Abstract: There is provided a radiation-curable resin composition for formation of a primary covering layer, the radiation-curable resin composition being able to form a cured layer having excellent flexibility and adequate mechanical strength. A radiation-curable resin composition for formation of a primary covering layer of an optical fiber, comprising a urethane oligomer, a polymerization initiator and a free-radically polymerizable non-urethane monomer, the urethane oligomer being the reaction product of a polyether-based urethane prepolymer and an isocyanate reactive compound containing one active hydrogen group, the isocyanate reactive compound containing an aliphatic alcohol and an ethylenic unsaturated group-containing isocyanate reactive compound, and the aliphatic alcohol content in the isocyanate reactive compound being 24 mol % or higher.

Abstract: Provided is a composition for forming a coating layer of an optical fiber, the composition comprising a compound having a structure represented by the following formula (I): *—NH—CO—N(R1)—R2—SiR3n—(OR4)3-n??(I) wherein, R1 is a hydrogen atom, an alkyl group, or an aryl group, R2 is a methylene group optionally substituted with a halogen, a C2-10 alkylene group that may have a heteroatom or an atomic group having a heteroatom between carbon atoms and may optionally be substituted with a halogen, or a phenylene group that may have a substituent, R3 is an alkyl group, and R4 is a C1-6 alkyl group, * being a bond and n indicating an integer of 0 or more and 2 or less.

Abstract: [Problem] To provide a radiation curable resin composition which is suitable as a primary material for optical fibers, while having a high curing rate by means of irradiation of radiation [Solution] A radiation polymerizable composition for forming an optical fiber primary coating layer, said composition containing: (A) a urethane oligomer containing a structure represented by formula (I) (in formula (I), R represents a vinyl group; and * represents a bonding hand); (B) one or more compounds selected from among (i) maleic acid anhydride, (ii) a compound represented by formula (II) (in formula (II), RI represents a single bond or an alkanediyl group having from 1 to 6 carbon atoms; and R2 represents a hydrogen atom, a hydroxy group or a specific group represented by formula (II-1) or formula (II-2)), and (iii) a compound represented by formula (III) (in formula (III), R5 represents an alkanediyl group having from 1 to 6 carbon atoms); and (C) a radiation polymerization initiator.

Abstract: [Problem] To provide a radiation curable resin composition that is suitable as a primary material of an optical fiber and has a fast curing rate by irradiation with radiation. [Solution] A radiation polymerizable composition for forming a primary coating layer of an optical fiber, the radiation polymerizable composition comprising: (A) a urethane oligomer comprising a structure represented by formula (I) below: wherein R is a vinyl group and * is a bond; (B) one or more compounds of: (i) maleic anhydride, (ii) a compound represented by formula (II): wherein R1 is a single bond or an alkanediyl group comprising 1 to 6 carbon atoms, and R2 is a hydrogen atom, a hydroxy group, or a group represented by predetermined formula (II-1) or formula (II-2), or (iii) a compound represented by formula (III): wherein R5 is an alkanediyl group comprising 1 to 6 carbon atoms; and (C) a radiation polymerization initiator.

Abstract: There is provided a radiation-curable resin composition for formation of a primary covering layer, the radiation-curable resin composition being able to form a cured layer having excellent flexibility and adequate mechanical strength. A radiation-curable resin composition for formation of a primary covering layer of an optical fiber, comprising a urethane oligomer, a polymerization initiator and a free-radically polymerizable non-urethane monomer, the urethane oligomer being the reaction product of a polyether-based urethane prepolymer and an isocyanate reactive compound containing one active hydrogen group, the isocyanate reactive compound containing an aliphatic alcohol and an ethylenic unsaturated group-containing isocyanate reactive compound, and the aliphatic alcohol content in the isocyanate reactive compound being 24 mol % or higher.

Abstract: The present invention aims to provide a radiation-curing liquid resin composition for optical tridimensional modeling having good storage stability. The suitable radiation-curing liquid resin composition for optical tridimensional modeling of the present invention includes a compound represented by the below general formula (1), a compound having phenolic hydroxyl group, a cationic polymerizable compound, a radical polymerization initiator, a radical polymerizable compound, one or more sulfur compound selected from the group consisting of 2-mercaptobenzothiazole, 2-(4-morpholinodithiobenzothiazole, diisopropylxantogendisulfide and diphenyldisulfide, a polyether polyol compound.

Abstract: The present invention aims to provide a radiation-curing liquid resin composition for optical tridimensional modeling having good storage stability. The suitable radiation-curing liquid resin composition for optical tridimensional modeling of the present invention includes a compound represented by the below general formula (1), a compound having phenolic hydroxyl group, a cationic polymerizable compound, a radical polymerization initiator, a radical polymerizable compound, one or more sulfur compound selected from the group consisting of 2-mercaptobenzothiazole, 2-(4-morpholinodithiobenzothiazole, diisopropylxantogendisulfide and diphenyldisulfide, a polyether polyol compound.

