The present invention provides an ionizing radiation curable paint composition which is capable of forming a cured film that has excellent elongation (for example, 30% or more) under heating and has excellent solvent resistance and chemical resistance and which can contain an alcohol as a diluent solvent. The ionizing radiation curable paint composition contains a urethane (meth)acrylate oligomer (A1) having 6 or more (meth)acryloyl groups and having a weight average molecular weight of 3,000 to 50,000, wherein the urethane (meth)acrylate oligomer (A1) is a silicone-modified oligomer having a constituent unit (a) derived from a multifunctional (meth)acrylate monomer having a hydroxy group and 3 or more (meth)acryloyl groups, a constituent unit (b) derived from an alcohol having 2 or more hydroxy groups and having a molecular weight of 100 or lower, a constituent unit (c) derived from isophorone diisocyanate, and a constituent unit (d) derived from a carbinol-modified polysiloxane.

The present invention provides an ionizing radiation curable paint composition which is capable of forming a cured film that has excellent elongation (for example, 30% or more) under heating and has excellent solvent resistance and chemical resistance and which can contain an alcohol as a diluent solvent. The ionizing radiation curable paint composition contains a urethane (meth)acrylate oligomer (A1) having 6 or more (meth)acryloyl groups and having a weight average molecular weight of 3,000 to 50,000, wherein the urethane (meth)acrylate oligomer (A1) is a silicone-modified oligomer having a constituent unit (a) derived from a multifunctional (meth)acrylate monomer having a hydroxy group and 3 or more (meth)acryloyl groups, a constituent unit (b) derived from an alcohol having 2 or more hydroxy groups and having a molecular weight of 100 or lower, a constituent unit (c) derived from isophorone diisocyanate, and a constituent unit (d) derived from a carbinol-modified polysiloxane.

A two-component polyurethane composition comprising a polyisocyanate and an emulsion polymer having greater than 2.2% of hydroxy groups in the emulsion polymer and comprising structural units of a polymerizable surfactant, a first hydroxy-functional monomer, an acid monomer and/or a salt thereof, an additional monoethylenically unsaturated nonionic monomer, and optionally a second hydroxy-functional alkyl (meth)acrylate; the two-component polyurethane composition providing improved alcohol resistance without compromising both acid and alkali resistance.

A two-component polyurethane composition comprising a polyisocyanate and an emulsion polymer having greater than 2.2% of hydroxy groups in the emulsion polymer and comprising structural units of a polymerizable surfactant, a first hydroxy-functional monomer, an acid monomer and/or a salt thereof, an additional monoethylenically unsaturated nonionic monomer, and optionally a second hydroxy-functional alkyl (meth)acrylate; the two-component polyurethane composition providing improved alcohol resistance without compromising both acid and alkali resistance.

A preparation method for a corrosion-resistant coating of a reinforcing steel for marine concrete, comprising the steps: (1) pretreating the surface of a reinforcing steel; (2) preparing self-repairing corrosion microcapsules; (3) preparing a cathodic electrophoresis coating; (4) carrying out cathodic electrophoresis; and (5) curing. The electrophoresis coating of the present invention contains the self-repairing corrosion microcapsules, metal powder, and graphene oxide powder. The corrosion resistance of the coating is improved under the co-action of the self-repairing properties of the self-repairing microcapsules and cathodic protection. The corrosion-resistant coating has excellent adhesion and corrosion resistance, prolonging the service life of reinforcing steel. It is widely used for the protection of reinforcing steels for marine concrete, and also for the protection of metal structures in general environment.

A preparation method for a corrosion-resistant coating of a reinforcing steel for marine concrete, comprising the steps: (1) pretreating the surface of a reinforcing steel; (2) preparing self-repairing corrosion microcapsules; (3) preparing a cathodic electrophoresis coating; (4) carrying out cathodic electrophoresis; and (5) curing. The electrophoresis coating of the present invention contains the self-repairing corrosion microcapsules, metal powder, and graphene oxide powder. The corrosion resistance of the coating is improved under the co-action of the self-repairing properties of the self-repairing microcapsules and cathodic protection. The corrosion-resistant coating has excellent adhesion and corrosion resistance, prolonging the service life of reinforcing steel. It is widely used for the protection of reinforcing steels for marine concrete, and also for the protection of metal structures in general environment.

An anti-corrosive material contains an ultraviolet curable resin including a polymerizable compound including at least one of a photopolymerizable (meth)acrylate monomer or a photopolymerizable (meth)acrylate oligomer. The anti-corrosive material has a viscosity of 18,900 mPa.Math.s or less. The anti-corrosive material has an elongation rate of 60% or greater as a result of heating at 120° C. for 4,000 hours after curing.

An anti-corrosive material contains an ultraviolet curable resin including a polymerizable compound including at least one of a photopolymerizable (meth)acrylate monomer or a photopolymerizable (meth)acrylate oligomer. The anti-corrosive material has a viscosity of 18,900 mPa.Math.s or less. The anti-corrosive material has an elongation rate of 60% or greater as a result of heating at 120° C. for 4,000 hours after curing.

An anti-corrosive material contains a ultraviolet curable resin including a polymerizable compound including at least one of a photopolymerizable (meth)acrylate monomer or a photopolymerizable (meth)acrylate oligomer. The polymerizable compound includes a combination of certain substances. The photopolymerizable (meth)acrylate oligomer contains a low molecular-weight (meth)acrylate oligomer. The polymerizable compound contains a certain cross linking density increasing agent. 35 to 100 parts by mass of the cross linking density increasing agent are contained for 100 parts by mass of the ultraviolet curable resin. The anti-corrosive material has a viscosity of 18,900 mPa.Math.s or less, the viscosity being measured at 25° C. according to JIS Z8803.

An anti-corrosive material contains a ultraviolet curable resin including a polymerizable compound including at least one of a photopolymerizable (meth)acrylate monomer or a photopolymerizable (meth)acrylate oligomer. The polymerizable compound includes a combination of certain substances. The photopolymerizable (meth)acrylate oligomer contains a low molecular-weight (meth)acrylate oligomer. The polymerizable compound contains a certain cross linking density increasing agent. 35 to 100 parts by mass of the cross linking density increasing agent are contained for 100 parts by mass of the ultraviolet curable resin. The anti-corrosive material has a viscosity of 18,900 mPa.Math.s or less, the viscosity being measured at 25° C. according to JIS Z8803.