A multi-component composition contains a) a polyol component having a1) acrylate polyol and a2) at least one of polyester polyol and polyether polyol, wherein the equivalent ratio of hydroxyl groups of acrylate polyol to hydroxyl groups of the at least one of polyester polyol and polyether polyol is in the range of 0.4 to 3.8, and b) an isocyanate component containing b1) aliphatic polyisocyanate monomer, dimer and/or trimer, and b2) aliphatic polyisocyanate prepolymer, wherein the equivalent ratio of isocyanate groups of aliphatic polyisocyanate monomer, dimer and/or trimer to isocyanate groups of aliphatic polyisocyanate prepolymer is in the range of 0.5 to 2.6. The multi-component composition is suitable for use as a top coat on elastic membranes, in particular roofing membranes, to provide sufficient weathering resistance/protection.

Corrosion resistance coatings and dicyclopentadiene modified ester oligomers useful in corrosion resistant coatings. The corrosion resistant coatings exhibit improved corrosion resistance, improved adhesion, lower toxicity, unlimited pot life, and/or lower volatile organic compounds (VOCs).

Provided is a thermal barrier film having, dispersed in a resin matrix, high-refractive-index particles having a D-line refractive index of 2.5 or more and 3.2 or less. The high-refractive-index particles have an average particle size of 2.0 μm or more and 5.0 μm or less. Provided are a thermal barrier film that reduces a temperature rise due to sunlight by virtue of having a high reflectance even as a thin film, has high film thickness accuracy, and has high abrasion resistance, a thermal barrier paint for forming such thermal barrier film, and an optical instrument including such thermal barrier film.

Provided is a thermal barrier film having, dispersed in a resin matrix, high-refractive-index particles having a D-line refractive index of 2.5 or more and 3.2 or less. The high-refractive-index particles have an average particle size of 2.0 μm or more and 5.0 μm or less. Provided are a thermal barrier film that reduces a temperature rise due to sunlight by virtue of having a high reflectance even as a thin film, has high film thickness accuracy, and has high abrasion resistance, a thermal barrier paint for forming such thermal barrier film, and an optical instrument including such thermal barrier film.

The invention discloses a multilayer coating system, which belongs to the technical field of coatings, the said multilayer coating system comprises an isocyanate curing coating and a Real Michael addition crosslinkable coating, wherein the isocyanate curing coating comprises at least one resin X containing an acidic carbon-hydrogen bond or an unsaturated carbon-carbon double bond with an electron-withdrawing group, and the resin X performs a Michael addition reaction with the Real Michael addition crosslinkable coating, so that the interlayer adhesion of the two coatings is greatly improved. According to the said multilayer coating system, the invention further discloses a coating method, a coating structure, and a coated substrate. The invention also provides an isocyanate curing coating, which is used for a primer coat for a Real Michael addition crosslinkable coating and a use thereof for improving the adhesion of the Real Michael addition crosslinkable coating to a substrate.

The invention discloses a multilayer coating system, which belongs to the technical field of coatings, the said multilayer coating system comprises an isocyanate curing coating and a Real Michael addition crosslinkable coating, wherein the isocyanate curing coating comprises at least one resin X containing an acidic carbon-hydrogen bond or an unsaturated carbon-carbon double bond with an electron-withdrawing group, and the resin X performs a Michael addition reaction with the Real Michael addition crosslinkable coating, so that the interlayer adhesion of the two coatings is greatly improved. According to the said multilayer coating system, the invention further discloses a coating method, a coating structure, and a coated substrate. The invention also provides an isocyanate curing coating, which is used for a primer coat for a Real Michael addition crosslinkable coating and a use thereof for improving the adhesion of the Real Michael addition crosslinkable coating to a substrate.

Disclosed are a soft solvent-free flame-retardant polyurethane synthetic leather and a preparation method therefor. The soft solvent-free flame-retardant polyurethane synthetic leather comprises an antifouling layer, a surface layer, an intermediate layer, a bonding layer and a base cloth in sequence from top to bottom, wherein the bonding layer is prepared from component A and an isocyanate; the molar ratio of —NCO in the isocyanate to —OH in the component A is 0.85-0.93; and the component A is composed of a polyhydric alcohol, an inhibition-type catalyst, a flame retardant, a filler and a viscosity modifier in parts by weight.

Disclosed are a soft solvent-free flame-retardant polyurethane synthetic leather and a preparation method therefor. The soft solvent-free flame-retardant polyurethane synthetic leather comprises an antifouling layer, a surface layer, an intermediate layer, a bonding layer and a base cloth in sequence from top to bottom, wherein the bonding layer is prepared from component A and an isocyanate; the molar ratio of —NCO in the isocyanate to —OH in the component A is 0.85-0.93; and the component A is composed of a polyhydric alcohol, an inhibition-type catalyst, a flame retardant, a filler and a viscosity modifier in parts by weight.

A coating composition includes a polyisocyanate component and a polyol component. The polyisocyanate component includes an aromatic ring-containing isocyanate. The polyol component includes an acrylic polyol. The acrylic polyol is a polymer of a monomer composition containing a hydroxyl group-containing polymerizable monomer and a carboxyl group-containing polymerizable monomer and containing no (meth)acrylonitrile.

Provided is a curable composition including a urethanization reaction product of a branched polyolefin diol; at least one selected from an isocyanurate product, an adduct product, and a biuret product, of an aliphatic diisocyanate having 6 to 10 total carbon atoms; and a hydroxy saturated C.sub.1 to C.sub.4 alkyl (meth)acrylate. Also provided are a method for producing the curable composition, and a specific curable compound included in the curable composition.