Abstract: A plastic optical fiber includes a plastic optical fiber body and a coloring member covering a peripheral surface of the plastic optical fiber body. The coloring member is made from a cured product of a curable composition containing an active-energy-ray-curable multifunctional acrylate and a coloring agent. The reaction percentage yield of the vinyl group of the active-energy-ray-curable multifunctional acrylate in the coloring member is 85% or more.

Abstract: An optical resin formed body manufacturing method includes: (i) depressurizing an inside of a container holding a molten optical resin; (ii) pressurizing the inside of the container holding the molten optical resin; and (iii) shaping the optical resin taken out of the container into a given shape. The steps (i) and (ii) are sequentially performed once each or are alternately performed two or more times each. In the step (i), a duration t1 [min] of the depressurization of the inside of the container is set such that the duration t1 and a viscosity µ1 [Pa•s] of the molten optical resin satisfy a relation µ1/t1 < 200. In the step (ii), a duration t2 [min] of the pressurization of the inside of the container is set such that the duration t2 and a viscosity µ2 [Pa•s] of the molten optical resin satisfy a relation µ2/t2 < 200.

Abstract: According to an embodiment of the present invention, there is provided a method of producing a plastic optical fiber having a small transmission loss. The method includes subjecting the plastic optical fiber to heat treatment. The plastic optical fiber includes a core portion and a cladding portion, the core portion is formed of a perfluorinated resin and having a refractive index gradient in a radial direction thereof.

Abstract: A method for producing a plastic optical fiber including a step of dispersing a pigment in a curable composition containing an active-energy-ray-curable resin and the pigment, and a step of forming a coloring member made from a cured product of the curable composition by applying the curable composition on a peripheral surface of a plastic optical fiber body. The curable composition has a viscosity of 2,000 mPa or more and 3,000 mPa or less at 25° C. In the step of dispersing the pigment, the curable composition is charged into an airtight container having a circular tubular shape with an axis A1 and the airtight container is rotated around the axis A1 intersecting with a vertical line at a circumferential velocity of 0.02 m/sec or more and 0.2 m/sec or less.

Abstract: A plastic optical fiber includes a plastic optical fiber body and a coloring member covering a peripheral surface of the plastic optical fiber body. The coloring member is made from a cured product of a curable composition containing an active-energy-ray-curable multifunctional acrylate and a coloring agent. The reaction percentage yield of the vinyl group of the active-energy-ray-curable multifunctional acrylate in the coloring member is 85% or more.

Abstract: A curable resin composition, comprising a compound represented by the following general formula (1): wherein X is a functional group comprising a reactive group, and R1 and R2 each independently represent a hydrogen atom, or an aliphatic hydrocarbon group, aryl group or heterocyclic group that may have a substituent; and at least organometallic compound selected from the group consisting of metal alkoxides and metal chelates.

Abstract: A pressure-sensitive-adhesive layer attached polarizing film comprises a polarizing film in which a transparent protective film is laid on/over at least one surface of a polarizer to interpose an adhesive layer between the surface and the transparent protective film, and a pressure-sensitive-adhesive layer laminated on a transparent protective film side of the polarizing film. The adhesive-layer-laid surface of the polarizer is subjected to an activating treatment. The adhesive layer is a cured product layer of an adhesive composition. The adhesive composition comprises an active-energy-ray-curable component, and a shrinkage inhibitor having a structural formula having an M-O bond wherein M is silicon, titanium, aluminum or zirconium, and O represents an oxygen atom.

Abstract: A curable resin composition, comprising a compound represented by the following general formula (1): wherein X is a functional group comprising a reactive group, and R1 and R2 each independently represent a hydrogen atom, or an aliphatic hydrocarbon group, aryl group or heterocyclic group that may have a substituent; and at least organometallic compound selected from the group consisting of metal alkoxides and metal chelates.

Abstract: The problem of the present invention is to provide a patch preparation containing a drug (excluding 2-(4-ethyl-1-piperazinyl)-4-(4-fluorophenyl)-5,6,7,8,9,10-hexahydrocycloocta[b]pyridine and a physiologically acceptable acid addition salt thereof), which is superior in both the skin permeability of a drug, and adhesiveness in the presence of water. A patch preparation containing a support and an adhesive layer on one surface of the support, wherein the adhesive layer contains a drug excluding 2-(4-ethyl-1-piperazinyl)-4-(4-fluorophenyl)-5,6,7,8,9,10-hexahydrocycloocta[b]pyridine and a physiologically acceptable acid addition salt thereof, an acrylic polymer, lactic acid and magnesium aluminometasilicate.

