A heat exchanger includes a metal base defining a heat exchange channel for flowing at least one of a refrigerant and a coolant therein, and a coating layer coated at least a part of an outer surface of the metal base. The coating layer includes sol particles and an antibacterial material, where the sol particles include silica. The antibacterial material includes a rare earth element oxide. By combining the antibacterial agent containing the rare earth element oxide with sol, the advantages of each component can be fully utilized. On the one hand, it is easier to attach the antibacterial material via the sol, and on the other hand a surface of the metal base of the heat exchanger can have a good antibacterial and mold-inhibiting effects, which is beneficial to cost reduction.

An aqueous dispersion, an aqueous coating composition comprising the aqueous dispersion, and coatings made therefrom capable of slow release of fragrance.

An aqueous dispersion, an aqueous coating composition comprising the aqueous dispersion, and coatings made therefrom capable of slow release of fragrance.

The present application discloses paint based on a graphene nano container and a self-repairing coating as well as a preparation method and application thereof. The paint comprises a first component comprising 20˜40 parts by weight of epoxy resin; a second component comprising 0.1˜2 parts by weight of corrosion inhibitor-loaded graphene nano container, 1 part by weight of diluent, 30˜60 parts by weight of epoxy curing agent, 1 part by weight of defoaming agent and 1 part by weight of flatting agent, wherein the corrosion inhibitor-loaded graphene nano container comprises graphene grafted with cyclodextrin and the corrosion inhibitor reversely binding to the cyclodextrin. The paint of the present application is simple in preparation process, green and environmental friendly in raw material, low in price and available, and meanwhile the self-repairing coating formed thereof is excellent in protection performance.

The present application discloses paint based on a graphene nano container and a self-repairing coating as well as a preparation method and application thereof. The paint comprises a first component comprising 20˜40 parts by weight of epoxy resin; a second component comprising 0.1˜2 parts by weight of corrosion inhibitor-loaded graphene nano container, 1 part by weight of diluent, 30˜60 parts by weight of epoxy curing agent, 1 part by weight of defoaming agent and 1 part by weight of flatting agent, wherein the corrosion inhibitor-loaded graphene nano container comprises graphene grafted with cyclodextrin and the corrosion inhibitor reversely binding to the cyclodextrin. The paint of the present application is simple in preparation process, green and environmental friendly in raw material, low in price and available, and meanwhile the self-repairing coating formed thereof is excellent in protection performance.

An aerosol primer composition includes a film forming component and a propellant component. The film forming component includes (by weight of the composition): (a) at least one of a polyurethane and alkyd from about 10% to about 20%, (b) cellulosic particles from about 2% to about 5%, and (c) an aqueous solvent system from about 20% to about 40%. The propellant component includes dimethyl ether. The aerosol primer composition can be stored within a spray assembly and the propellant component can be configured to pressurize the film forming component for dispensing from the spray assembly as an aerosol. The aerosol primer composition can be used to prime a substrate to be painted or stained.

An aerosol primer composition includes a film forming component and a propellant component. The film forming component includes (by weight of the composition): (a) at least one of a polyurethane and alkyd from about 10% to about 20%, (b) cellulosic particles from about 2% to about 5%, and (c) an aqueous solvent system from about 20% to about 40%. The propellant component includes dimethyl ether. The aerosol primer composition can be stored within a spray assembly and the propellant component can be configured to pressurize the film forming component for dispensing from the spray assembly as an aerosol. The aerosol primer composition can be used to prime a substrate to be painted or stained.

A two-component solvent-based coating composition comprising a component A comprising an autoxidizable resin comprising unsaturated fatty acids and a metal-ligand complex as drying catalyst, wherein the metal is manganese, vanadium or iron; and a component B comprising a (meth)acrylate compound and a thiol compound, wherein the (meth)acrylate compound is a poly (meth)acryloyl functional ester of (meth)acrylic acid and a polyhydric alcohol or a poly (meth)acryloyl functional dimer of such ester, wherein component B is free of drying catalyst, wherein component A is free of a compound comprising a thiol group and of a compound comprising a (meth)acryloyl functional group, and wherein the coating composition is free of cobalt.

A two-component solvent-based coating composition comprising a component A comprising an autoxidizable resin comprising unsaturated fatty acids and a metal-ligand complex as drying catalyst, wherein the metal is manganese, vanadium or iron; and a component B comprising a (meth)acrylate compound and a thiol compound, wherein the (meth)acrylate compound is a poly (meth)acryloyl functional ester of (meth)acrylic acid and a polyhydric alcohol or a poly (meth)acryloyl functional dimer of such ester, wherein component B is free of drying catalyst, wherein component A is free of a compound comprising a thiol group and of a compound comprising a (meth)acryloyl functional group, and wherein the coating composition is free of cobalt.

The present invention relates to a multi-aziridine compound having: a) at least 2 of the following structural units (A) whereby R.sub.1 is H; R.sub.2 and R.sub.4 are independently chosen from H, a linear group containing from 1 to 8 carbon atoms and optionally containing one or more heteroatoms, a branched or cyclic group containing from 3 to 8 carbon atoms and optionally containing one or more heteroatoms, phenyl, benzyl, or pyridinyl; R.sub.3 is chosen from a linear group containing from 1 to 8 carbon atoms and optionally containing one or more heteroatoms, a branched or cyclic group containing from 3 to 8 carbon atoms and optionally containing one or more heteroatoms, phenyl, benzyl, or pyridinyl; or R.sub.2 and R.sub.3 (in case R.sub.2 is different than H) may be part of the same cyclic group containing from 3 to 8 carbon atoms; R′ and R″ are independently H or an aliphatic hydrocarbon group containing from 1 to 12 carbon atoms; and b) a molecular weight of at least 600 Daltons, wherein the molecular weight is determined using MALDI-TOF mass spectrometry according to the description.