Provided is a water blocking material prepared by reacting and foaming a starting material composition that contains a polyol, a polyisocyanate, a catalyst, a foaming agent, a foam stabilizer and a crosslinking agent, in which the polyol contains a dimer acid polyol, the content of the dimer acid polyol in the starting material composition is 85% by mass or more of the entire polyol, the polyisocyanate contains a diphenylmethane diisocyanate, the content of the diphenylmethane diisocyanate in the starting material composition is 70 to 85% by mass of the entire polyisocyanate, and the foam stabilizer contains a reactive silicone. The water blocking material is excellent in heat resistance and water blocking performance and is further excellent in flexibility.

Disclosed is a UV-curing coating composition comprising (a) 40-70% by weight of at least one urethane (meth)acrylate being a product of a reaction between at least one polycaprolactone polyol (a1) and at least one adduct (a2), said adduct (a2) being a product of a reaction between at least one polyisocyanate (a3) and at least one hydroxyalkyl (meth)acrylate (a4), said polycaprolactone polyol (a1) being a product of a reaction between at least one polyalkoxylated polyol (a5) and at least one caprolactone monomer (a6), (b) 20-50% by weight of at least one reactive diluent having at least one olefinic carbon-carbon double bond, and (c) 0.5-10% by weight of at least one photoinitiator, and optionally (d) 1-15% by weight of at least one matting agent.

The present invention relates to a polyisocyanate composition comprising, on the basis of the total mass of the polyisocyanate composition, 97 weight % or more of a polyisocyanate, and 2.0 mass ppm or more and 1.0×10.sup.4 mass ppm or less of a compound having at least one unsaturated bond in which the compound is a different compound from the polyisocyanate, or 5.0 mass ppm or more and 2.0×10.sup.4 mass ppm or less of at least one inactive compound selected from the group consisting of a hydrocarbon compound, an ether compound, a sulfide compound, a halogenated hydrocarbon compound, a Si-containing hydrocarbon compound, a Si-containing ether compound, and a Si-containing sulfide compound.

The present invention enables the achievement of: an SMC which has excellent flexibility, while being suppressed in tackiness; and a fiber-reinforced composite material which uses this SMC, thereby being reduced in voids after molding. In order to achieve the above, a sheet molding compound according to the present invention has the configuration described below. Specifically, a sheet molding compound according to the present invention is formed from reinforcing fibers and a resin composition, and has a weight content of the fibers of from 40% to 60% (inclusive) and an air bubble content of from 5% by volume to 30% by volume (inclusive), while satisfying the formulae below in a dynamic viscoelasticity measurement at 25° C. 10.sup.5 Pa G′ (s)≤10.sup.9 Pa 1≤G′(s)/G″ (s)≤5 G′(s): storage elastic modulus (Pa) of sheet molding compound at 25° C. G″(s): loss elastic modulus (Pa) of sheet molding compound at 25° C.

The present invention provides: a heat- and light-curable coating composition which is suitable as a top clear coat for plastic molded articles for automobiles or household electric appliances or for plastic molded articles having a water pressure transfer print layer; a coating film formation method using the coating composition; and a water pressure transfer method using the coating composition. The heat- and light-curable coating composition comprises: an acrylic polyol resin (a) having a glass transition temperature (Tg) of 50° C. to 100° C., a mass average molecular weight of 1,000 to 20,000, and a hydroxyl value of 20 to 200 mgKOH/g; a multifunctional photocurable compound (b); a polymerization initiator (c); and a polyisocyanate compound (d), wherein a ratio of the acrylic polyol resin to the multifunctional photocurable compound is 5/95 to 90/10, and an equivalence ratio of hydroxyl groups contained in the acrylic polyol resin to isocyanate groups contained in the polyisocyanate compound, (OH/NCO), is 0.5 to 1.5.

A photocurable composition is provided. The photocurable composition includes: a urethane acrylamide oligomer derived from a first urethane prepolymer having an isocyanate end group and a polar group-containing acrylamide; a urethane acrylate oligomer derived from a second urethane prepolymer having an isocyanate end group and a polar group-containing (meth)acrylate; and an amide group-containing acrylic polymer derived from acrylamide and a polar group-containing (meth)acrylate.

The present disclosure provides a two-component solvent-based adhesive composition. The two-component solvent-based adhesive composition contains the reaction product of (A) an isocyanate component; (B) a polyol component containing (i) a polyester-polycarbonate polyol and (ii) a phosphate-terminated polyol; and (iii) a solvent. The present disclosure also provides a method of forming a two-component solvent-based adhesive composition.

The invention provides a method of production of biogenic lignin-based polyurethane having soft-segments from the co-polymerization of an organosolv lignin or other low molecular weight lignin and a monomeric polyol. The invention also provides polyurethanes having unique and beneficial properties.

What is described are isocyanate compositions comprising β-dicarbonyl compounds and a binder system, especially for use in a process from the group consisting of polyurethane cold-box process and polyurethane no-bake process, with this isocyanate composition as polyisocyanate component.

To provide a catalyst composition to obtain a flexible polyurethane foam from which substantially no amine compound is discharged and which has sufficient resistance to compressive strain, and a method for producing a flexible polyurethane foam using the catalyst composition. A polyurethane foam is produced by using a catalyst composition for producing a polyurethane foam, which comprises an amine compound represented by the following formula (1) and at least one glycol selected from the group consisting of ethylene glycol and polyethylene glycol, provided that when the compound of the formula (1) has enantiomers, diastereomers or geometric isomers, both a mixture thereof and isolated isomers are included: ##STR00001##
wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each independently a hydrogen atom, a C.sub.1-4 alkyl group, a hydroxy group, a hydroxymethyl group or a C.sub.1-4 alkoxy group, and m is an integer of 1 or 2.