Abstract: A molding composition comprising a (co)polymer of vinylcyclohexane is disclosed. The copolymer is characterized in having an absolute molecular weight Mw of 100,000 to 450,000 g/mol, polydispersity index of 1 to 3 and maximum melt viscosity of 1000 Pa·s, as measured at 300° C. and at a shear rate of 1000 sec−1. The composition is suitable for producing a variety of molded article most notably optical data storage media.

Abstract: A transparent conductive laminate in which a crystalline transparent conductive film substantially made of In—Sn—O on a transparent substrate composed of a thermoplastic polymer film, is provided. The crystalline part of the transparent conductive film (ITO-film) has a specific crystalline structure in which the X-ray diffraction intensity from the (222) crystal plane or the (440) crystal plane is highest, and [X440/222], the ratio of the X-ray diffraction intensity from the (440) crystal plane to that from the (222) crystal plane, is within the range of 0.2 to 2.5. The laminate has a low resistivity, and it is useful as an electrode material for a liquid crystal display, an electroluminescence device, a touch panel or the like. The transparent conductive laminate can be manufactured by combining the control of film fabricating atmosphere during sputtering and a heat treatment under specific conditions after film fabricating.

Abstract: Process for hydrogenating aromatic polymers in the presence of catalysts, wherein a metal or mixture of metals from group VIII of the Periodic Table together with a support of silicon dioxide, aluminium dioxide or a mixture thereof is used as the catalyst, and the catalyst pore volume defined by pores of diameters between 100 and 1000 Å, measured by mercury porosimetry, is generally from 100 to 15%, in relation to the total pore volume, measured by mercury porosimetry.

Abstract: The present invention relates to block copolymers which are predominantly based on vinylcyclohexane and to a process for producing them. The block copolymers can be processed to form mouldings by extrusion or injection moulding. The mouldings which result therefrom are distinguished by their high resistance to thermal deformation, good mechanical properties, high transparency in the visible and near UV range, and by their particularly low birefringence and water absorption.

Abstract: A process for the hydrogenation of aromatic polymers is disclosed. Accordingly, the solvent used comprise an ether that contains no &agr;-hydrogen atom on a carbon atom adjacent to the ether function. The process results in virtually complete hydrogenation of the aromatic units.

Abstract: A non-halogen flame retardant polyester resin composition shows high flame retardancy with a small amount of a flame retardant, provides a molded product not causing dripping at the time of combustion, is excellent in mechanical strength and resin knead-processability, and is free from bleed-out by annealing, wherein the resin composition comprises 100 parts by weight of a polyester such as polytetramethylene terephthalate, 1 to 15 parts by weight of coated red phosphorus powder and 3 to 70 parts by weight of a novolak phenol resin.

Abstract: The present invention provides an antistatic polyester film having an antistatic layer formed of an antistatic agent (A) composed mainly of a polymer having a recurring unit of a structure expressed by the following formula (I) on at least one surface of a polyester film ##STR1## wherein R.sup.1 and R.sup.2 are each H or CH.sub.3, R.sup.3 is an alkylene group having a carbon number of 2 to 10, R.sup.4 and R.sup.5 are each a saturated hydrocarbon group having a carbon number of 1 to 5, R.sup.6 is an alkylene group having a carbon number of 2 to 5, n is a number of 0 to 40, m is a number of 1 to 40, and Y.sup.- is a halogen ion, a mono- or polyhalogenated alkyl ion, nitrate ion, sulfate ion, an alkylsulfate ion, sulfonate ion or an alkylsulfonate ion.

Abstract: A biaxially oriented polyethylene-2,6-naphthalate film suitable for producing magnetic recording media wherein the film has a Young's modulus of at least 550 kg/mm.sup.2 in the longitudinal direction and a Young's modulus of at least 800 kg/mm.sup.2 in the transverse direction with the Young's modulus in the transverse direction being greater than the Young's modulus in the longitudinal direction by more than 200 kg/mm.sup.2 ; a surface roughness Ra of 1-12 nm; and low heat shrinkage. The film also contains 0.005-2% by weight inorganic or organic fine particles.

Abstract: There is provided a biaxially oriented polyester base film for a magnetic tape for use in a cassette for a digital audio tape recorder. The film has (a) a stress when the biaxially oriented polyester base film is extended in the longitudinal direction by 5% of at least 12 kg/mm.sup.2, (b) a residual extension in the longitudinal direction of 0.2% or less and a residual extension in the transverse direction of 0.3% or less, (c) a heat shrinkage in the longitudinal direction of 1.5% or less, (d) at least one surface of which has a surface roughness, Ra, of 25 nm or less, and (e) a film thickness of in the range of from 3 to 12 .mu.m. A magnetic tape for use in a cassette for a digital audio tape recorder is also provided.