Abstract: The present invention aims to provide a radiation-curing liquid resin composition for optical tridimensional modeling having good storage stability. The suitable radiation-curing liquid resin composition for optical tridimensional modeling of the present invention includes a compound represented by the below general formula (1), a compound having phenolic hydroxyl group, a cationic polymerizable compound, a radical polymerization initiator, a radical polymerizable compound, one or more sulfur compound selected from the group consisting of 2-mercaptobenzothiazole, 2-(4-morpholinodithiobenzothiazole, diisopropylxantogendisulfide and diphenyldisulfide, a polyether polyol compound.

Abstract: To provide a curable a composition exhibiting excellent applicability and capable of forming a coating having high hardness, low curling properties, and excellent flexibility on the surface of a substrate, and a cured film including a cured product of the composition. A curable composition comprising: (A) 30 to 80 wt % of metal oxide particles to which an organic compound containing a polymerizable unsaturated group is bonded, and (B) 5 to 50 wt % of a urethane (meth)acrylate having an aromatic cyclic structure in the molecule and including three or more (meth)acryloyl groups, provided that the total amount of the composition excluding an organic solvent is 100 wt %; and a cured layer formed by curing the composition, and a laminate.

Abstract: To provide a curable composition exhibiting excellent applicability and capable of forming a coating having high hardness, showing a small amount of curling after hot water immersion, and exhibiting excellent scratch resistance on the surface of a substrate, and a cured product of the composition. [Means for the Solution] A curate composition, comprising: (A) 5 to 70 wt % of metal oxide particles having a refractive index of 1.50 or more, to which an organic compound containing a polymerizable unsaturated group is bonded; and (B) 10 to 50 wt % of a compound shown by the following formula (I), the amount of each component being based on the total amount of the composition excluding a solvent, and a cured product produced by curing the curate composition.

Abstract: To provide a curable composition having excellent applicability and capable of forming a coat (film) having high hardness and high refractive index and excelling in scratch resistance and adhesion to a substrate and a low-refractive-index layer on the surface of various types of substrates, a cured product of the curable composition, and a laminate having a low reflectance and excelling in antistatic property. A curate e composition comprising particles (A) prepared by bonding oxide particles of at least one element selected from the group consisting of silicon, aluminum, zirconium, titanium, zinc, germanium, indium, tin, antimony, and cerium with an organic compound having a polymerizable unsaturated group, a compound (B) having a urethane bond and two or more polymerizable unsaturated groups in the molecule, and a photoinitiator (C).

Abstract: The present invention relates to a radiation-curable resin composition which produces a cured film having low surface resistivity and high transparency, a cured film of the composition, and a laminate including a layer of the cured film. The laminate of the present invention is suitably used as a hard coat material for preventing scratches or stains on a plastic optical part, touch panel, film-type liquid crystal element, plastic container, or flooring material, wall material, or artificial marble as an architectural interior finish; adhesive and sealing material for various substrates; vehicle for printing ink; or the like.

Abstract: A curable composition comprising: (A) reactive particles prepared by bonding oxide particles of at least one element selected from the group consisting of silicon, aluminum, zirconium, titanium, zinc, germanium, indium, tin, antimony, and cerium to an organic compound having a polymerizable unsaturated group and a hydrolyzable silyl group, (B) an organic compound having two or more polymerizable unsaturated groups, and (C) a both terminal reactive polysiloxane compound other than the component (B).

Abstract: The invention relates to a curable composition comprising (A) particles prepared by bonding at least one oxide of an element selected from the group consisting of silicon, aluminum, zirconium, titanium, zinc, germanium, indium, tin, antimony, and cerium, and an organic compound which comprises a polymerizable group, (B) a compound having a melamine group and no polymerizable unsaturated groups and (C) a compound having at least two polymerizable groups in the molecule other than the component (B); and to cured products and laminates with a with low reflectance and superior chemical resistance.

Abstract: To provide a curable composition having excellent applicability and capable of forming a coat (film) having high hardness and high refractive index, excelling in scratch resistance and adhesion to a substrate and a low-refractive-index layer, and excelling in scratch resistance even in the case where the cured product is allowed to stand in a high pH environment or the composition is cured under anaerobic conditions on the surface of various types of substrates, a cured product of the curable composition, and a laminate having low reflectance and excelling in chemical resistance. Means for the Solution.

Abstract: A composition for film formation capable of forming a coating film excellent in low dielectric constant characteristics, cracking resistance, modulus of elasticity, and adhesion to substrates and useful as an interlayer insulating film material in semiconductor devices, etc. The composition for film formation contains (A) at least one member selected from an aromatic polyarylene and an aromatic poly(arylene ether), (B) a polyvinylsiloxane, and (C) an organic solvent.

Abstract: A composition for film formation capable of forming a coating film excellent in low dielectric constant characteristics, cracking resistance, modulus of elasticity, and adhesion to substrates and useful as an interlayer insulating film material in semiconductor devices, etc. The composition for film formation contains (A) at least one member selected from an aromatic polyarylene and an aromatic poly (arylene ether), (B) a polyvinylsiloxane, and (C) an organic solvent.