Provided herein is a cellulose nanofiber-containing composition producing method for producing a cellulose nanofiber-containing composition that can be easily combined with compounds having a reactive double-bond group, and that contains only a small amount of uncured material that acts as a plasticizer in a molded product, using a simple producing method that does not require any process involving solvent displacement or solvent removal. A high-strength molded body prepared by using the cellulose nanofiber-containing composition is also provided. In refining cellulose in a mixture containing a compound having a reactive double-bond group and a hydroxyl group of 10 KOHmg/g or less and a defibrating resin as essential components, the cellulose has a moisture content of 4 to 25 parts by mass with respect to 100 parts by mass of the amount of the cellulose converted on the assumption that the percentage moisture of the cellulose is 0%.

Provided herein is a cellulose nanofiber-containing composition producing method for producing a cellulose nanofiber-containing composition that can be easily combined with compounds having a reactive double-bond group, and that contains only a small amount of uncured material that acts as a plasticizer in a molded product, using a simple producing method that does not require any process involving solvent displacement or solvent removal. A high-strength molded body prepared by using the cellulose nanofiber-containing composition is also provided. In refining cellulose in a mixture containing a compound having a reactive double-bond group and a hydroxyl group of 10 KOHmg/g or less and a defibrating resin as essential components, the cellulose has a moisture content of 4 to 25 parts by mass with respect to 100 parts by mass of the amount of the cellulose converted on the assumption that the percentage moisture of the cellulose is 0%.

Provided are a light diffusion film having a single-layered light diffusion layer, in which the uniformity of the intensity of diffused light in the light diffusion angle region can be increased, or the light diffusion angle region can be expanded effectively, by regulating the combination of the angles of inclination of pillar-shaped objects in plural columnar structure regions, and a method for manufacturing a light diffusion film. Disclosed is a light diffusion film having a single-layered light diffusion layer, the light diffusion film having a first columnar structure region and a second columnar structure region, in which plural pillar-shaped objects having a relatively high refractive index are arranged to stand close together in a region having a relatively low refractive index, sequentially from the lower part of the film along the film plane.

Provided are a light diffusion film having a single-layered light diffusion layer, in which the uniformity of the intensity of diffused light in the light diffusion angle region can be increased, or the light diffusion angle region can be expanded effectively, by regulating the combination of the angles of inclination of pillar-shaped objects in plural columnar structure regions, and a method for manufacturing a light diffusion film. Disclosed is a light diffusion film having a single-layered light diffusion layer, the light diffusion film having a first columnar structure region and a second columnar structure region, in which plural pillar-shaped objects having a relatively high refractive index are arranged to stand close together in a region having a relatively low refractive index, sequentially from the lower part of the film along the film plane.

[Problem] An problem of the present invention is to provide to a (meth)acrylamide-based urethane oligomer which has excellent compatibility with organic solvents, general purpose acrylic monomers and oligomers, and a high curing speed to active energy rays, and to provide an active energy ray curable resin composition which contains the urethane oligomer, has excellent adhesion, moisture resistance and surface curability, and has low curing shrinkage, and a formed product thereof [Means for Solution] By using a (meth)acrylamide-based urethane oligomer of the present invention which has a carbonate skeleton, a diene-based skeleton or a hydrogenated diene-based skeleton in the molecule, one or more (meth)acrylamide groups and a component having a molecular weight of less than 1,000 (excluding a (meth)acrylamide compound (A) having a hydroxyl group) at a content of 5% by weight or less, it is possible to obtain a urethane oligomer which has excellent compatibility with organic solvents, general purpose acrylic monomers and oligomers, and a high curability and to obtain an active energy ray curable resin composition which contains the urethane oligomer and has excellent adhesion, tack resistance, moisture resistance and shrinkage resistance.

[Problem] An problem of the present invention is to provide to a (meth)acrylamide-based urethane oligomer which has excellent compatibility with organic solvents, general purpose acrylic monomers and oligomers, and a high curing speed to active energy rays, and to provide an active energy ray curable resin composition which contains the urethane oligomer, has excellent adhesion, moisture resistance and surface curability, and has low curing shrinkage, and a formed product thereof [Means for Solution] By using a (meth)acrylamide-based urethane oligomer of the present invention which has a carbonate skeleton, a diene-based skeleton or a hydrogenated diene-based skeleton in the molecule, one or more (meth)acrylamide groups and a component having a molecular weight of less than 1,000 (excluding a (meth)acrylamide compound (A) having a hydroxyl group) at a content of 5% by weight or less, it is possible to obtain a urethane oligomer which has excellent compatibility with organic solvents, general purpose acrylic monomers and oligomers, and a high curability and to obtain an active energy ray curable resin composition which contains the urethane oligomer and has excellent adhesion, tack resistance, moisture resistance and shrinkage resistance.

Provided are gel particles each having a three-dimensional crosslinked structure having at least one bond selected from a urethane bond and a urea bond, the gel particles each including: a maleimide group represented by Formula 1 below, a photosensitive composition, an ink composition, a method of producing water dispersion of gel particles, and an image forming method. In Formula 1, R.sub.1 and R.sub.2 each independently represent a hydrogen atom or an alkyl group, R.sub.1 and R.sub.2 may be bonded to each other to form a ring, and * represents a bonding site.

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The present invention provides an ultraviolet curable composition including: an urethane resin having a polymerizable unsaturated group, which is obtained by reacting a polyol and a polyisocyanate with each other, wherein the polyol contains an alkylene diol having two or more polymerizable unsaturated groups, which is represented by general formula (1), or an oxyalkylene diol having two or more polymerizable unsaturated groups, which is represented by general formula (2); an aqueous medium; and a photopolymerization initiator having an absorption peak at a wavelength in the range of from 320 to 460 nm. The ultraviolet curable composition is satisfactorily cured even when using an LED lamp as a light source, and can form a cured coating film having both elongation and surface hardness.

HOR.sup.1OH(1)

HOR.sup.1OR.sup.2OR.sup.3OH(2)

Provided are a laminated body that can improve the adhesive force between the base layer and the surface layer, a conductive roller provided with the laminated body, and a method for manufacturing a laminated body with improved adhesive force between the base layer and the surface layer. The disclosed laminated body includes a base layer and a surface layer formed on the base layer, the base layer includes polyurethane having a (meth)acryloyl group, the surface layer includes a radical curable resin obtained by polymerizing (meth)acrylate that has a (meth)acryloyl group, and the laminated body is formed by the (meth)acryloyl group in the polyurethane reacting with the (meth)acryloyl group in the (meth)acrylate.

The object of the present invention is to provide a hard coating composition for a metal substrate, including a film-forming resin component which contains a urethane (meth)acrylate obtained by reacting a polyisocyanate compound, a polyol, and a (meth)acrylate monomer having a hydroxyl group, wherein the polyisocyanate compound is hydrogenated xylylene diisocyanate and/or dicyclohexylmethane diisocyanate.