Abstract: A thermosensitive stencil paper is composed of a substrate and a thermoplastic resin film formed thereon, which thermoplastic resin film has projections in the surface portion thereof, with a printing roughness (R.sub.p) of 2.2 to 5.0 .mu.m, which is a physical quantity proportional to the average depth of the depressions in the surface portion thereof pressed against a standard surface.

Abstract: The present invention lies in a process for modifying the surface of a molded article, which process comprises irradiating the surface of a molded article composed of an aromatic polymer or a polymer composition containing said aromatic polymer, with an ultraviolet laser beam having a wavelength of about 150 nm-380 nm at a fluence at least lower than the threshold to modify the surface as compared with the condition before the irradiation. The process makes it possible to modify the condition of the laser beam-irradiated surface portions of the molded article to, for example, a white color or black color, whereby the molded article can be endowed with functions and properties required in its use in various applications.

Abstract: Human monoclonal antibodies against cytomegalovirus. These antibodies can be advantageously used as a diagnostic, or preventive and remedy for cytomegalovirus infectious diseases.

Abstract: A process for the preparation of high-performance grade carbon fibers, which comprises attaching a fine powder of at least one member selected from oxides and carbides of silicon, aluminum, titanium, and boron to a precursor fiber bundle of as spun pitch fibers, subjecting the fiber bundle to an infusibilization treatment, and subjecting the fiber bundle to a carbonization treatment.

Abstract: A sustained release preparation comprising:(a) chitin, chitosan, or a mixture thereof(b) anionic polymer compounds such as those having a carboxyl group, a sulfonic acid group, or a group capable of providing the same, and(c) pharmaceutically active agents.This sustained release preparation can provide the desired sustained-release or dissolution of the pharmaceutically active agents in human organs irrespective of the acidity (i.e., pH conditions) therein.

Abstract: Synthetic polyester pulps are provided which are comprised of substantially fibrous fibrils made of a linear aromatic polyester, said fibrils (i) having branches at least in part thereof, (ii) being of an oriented crystalline structure, (iii) having cross-sectional shapes that have irregular and unusual contours, and (iv) exhibiting a freeness of from 50 to 700 cc. The fibrils preferably possess an average fiber diameter of smaller than about 10 microns and a fiber diameter variance of not larger than about 0.7.

Abstract: Polyester conjugate crimped yarns prepared by conjugate spinning(1) an A component substantially comprising polybutylene terephthalate and(2) a B component substantially comprising polyethylene terephthalateat a weight ratio of 30:70 to 70:30 in a side-by-side or eccentric sheath-core arrangement, rendered crimpable by false twisting to a degree of crimpability TC.sub.10 of 8% or more when subjected to a boiling water treatment under a load of 10 mg/de. The polyester conjugate crimped yarn can be obtained by subjecting the conjugate yarn to single-heater false twisting under the conditions which satisfy the following relations:TW.gtoreq.24380/.sqroot.De (i)185+50 [.eta.]B.gtoreq.T.gtoreq.150 (ii)whereTW is the number of false twists (T/m);De is the total denier of the yarn after false twisting;T is the temperature in 0.degree. C. of the false twister heater;[.eta.]B is the intrinsic viscosity of the B component.

Abstract: A method for regenerating a spent developer used for processing silver halide photographic materials which comprises electrolyzing the spent developer using an electrolytic cell including an ion exchange membrane and composed of a cathode compartment and an anode compartment with the anode and the cathode being separated from each other by an anion exchange membrane, while charging the spent developer into the cathode compartment and an electrolytic solution into the anode compartment.

Abstract: A process for the preparation of unopened sheet-formed and reticulated fibrous structures, which comprises:A. extruding a molten thermoplastic resin containing a foaming substance through a die with a slit clearance of 0.1 - 1.0mm;B. quenching the extrudate at a point less than 5mm away from the die surface to a temperature below the glass transition temperature of the resin; andC. simultaneously drafting the extrudate at a draft ratio between the maximum draft ratio possible under the conditions and one-third thereof, thereby fibrillating the extrudate just as it leaves the die exit.

Abstract: A novel 1,3,5,7-naphthalenetetracarboxylic acid, an alkali salt thereof, or an ester thereof, and a novel process for preparation thereof, and method of effective purification thereof.

Abstract: Aromatic polyamide fibers or fabrics are dyed in a deep and brilliant color with good light fastness by impregnating the fibers or fabrics with (a) a cationic dye, (b) an aliphatic hydroxy compound having a boiling point of at least 180.degree.C., (c) at least one swelling agent selected from o-phenylphenol, p-phenylphenol, benzophenone, .alpha.-naphthol and .beta.-naphthol and (d) at least one of alkali metal salts or ammonium salts of inorganic or organic acids, the amount of the salt being 1 to 10% by weight based on the sum total of the amounts of (a), (b), (c) and (d), and then heat-treating the fibers or fabrics with steam.