A curable composition can comprise a polymerizable material and an initiator. The polymerizable material can comprise a first monomer and a second monomer, wherein the second monomer is soluble in the first monomer, and the second monomer includes a ring structure selected from a maleimide ring, a pyrone ring, or a 2-furanone rings. The curable composition can have a viscosity of not greater than 10 mPa.Math.s, a fast curing kinetic, low shrinkage during curing, and is suitable for use in inkjet adaptive planarization.

A water- and oil-repellent composition including a copolymer having a repeating unit derived from a hydrophobic monomer having an ethylenically unsaturated double bond and a hydrocarbon group having from 3 to 40 carbon atoms, and a repeating unit that is derived from a cyclic vinylidene monomer, which is a compound represented by formula (wherein X represents an aliphatic group having from 1 to 10 carbon atoms; and Z represents at least one atom or group that is selected from a hydrogen atom, a hydrocarbon group having from 1 to 6 carbon atoms, and halogen atoms). Also disclosed is method for producing the water- and oil-repellent composition; as well as a textile product to which the copolymer in the water- and oil-repellent composition is attached.

A water- and oil-repellent composition including a copolymer having a repeating unit derived from a hydrophobic monomer having an ethylenically unsaturated double bond and a hydrocarbon group having from 3 to 40 carbon atoms, and a repeating unit that is derived from a cyclic vinylidene monomer, which is a compound represented by formula (wherein X represents an aliphatic group having from 1 to 10 carbon atoms; and Z represents at least one atom or group that is selected from a hydrogen atom, a hydrocarbon group having from 1 to 6 carbon atoms, and halogen atoms). Also disclosed is method for producing the water- and oil-repellent composition; as well as a textile product to which the copolymer in the water- and oil-repellent composition is attached.

A water- and oil-repellent composition including a copolymer having a repeating unit derived from a hydrophobic monomer having an ethylenically unsaturated double bond and a hydrocarbon group having from 3 to 40 carbon atoms, and a repeating unit that is derived from a cyclic vinylidene monomer, which is a compound represented by formula (wherein X represents an aliphatic group having from 1 to 10 carbon atoms; and Z represents at least one atom or group that is selected from a hydrogen atom, a hydrocarbon group having from 1 to 6 carbon atoms, and halogen atoms). Also disclosed is method for producing the water- and oil-repellent composition; as well as a textile product to which the copolymer in the water- and oil-repellent composition is attached.

A photocurable resin composition includes a reactive monomer, a reactive oligomer, and a photopolymerization initiator. A cured product of the reactive monomer has a glass transition point of less than 20° C., and a cured product of the reactive oligomer has a glass transition point of less than 20° C. A cured product of the photocurable resin composition has a loss tangent tan δ at 25° C. of 0.2 or less. The cured product of the photocurable resin composition has an elongation at break in accordance with ASTM D638 of 150% or more.

A photocurable resin composition includes a reactive monomer, a reactive oligomer, and a photopolymerization initiator. A cured product of the reactive monomer has a glass transition point of less than 20° C., and a cured product of the reactive oligomer has a glass transition point of less than 20° C. A cured product of the photocurable resin composition has a loss tangent tan δ at 25° C. of 0.2 or less. The cured product of the photocurable resin composition has an elongation at break in accordance with ASTM D638 of 150% or more.

Clear inks are prone to heat-induced micro-gelling that can cause their storage stability to drop, and micro-gelling may also occur in clear inks with the passage of time, in which case their inkjet discharge property may drop. As a solution, a photocurable clear ink composition for inkjet printing is provided, which contains a photopolymerizable compound, a photopolymerization initiator, and an inorganic filler of 1 to 200 nm in average grain size accounting for 0.05 to 5.0 percent by mass in the composition, and whose visible light transmission factor is 30% or higher.

Clear inks are prone to heat-induced micro-gelling that can cause their storage stability to drop, and micro-gelling may also occur in clear inks with the passage of time, in which case their inkjet discharge property may drop. As a solution, a photocurable clear ink composition for inkjet printing is provided, which contains a photopolymerizable compound, a photopolymerization initiator, and an inorganic filler of 1 to 200 nm in average grain size accounting for 0.05 to 5.0 percent by mass in the composition, and whose visible light transmission factor is 30% or higher.

A resist composition including a base material component (A) whose solubility in a developing solution is changed due to an action of an acid, in which the base material component (A) contains a polymer compound (A1) having a constitutional unit (a1) represented by Formula (a1-1). In the formula, R represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, or a halogenated alkyl group having 1 to 5 carbon atoms, Vax.sub.1 represents a single bond or a divalent linking group, n.sub.a0 represents an integer of 0 to 2, and R.sub.01 represents a methyl group or an ethyl group.

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A novel copolymer suitable for an optical film which is excellent in optical characteristics and has high retardation even in a thin film state, and an optical film containing the same are provided. A copolymer excellent in optical characteristics and easy to form a composite with a different polymer, and an optical film composed of the same are also provided.