An anti-corrosive material includes an ultraviolet curable resin including a polymerizable compound and a photopolymerization initiator. The polymerizable compound includes at least one of a photopolymerizable (meth)acrylate monomer or a photopolymerizable (meth)acrylate oligomer. The photopolymerization initiator includes a combination of a first polymerization initiator and a second polymerization initiator. The first polymerization initiator is at least one of a benzyl ketal-based photopolymerization initiator or a hydroxyalkylphenone-based photopolymerization initiator, and the second polymerization initiator is at least one selected from a group consisting of an aminoalkylphenon-based photopolymerization initiator, an acylphosphine oxide-based photopolymerization initiator, and an oxime ester-based photopolymerization initiator. A mass ratio of the first polymerization initiator and the second polymerization initiator is 2:0.1 to 0.5. The anti-corrosive material has a viscosity of 18,900 mPa.Math.s or less.

An anti-corrosive material includes an ultraviolet curable resin including a polymerizable compound and a photopolymerization initiator. The polymerizable compound includes at least one of a photopolymerizable (meth)acrylate monomer or a photopolymerizable (meth)acrylate oligomer. The photopolymerization initiator includes a combination of a first polymerization initiator and a second polymerization initiator. The first polymerization initiator is at least one of a benzyl ketal-based photopolymerization initiator or a hydroxyalkylphenone-based photopolymerization initiator, and the second polymerization initiator is at least one selected from a group consisting of an aminoalkylphenon-based photopolymerization initiator, an acylphosphine oxide-based photopolymerization initiator, and an oxime ester-based photopolymerization initiator. A mass ratio of the first polymerization initiator and the second polymerization initiator is 2:0.1 to 0.5. The anti-corrosive material has a viscosity of 18,900 mPa.Math.s or less.

An anti-corrosive material includes an ultraviolet curable resin including a polymerizable compound and a photopolymerization initiator. The polymerizable compound includes at least one of a photopolymerizable (meth)acrylate monomer or a photopolymerizable (meth)acrylate oligomer, and the photopolymerization initiator includes at least one of an aminoalkylphenon-based photopolymerization initiator or an acylphosphine oxide-based photopolymerization initiator. When being irradiated with excitation light with a wavelength falling within a range from 365 nm to 415 nm, the ultraviolet curable resin emits visible light having a wavelength longer than that of the excitation light. Further, the anti-corrosive material has a viscosity of 18,900 mPa.Math.s or less.

An anti-corrosive material includes an ultraviolet curable resin including a polymerizable compound and a photopolymerization initiator. The polymerizable compound includes at least one of a photopolymerizable (meth)acrylate monomer or a photopolymerizable (meth)acrylate oligomer, and the photopolymerization initiator includes at least one of an aminoalkylphenon-based photopolymerization initiator or an acylphosphine oxide-based photopolymerization initiator. When being irradiated with excitation light with a wavelength falling within a range from 365 nm to 415 nm, the ultraviolet curable resin emits visible light having a wavelength longer than that of the excitation light. Further, the anti-corrosive material has a viscosity of 18,900 mPa.Math.s or less.

An alternative polyurethane composition is provided which comprises a reaction product of an azidated polyol and a poly(alkynyl carbamate) prepolymer reacted at a temperature of from 20° C. to 120° C., wherein the poly(alkynyl carbamate) prepolymer comprises a reaction product of a polyisocyanate and a stoichiometric equivalent of an alkynol of the formula (I),
HC≡C—R.sup.1R.sup.2—OH  (I),
and wherein R.sup.1 is an electron-withdrawing group selected from the group consisting of carbonyl, ester, amide, and urethane and R.sup.2 is a linear or branched alkyl chain having from 1 to 15 carbon atoms. The inventive alternative polyurethane composition position may be used to provide adhesives, sealants, films, elastomers, castings, foams, and composites.

The present invention provides a method for providing a printed article, comprising printing an aqueous ink composition onto a fibrous substrate and curing the ink, wherein the ink composition comprises a polyurethane dispersion having the properties of (a) ketone or aldehyde groups present at one or more polymer chain ends; (b) a number average molecular weight ≤50,000 and; (c) the content of ketone and aldehyde groups is in the range 0.02 to 4.0 mmol g-1, based on the dry polymer weight. The present invention also provides use of said ink composition for printing onto a fibrous substrate.

A coating agent includes: a film forming component including a component A consisting of a urethane (meth)acrylate having an isocyanuric ring skeleton, a component B consisting of a tri(meth)acrylate having an isocyanuric ring skeleton and having no urethane bond, a component C consisting of a polymerizable urethane which has a polycarbonate skeleton derived from a polycarbonate diol having an alicyclic structure, 3 or more polymerizable unsaturated groups per molecule, a weight average molecular weight of 10,000 to 40,000, and a content ratio of the alicyclic structure of 10 mass% to 25 mass%, and a component D consisting of colloidal silica having a (meth)acryloyl group; and a component E consisting of a photoradical polymerization initiator. The content of the component E is 0.1 to 10 parts by mass based on 100 parts by mass of the total film forming component.

A coating agent includes: a film forming component including a component A consisting of a urethane (meth)acrylate having an isocyanuric ring skeleton, a component B consisting of a tri(meth)acrylate having an isocyanuric ring skeleton and having no urethane bond, a component C consisting of a polymerizable urethane which has a polycarbonate skeleton derived from a polycarbonate diol having an alicyclic structure, 3 or more polymerizable unsaturated groups per molecule, a weight average molecular weight of 10,000 to 40,000, and a content ratio of the alicyclic structure of 10 mass% to 25 mass%, and a component D consisting of colloidal silica having a (meth)acryloyl group; and a component E consisting of a photoradical polymerization initiator. The content of the component E is 0.1 to 10 parts by mass based on 100 parts by mass of the total film forming component.

A curable composition containing a radical-polymerizable monomer and a hard solid component having a volume average particle diameter of 10 nm or greater and 1,000 nm or less is provided. The content of the hard solid component is 3% by volume or greater and 40% by volume or less. The difference (n.sub.1−n.sub.2) between the refractive index (n.sub.1) of a cured product of any other component than the hard solid component and the refractive index (n.sub.2) of the hard solid component is 0.04 or greater.

A curable composition containing a radical-polymerizable monomer and a hard solid component having a volume average particle diameter of 10 nm or greater and 1,000 nm or less is provided. The content of the hard solid component is 3% by volume or greater and 40% by volume or less. The difference (n.sub.1−n.sub.2) between the refractive index (n.sub.1) of a cured product of any other component than the hard solid component and the refractive index (n.sub.2) of the hard solid component is 0.04 or greater.