Abstract:
Provided are a photosensitive resin composition which is soluble in an alkaline aqueous solution and which has a good propagation loss in a visible light wavelength region, a photosensitive resin cured matter, a photosensitive resin film, a photosensitive resin film cured matter and an optical waveguide obtained by using the same. Provided are, to be specific, a photosensitive resin composition comprising (A) a vinyl polymer having at least one chain-polymerizable functional group in a molecule, (B) a polymerizable compound and (C) a polymerization initiator, wherein the component (C) is at least one selected from the group consisting of 2-[2-oxo-2-phenylacetoxyethoxy]ethyl oxyphenylacetate, 2-(2-hydroxyethoxy)ethyl oxyphenylacetate and oligo{2-hyroxy-2-methyl-1-[4-(1-methylvinyl)phenyl]}propanone, a photosensitive resin cured matter, a photosensitive resin film, a photosensitive resin film cured matter and an optical waveguide obtained by using the same.
Abstract:
PROBLEM TO BE SOLVED: To provide a moisture curing type sealing composition which can uniformly fill a gap by improving following performance to the gap, and to provide a sealing composition sheet obtained by forming the moisture curing type sealing composition into a sheet shape.SOLUTION: A carboxyl group-containing polymer having a carboxyl group, a plasticizer, and a metal oxide-containing component containing a metal oxide are contained in the moisture curing type sealing composition.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing carbon fibers having excellent compressive strength and tensile modulus of elasticity without deteriorating productivity and process properties. SOLUTION: A polyacrylonitrile polymer for carbon fiber precursor fibers is obtained by copolymerizing a compound represented by formula 1 such as 3-butene nitrile, 4-pentene nitrile or 5-hexene nitrile. The method for producing the carbon fibers comprises carrying out a flameproofing treatment of acrylic precursor fibers obtained therefrom in an oxidizing atmosphere at 200-300°C temperature, then carrying out a pre-carbonizing treatment and a carbonizing treatment in an inert atmosphere. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a polymer nanosheet integrated electrolyte membrane having high gas barrier properties and low proton conductive resistance. SOLUTION: The polymer nanosheet integrated electrolyte membrane is composed of a laminated membrane obtained by developing and compressing an amphipatic polymer having an acid group on the water surface to form a monomolecular membrane, and by accumulating monomolecular membranes on a substrate. The amphipatic polymer having the acid group is preferably a copolymer of alkylacrylamide monomer, perfluoroalkyl acrylamide monomer, alkylmethacrylamide monomer or perfluoroalkyl methacrylamide monomer with the carbon number of 4 or more, and sulfonic acid content acrylic monomer. Moreover, the polymer nanosheet integrated electrolyte membrane is preferably obtained by heat-treating the laminated membrane at the glass transition temperature or more. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a positive resist composition having high resolution and preferable profiles by exposure with KrF laser light, especially having excellent transmittance for light at is a hydrogen atom, halogen atom, cyano group, 1-3C alkyl group or 1-12C fluoroalkyl group. In formula, each of R and R is independently a 1-12C fluoroalkyl group, and R is a hydrogen atom, halogen atom, cyano group, 1-3C alkyl group or 1-12C fluoralkyl group. In formula III, each of R , R , R is the same as represented in formula (II) and R is a group which is separated by an acid.