil provides a uniform bond strength between the aluminum carrier and the protective layer which is adequate to prevent separation of the carrier and ultra-thin copper foil during handling and lamination, but which is significantly lower than the peel strength of a copper/substrate bond, so that the carrier can easily be removed after lamination of the composite foil to an insulating substrate.

Abstract: Monofluoromethyl ethylene carbonate, difluoromethyl ethylene carbonate and trifluoromethyl ethylene carbonate are provided as novel compounds. These compounds are very useful as solvents because they are chemically and physically stable, have a high dielectric constant, can readily dissolve organic substances and have a wide application temperature range. These compounds have excellent charge and discharge cycle characteristics, have a high flash point, and are safe as non-aqueous elecytrolytes. Hence, batteries using these compounds withstand voltage and have excellent charge and discharge cycle characteristics.

Abstract: The compound [tris(dimethylamino)phosphonioamino]tris[tris(dimethylamino)phosphoranylideneamino]phosphonium dichloride can be prepared by contacting hydrogen chloride with tetrakis[tris(dimethylamino)phosphoranylideneamino]phosphonium chloride. The phosphonium dichloride compound can be used in a process wherein it is brought into contact with an OH−-form ion exchange resin to prepare tetrakis[tris(dimethylamino)phosphoranylideneamino]phosphonium hydroxide. Separate processes for separating or isolating the phosphonium chloride compound or isolating the phosphonium hydroxide compound from feed solutions wherein an extraction step is used are also set forth.

Abstract: A plastic foam article 1 produced by extrusion, for example, a plastic foam sheet comprising homopolymers and copolymers of polycyclic olefins, contains at least 10% by volume of open cells 2, 4 which have a polyhedron-like shape and adjoin one another. The deformation-free opening of the cells is brought about by means of an extrusion temperature higher than that for the extrusion of thermoplastic plastic foam articles having a closed-cell structure. This leaves webs 3 of cell walls 5, 6 intact in terms of shape, whether they now have openings 7 or have no through passages, so that the mechanical strength of the cell framework or the three-dimensional matrix is retained.

Abstract: An optical device includes a light transmitting non-linear optical material having a first face and a second face. The first and second faces oppose each other. The first face has a plurality of first reflecting portions provided thereon, and the second face has a plurality of second reflecting portions provided thereon. Each of the second reflecting portions corresponds to one of the first reflecting portions. Furthermore, the first and second faces are substantially flat except for at least one convex arcuate portion being formed on at least one of the first and second faces. Additionally, at least one of the first and second reflecting portions is obtained by coating a reflective material on the convex arcuate portion.

Abstract: A process for polymerizing a vinyl chloride monomer wherein the vinyl chloride monomer is subjected to homopolymerization or (co)polymerization with a monomer copolymerizable with the vinyl chloride monomer in an aqueous solvent, comprising applying in advance a coating liquid containing a cocondensation product obtained by reacting either a phenothiazine derivative and an aldehyde or a phenothiazine derivative, a naphthol derivative and an aldehyde to give an initial condensation product and then reacting the initial product with a polyphenol, to an inner wall of a polymerization tank and parts of an apparatus in contact with the monomers during the polymerization process. The process makes it possible to apply the cocondensation product as an aqueous solution to, e.g., an inner wall of a polymerization tank; to quite effectively prevent polymer adhesion in, e.g.

Abstract: Copper fine powder has an electrical resistance in its powdery state of not more than 1×10−3&OHgr;.cm; a BET specific surface area ranging from 0.15 to 0.3 m2/g; a tap density of not less than 4.5 g/cc; a product of the tap density and the particle size, of not less than 13, the particle size being calculated from the specific surface area and a particle size distribution observed in the microtrack measurement as expressed in terms of D50 and D90 ranging from 4 to 7 &mgr;m and 9 to 11 &mgr;m, respectively; and a weight loss through hydrogen-reduction of not more than 0.30%. The copper fine powder is prepared by adding an alkali hydroxide to an aqueous copper salt solution containing divalent copper ions maintained at not less than 55° C. in an amount of not less than the chemical equivalent to form cupric oxide; then gradually adding a reducing sugar to the reaction system while maintaining the temperature of the system to not less than 55° C.

Abstract: Optical guide layers are formed on both faces of the active layer, respectively, which optical guide layers have a band gap wider than that of the active layer, an n-type cladding layer and a p-type cladding layer respectively formed so as to sandwich the active layer and the optical guide layers therebetween, which cladding layers have a band gap wider than those of the optical guide layers, and carrier blocking layers are respectively formed between the active layer and the optical guide layers, which carrier blocking layers have a band gap wider than those of the active layer and the optical guide layers. The refractive index of the p-type cladding layer is lower than that of the n-type cladding layer. With such constitution inner losses are limited to a low level, as free carrier absorption is reduced, and the electric and thermal resistances of a semiconductor laser device are reduced, with the result that the laser device is enhanced in efficiency and output power.

Abstract: The novel benzamide derivative represented by formula (1) and the novel anilide derivative represented by formula (13) of this invention has differentiation-inducing effect, and are, therefore, useful a therapeutic or improving agent for malignant tumors, autoimmune diseases, dermatologic diseases and parasitism. In particular, they are highly effective as an anticancer drug, specifically to a hematologic malignancy and a solid carcinoma.

Abstract: In a self-aligned structure semiconductor laser in which a pair of optical guide layers are respectively formed on both faces of an active layer, the optical guide layers having a bandgap which is wider than that of the active layer, a pair of cladding layers are formed so as to sandwich the active layer and the optical guide layers, the cladding layers having a bandgap which is wider than bandgap of the optical guide layers, a pair of carrier blocking layers are respectively formed between the active layer and the optical guide layers, the carrier blocking layers having a bandgap which is wider than bandgaps of the active layer and the optical guide layers, and a current blocking layer having a stripe-like window is embedded in at least one of the optical guide layers, the current blocking layer is formed by selective growth. In this way, a window of a current blocking layer can be accurately formed and the fabrication yield can be improved while avoiding maleffects on other layers.