Abstract: A method for producing a multilayer coil component includes forming, on a main face of a substrate, a first coil conductor extending along the main face having conductivity, forming a second coil conductor and a third coil conductor apart from each other in a direction in which the first coil conductor extends and each extending from the first coil conductor in a first direction orthogonal to the main face, and forming a fourth coil conductor electrically connected to an end of the second coil conductor opposite to the first coil conductor and extending along the main face. The forming the first coil conductor includes forming, on the main face, a first insulator layer provided with a first penetration portion having a shape corresponding to the first coil conductor and exposing a part of the main face, and forming, by plating, the first coil conductor in the first penetration portion.

Abstract: The present invention provides an optical member including an organic polymer. This optical member includes a surface A which has an area of 1 mm2 or more, and in which the flatness of a region having an area of 1 mm2, as measured by a non-contact type optical flatness meter, is 80 ?m or less.

Abstract: A decorative sheet has a structure of: a laminate sheet having a base film and a decorative layer formed on the base film; and a surface resin layer having a transparent resin layer and a printed layer formed in an image pattern on the transparent resin layer, being laminated on the laminate sheet at the decorative layer side. The surface resin layer is laminated so as the printed layer to come to the laminate sheet side, the surface of the laminate sheet at the decorative layer side forms an indented profile having concavities on the decorative layer recessed to the base film side, and the printed layer enters the concavities. The printed layer is a layer formed by printing a printing liquid containing a photocuring component containing polyurethane and polyester, a thermoplastic resin, and a solvent, in an image pattern on the transparent resin layer, and by removing the solvent from the printed printing liquid, and then by curing the photocuring component under light irradiation.

Abstract: A manufacture method of a tag includes a steps of forming through holes at a predetermined part of an insulated sheet, capable of fixing a conductive ink; and printing an antenna circuit at an upper surface and undersurface of the insulated sheet using the conductive ink so as to close the through hole so that it can reduce the working step since it is unnecessary to perform the formation work of the resist layer for fixing the electric conduction ink; it can form the antenna circuit printed on both surfaces thereof using the conductive ink when the through holes are processed so as to conduct so that it can reduce the working step; and it can reduce the number of the inferior goods remarkably and can be manufactured cheaply.

Abstract: A composition for polysulfide-based resin comprising a polythiol having 4 or more functional groups and a compound having a reactive unsaturated bond(s) and/or b epoxy group(s) and/or c iso(thio)cyanato group(s) in one molecule (however, a+b+c.gtoreq.2, and a and b are not simultaneously 0). A polysulfide-based resin obtained by curing the composition, an optical material comprising the resin, a lens consisting of the optical material and a method for producing the polysulfide-based resin are also set forth.

Abstract: The present invention discloses a sulfur-containing urethane-based resin composition of the present invention is directed to a sulfur-containing urethane-based resin composition which comprises a polythiol compound represented by formula (1): ##STR1## wherein X.sub.1, X.sub.2 and X.sub.3 each is a hydrogen atom or a mercapto group; x, y and z each is an integer of 0 to 8; and in their combinations, formula (1) has at least two mercapto groups,a polyiso(thio)cyanate compound, and a compound having two or more reactive unsaturated groups in an amount of 30 to 70% by weight based on the total weight of the composition, or a sulfur-containing urethane-based resin composition which comprises the polythiol compound represented by formula (1), the polyiso(thio)cyanate compound, the compound having two or more reactive unsaturated groups in an amount of 10 to 70% by weight based on the total weight, and a photopolymerization catalyst.

Abstract: A novel bis-urea compound, preparation process of the compound, and preparation process of 1,3-dialkyl-2-imidazolidinone are disclosed and the disclosure provides a novel preparation process of 1,3-dialkyl-2-imidazolidinone and simultaneously enables effective utilization of N,N',N"-trialkyldiethylentriamine which lacks a large amount use and is desired to develop new application.

Abstract: A novel bis-urea compound, preparation process of the compound, and preparation process of 1,3-dialkyl-2-imidazolidinone are disclosed and the disclosure provides a novel preparation process of 1,3-dialkyl-2-imidazolidinone and simultaneously enables effective utilization of N,N',N"-trialkyldiethylentriamine which lacks a large amount use and is desired to develop new application.

Abstract: The present invention relates to 1,3,6-Trialkylhexahydro-1,3,6-triazocine-2-on represented by the formula (1): ##STR1## wherein R is a C.sub.1 .about.C.sub.8 alkyl group and a preparation process of the compound comprising reacting N,N',N"-trialkyldiethylenetriamine represented by the formula (2): ##STR2## wherein R is a C.sub.1 .about.C.sub.8 alkyl group, with urea, phosgene or carbon dioxide.