Abstract: A polymerizable inkjet ink, containing: photopolymerizable monomers containing a compound (A) that is negative for skin sensitization, a compound (B) that is negative for skin sensitization, and a photoradical polymerization initiator where the compound (A) is a (meth)acrylate compound, the photoradical polymerization initiator is 2,4-diethyl thioxanthone, and the ink has a viscosity of 2 to 150 mPa·s at a temperature of 25° C. and a viscosity of 2 to 20 mPa·s at 60° C.

Abstract: To provide a photopolymerizable inkjet ink, which contains photopolymerizable monomers containing at least one selected from the following compound group (A) compounds of which are negative for skin sensitization, and at least one selected from the following compound group (B) compounds of which are negative for skin sensitization, wherein the compound group (A) is a compound group consisting of caprolactone-modified dipentaerythritol hexaacrylate, polyethoxylated tetramethylol methane tetraacrylate, ethylene oxide-modified bisphenol A diacrylate, caprolactone-modified hydroxy pivalic acid neopentyl glycol diacrylate, polypropylene glycol diacrylate [CH2?CH—CO—(OC3H6)n-OCOCH?CH2 (n?12)], hydroxyethyl acryl amide, trimethylol propane trimethacrylate, and tricyclodecane dimethanol dimethacrylate, and the compound group (B) is a compound group consisting of ethylene oxide-modified phenolacrylate, isostearyl acrylate, ethylene oxide-modified trimethylol propane trimethacrylate, stearyl methacrylate, and glycerin

Abstract: A photopolymerizable composition, which includes a photoradical polymerization initiator and photopolymerizable monomers containing glycerol dimethacrylate, where an amount of the glycerol dimethacrylate in the photopolymerizable monomers is 25% by mass or greater, and pencil hardness of a cured product is F or harder, where the cured product is formed by curing a coating film through irradiation with light of a wavelength region corresponding to a UVA region, with a light to dose of 800 mJ/cm2, where the coating film is formed by coating the photopolymerizable composition on a base so as to have an average thickness of 30 ?m.

Abstract: To provide a non-aqueous photopolymerizable composition, which contains: a polymerizable monomer; a polymerization initiator; and a polyether-modified polysiloxane compound represented by the following general formula (1): <General Formula (1)> (CH3)3Si—O—[Si(CH3)2—O]a—[Si(CH3)(X)—O]b—Si(CH3)3 where X represents R(C2H4O)c(C3H6O)d—R?, R is a single bond or an alkylene group, R? is a hydrogen atom or an alkyl group, and a to d each denote an average polymerization degree including a case where either c or d is 0.

Abstract: To provide a non-aqueous photopolymerizable composition, which contains: a (meth)acrylic acid ester compound containing at least diethylene glycol dimethacrylate; a photoradical polymerization initiator, which is at least one selected from the group consisting of 1- hydroxy- cyclohexyl- phenyl- ketone, 2- hydroxy- 2- methyl- 1- phenyl- propan- 1- one, and 2- hydroxy- 1- {4- [4- (2- hydroxy- 2- methyl- propionyl)benzyl]phenyl}- 2- methyl- 1- propan- 1- one; and a triazine compound, wherein an amount of the photoradical polymerization initiator is 10 parts by mass or greater relative to 100 parts by mass of the (meth)acrylic acid ester compound.

Abstract: A photopolymerizable composition contains diethylene glycol dimethacrylate, b1, b2, and b3, wherein the content of b2 is less than 2.5% by weight, the content of b3 is less than 3% by weight. b1 is 1-[4-(2-hydroxyethoxy)-phenyl]-2-hydroxy-2-methyl-1-propane-1-on, b2 is 2-hydroxy-1-{4-[4-(2-hydroxy-2-methyl-propionyl)benzyl]phenyl}-2-methyl-1-propane-1-on, and b3 is oligo{2-hydroxy-2-methyl-1-[4-(1-methylvinyl)phenyl]propanone}.

Abstract: A photopolymerizable composition includes glyceryl monomethacrylate in an amount of from 25 to 100 parts by weight per 100 parts by weight of monomers.

Abstract: A photopolymerizable composition, which contains: a monofunctional monomer having a viscosity of 5 mPa·s or less at 25° C.; one or more polyfunctional monomers including glycerol dimethacrylate; and a polymer free from a hydrophilic functional group, wherein a mass ratio (A/B) of an amount (A) of the polymer free from a hydrophilic functional group to an amount (B) of the polyfunctional monomer is greater than 0.80 but 3 or less.