Abstract: An active energy ray-curable adhesive composition contains radically polymerizable compounds (A), (B) and (C) as curable components, and an acrylic oligomer (D) formed by polymerization of a (meth)acrylic monomer. The radically polymerizable compound (A) has an SP value of 29.0 (kJ/m3)½ to 32.0 (kJ/m3)½. The radically polymerizable compound (B) has an SP value of 18.0 (kJ/m3)½ to less than 21.0 (kJ/m3)½. The radically polymerizable compound (C) has an SP value of 21.0 (kJ/m3)½ to 23.0 (kJ/m3)½. And the composition contains 25 to 80% by weight of the radically polymerizable compound (B) based on 100% by weight of the total amount of the composition.

Abstract: An active energy ray-curable adhesive composition comprising radically polymerizable compounds (A), (B) and (C) as curable components, wherein the radically polymerizable compound (A) has an SP value of 29.0 (kJ/m3)1/2 to 32.0 (kJ/m3)1/2; the radically polymerizable compound (B) has an SP value of 18.0 (kJ/m3)1/2 to less than 21.0 (kJ/m3)1/2; the radically polymerizable compound (C) has an SP value of 21.0 (kJ/m3)1/2 to 23.0 (kJ/m3)1/2, and the composition comprises 1.0 to 30.0% by weight of the radically polymerizable compound (A), 35.0 to 98.0% by weight of the radically polymerizable compound (B), and 1.0 to 30.0% by weight of the radically polymerizable compound (C) based on 100% by weight of the total amount of the composition.

Abstract: A patch preparation containing a support and an adhesive layer formed on one surface of the support, wherein the adhesive layer contains 2-(4-ethyl-1-piperazinyl)-4-(4-fluorophenyl)-5,6,7,8,9,10-hexahydrocycloocta[b]pyridine or a physiologically acceptable acid addition salt thereof, an acrylic polymer, lactic acid, sesame oil and one or more kinds of stabilizers selected from 2-mercaptobenzimidazole, 2,6-di-tert-butyl-4-methylphenol and propyl gallate. A patch preparation containing a support and an adhesive layer containing lactic acid and magnesium aluminometasilicate and formed on at least one surface of the support, which preparation is superior in both skin permeability and adhesiveness in the presence of water.

Abstract: The problem of the present invention is to provide a patch preparation containing a drug (excluding 2-(4-ethyl-1-piperazinyl)-4-(4-fluorophenyl)-5,6,7,8,9,10-hexahydrocycloocta[b]pyridine and a physiologically acceptable acid addition salt thereof), which is superior in both the skin permeability of a drug, and adhesiveness in the presence of water. A patch preparation containing a support and an adhesive layer on one surface of the support, wherein the adhesive layer contains a drug excluding 2-(4-ethyl-1-piperazinyl)-4-(4-fluorophenyl)-5,6,7,8,9,10-hexahydrocycloocta[b]pyridine and a physiologically acceptable acid addition salt thereof, an acrylic polymer, lactic acid and magnesium aluminometasilicate.

Abstract: The problem of the present invention is to minimize the influence of lactic acid on the property of an adhesive layer, and provide a production method of a patch preparation, which is capable of affording a patch preparation superior in the property of an adhesive layer. A method of producing a patch preparation comprising (a): a step of forming an adhesive layer containing a drug (excluding 2-(4-ethyl-1-piperazinyl)-4-(4-fluorophenyl)-5,6,7,8,9,10-hexahydrocycloocta[b]pyridine and a physiologically acceptable acid addition salt thereof), an acrylic polymer and an organic liquid component compatible with the acrylic polymer, but without containing lactic acid, and (b): a step of adding lactic acid to the aforementioned adhesive layer.

Abstract: In a liquid surface detecting device including a movable unit having an arm and a float, for detecting a liquid surface in response to a positional variation of the float, a liquid-repellent coating is formed on the surface of at least one of the arm and the float. Accordingly, it is possible to improve degree of precision of detecting the liquid surface since the movable unit such as the float is restrained from being displaced in response to a temporary displacement of the liquid surface in a fuel tank which is caused when a vehicle oscillates.

Abstract: A powder composition mainly comprises powder particles having diameters less than 5 &mgr;m and further comprises electrically conductive carbon nanomaterial. The addition of the carbon nanomaterial results in lower amounts of agglomeration of the powder particles due to the ability of the carbon nanomaterial to dissipate electric charges generated by electrostatic forces during the formation of a powder composition.

Abstract: A method of and device for correcting a cutting-edge position of a tool installed in a numerically controlled machine. The device includes a CPU which operates a basic processing program, taking a cutting-edge position correction value thereinto, a judging unit for judging whether a temperature of the main spindle table is in a normal condition or an abnormal condition when exchanging the old tool for the new tool, a normal position correcting unit for detecting a movement amount of tool table necessary to bring the cutting-edge of the new tool into contact with a cutting-edge detecting sensor, an abnormal position correcting unit for detecting the movement amount of tool table necessary to bring the cutting-edge of the old tool into contact with the cutting-edge detecting sensor, and cutting ability adjusting unit for memorizing a dimensional change of the work machined as the cutting ability correction value of the tool in the abnormal condition.