Abstract: A non-aqueous photopolymerizable inkjet ink, including as a photopolymerizable monomer: (a) ethylene glycol dimethacrylate; and (b) caprolactone-modified dipentaerythritol hexaacrylate or ethylene oxide-modified trimethylolpropane tri-methacrylate, or both thereof, wherein the ink includes the (a) component by 10% by mass to 95% by mass with respect to the entire photopolymerizable monomer, and the ink includes the (b) component by 5% by mass to 90% by mass with respect to the entire photopolymerizable monomer, and wherein the ink does not include a diluting solvent.

Abstract: An active energy ray curable composition is provided. The active energy ray curable composition includes a polymerizable monomer, a polymer component, a polymeric dispersant, and a pigment. The active energy ray curable composition is non-aqueous. The active energy ray curable composition has a yield value of 0.1 Pa or less either when having an initial weight or when being dried to have a weight 70% by mass of the initial weight.

Abstract: A radical polymerizable composition includes a siloxane compound represented by a formula (HO)2(R)Si.O[—Si(R)(OH).O-]n-Si(R)(OH)2 in which R represents a methacryloyl group; and n represents 0 or 1; and a monomer having a viscosity lower than that of the siloxane compound. The composition is preferably cured with UV light from an LED.

Abstract: An active-energy-ray-curable composition including at least one monofunctional (meth)acrylate, at least one multifunctional (meth)acrylate, and at least one polyester-structure-containing polymer. Preferable is an aspect where the active-energy-ray-curable composition further includes a polymer obtained through polymerization of at least one selected from the group consisting of styrene, styrene derivatives, acrylic acid esters, and acrylic acid.

Abstract: To provide an active-energy-ray-curable composition including at least one monofunctional (meth)acrylate, at least one multifunctional (meth)acrylate, and at least one chlorinated-olefin-structure-containing polymer.

Abstract: A cured composition prepared from a photopolymerizable composition that includes diethyleneglycoldimethacrylate and alkoxy-modified (meth)acrylic acid ester having an n not less than 9. The n is an average polymerization degree of an alkoxy part of the (meth)acrylic acid ester.

Abstract: Provided is an active energy ray-curable inkjet ink containing at least photopolymerizable compounds. The photopolymerizable compounds include: at least one monofunctional monomer selected from the group consisting of a monofunctional monomer of which homopolymer has a glass transition temperature of 90° C. or higher, a monofunctional monomer having a ring structure, and a monofunctional monomer of which homopolymer has a glass transition temperature of 90° C. or higher and that has a ring structure; and urethane (meth)acrylate.

Abstract: A photopolymerizable inkjet ink including: a photopolymerizable monomer having a Stimulation Index (SI value) of less than 3, where the Stimulation Index indicates the extent of sensitization as measured by a skin sensitization test based on Local Lymph Node Assay; and a phenol aromatic compound having two hydroxyl groups in the molecule thereof.

Abstract: A radical polymerizable composition includes a siloxane compound represented by a formula (HO)2(R)Si.O[—Si(R)(OH).O-]n-Si(R)(OH)2 in which R represents a methacryloyl group; and n represents 0 or 1; and a monomer having a viscosity lower than that of the siloxane compound.

Abstract: A photopolymerizable composition, which includes a photoradical polymerization initiator and photopolymerizable monomers containing glycerol dimethacrylate, where an amount of the glycerol dimethacrylate in the photopolymerizable monomers is 25% by mass or greater, and pencil hardness of a cured product is F or harder, where the cured product is formed by curing a coating film through irradiation with light of a wavelength region corresponding to a UVA region, with a light to dose of 800 mJ/cm2, where the coating film is formed by coating the photopolymerizable composition on a base so as to have an average thickness of 30 ?m.

Abstract: Provided is a layered product, including: a base material, and a first layer and a second layer over the base material in this order, wherein the first layer is made of a first photopolymerizable composition containing at least a polymerizable compound having a hydroxyl group, wherein the second layer is made of a second photopolymerizable composition containing at least diethylene glycol dimethacrylate, and wherein an average thickness of the first layer is equal to or greater than 35% of a total average thickness of the first layer and the second layer.

Abstract: A photopolymerizable composition includes diethyleneglycoldimethacrylate and alkoxy-modified (meth)acrylic acid ester having an n not less than 9. The n is an average polymerization degree of an alkoxy part of the (meth)acrylic acid ester.