The present description provides a Michael Addition curable composition, comprising A) at least one reactive donor capable of providing two or more nucleophilic carbanions; B) at least one reactive acceptor comprising two or more carbon-carbon double bonds; and C) at least one catalyst for catalyzing the Michael Addition crosslinking reaction between the at least one reactive donor and the at least one reactive acceptor. The present description further provides a coating composition containing the composition and a coated article made therefrom.

A paint contains a zinc powder, a binding agent made of an organic resin, and an inorganic material that is water-soluble and exhibits alkalinity when being dissolved in water. The inorganic material can be, for example, one that provides a saturated aqueous solution having a pH of 12 or less. For example, the basic substance may be barium carbonate, barium hydrogen phosphate, beryllium carbonate, calcium carbonate, calcium hydrogen phosphate, calcium phosphate, lithium carbonate, lithium phosphate, magnesium carbonate, basic magnesium carbonate, magnesium hydroxide, magnesium oxide, or magnesium phosphate.

A paint contains a zinc powder, a binding agent made of an organic resin, and an inorganic material that is water-soluble and exhibits alkalinity when being dissolved in water. The inorganic material can be, for example, one that provides a saturated aqueous solution having a pH of 12 or less. For example, the basic substance may be barium carbonate, barium hydrogen phosphate, beryllium carbonate, calcium carbonate, calcium hydrogen phosphate, calcium phosphate, lithium carbonate, lithium phosphate, magnesium carbonate, basic magnesium carbonate, magnesium hydroxide, magnesium oxide, or magnesium phosphate.

An adhesion promoter comprises a reaction product of: a) a polyepoxide; b) an aminosilane represented by the formula HNR.sup.1R.sup.2. R.sup.1 and R.sup.2 independently represent —Z—SiL.sub.3. Each Z independently represents a divalent linking group having from 1 to 12 carbon atoms, and each L independently represents a hydrolyzable group; and c) an isocyanatosilane represented by the formula O═C═N—Z—SiL.sub.3, wherein Z and L are as previously defined. The adhesion promoter may be used to treat a surface of a substrate such as an abrasive particle, which may be included in a resin-bond abrasive article.

A zirconium nitride powder having a volume resistivity of 107 Ω.Math.cm or more in the state of the pressurized powder body hardened at a pressure of 5 MPa, and a particle size distribution D90 of 10 μm or less when ultrasonically dispersed for 5 minutes in a state of being diluted with water or an alcohol having a carbon number of which is in a range of 2 to 5. Also, the zirconium nitride powder is dispersed in an acrylic monomer or an epoxy monomer to prepare a monomer dispersion. Further, the zirconium nitride powder is dispersed in a dispersing medium as a black pigment and further a resin is mixed to prepare a black composition.

A zirconium nitride powder having a volume resistivity of 107 Ω.Math.cm or more in the state of the pressurized powder body hardened at a pressure of 5 MPa, and a particle size distribution D90 of 10 μm or less when ultrasonically dispersed for 5 minutes in a state of being diluted with water or an alcohol having a carbon number of which is in a range of 2 to 5. Also, the zirconium nitride powder is dispersed in an acrylic monomer or an epoxy monomer to prepare a monomer dispersion. Further, the zirconium nitride powder is dispersed in a dispersing medium as a black pigment and further a resin is mixed to prepare a black composition.

A zirconium nitride powder having a volume resistivity of 107 Ω.Math.cm or more in the state of the pressurized powder body hardened at a pressure of 5 MPa, and a particle size distribution D90 of 10 μm or less when ultrasonically dispersed for 5 minutes in a state of being diluted with water or an alcohol having a carbon number of which is in a range of 2 to 5. Also, the zirconium nitride powder is dispersed in an acrylic monomer or an epoxy monomer to prepare a monomer dispersion. Further, the zirconium nitride powder is dispersed in a dispersing medium as a black pigment and further a resin is mixed to prepare a black composition.

One embodiment of the present invention provides a curable composition, including a polyfunctional isocyanate compound, a compound selected from the group consisting of a multivalent alcohol and an epoxy compound, and a base amplifier.

An object of the present invention is to provide a light- or heat-curing method by which a cured product (crosslinked product or resin) can be prepared in a simple method even in a case where filler is contained in a large amount; a curable resin composition which is used in the curing method; and the like. The present invention provides a light- or heat-curing method containing a step 1 of obtaining (E) a condensate having constitutional units of Si—O—Al and/or Si—O—Si, obtained from aluminum derived from an aluminum alkoxide and a silane derived from a silane coupling agent having a mercapto group, from (A) a compound that is formed of a salt of a carboxylic acid and an amine and has a carbonyl group generating a radical and a carboxylate group generating a base through decarboxylation by irradiation with light or heating, the (B) aluminum alkoxide, the (C) silane coupling agent having a mercapto group, and (D) water, and a step 2 of performing a reaction among the (E) condensate, (H) a compound having two or more polymerizable unsaturated groups, and (I) filler under the conditions of irradiation with light or heating in the presence of the (A) compound; a curable resin composition which is used in the curing method; and the like.

An object of the present invention is to provide a light- or heat-curing method by which a cured product (crosslinked product or resin) can be prepared in a simple method even in a case where filler is contained in a large amount; a curable resin composition which is used in the curing method; and the like. The present invention provides a light- or heat-curing method containing a step 1 of obtaining (E) a condensate having constitutional units of Si—O—Al and/or Si—O—Si, obtained from aluminum derived from an aluminum alkoxide and a silane derived from a silane coupling agent having a mercapto group, from (A) a compound that is formed of a salt of a carboxylic acid and an amine and has a carbonyl group generating a radical and a carboxylate group generating a base through decarboxylation by irradiation with light or heating, the (B) aluminum alkoxide, the (C) silane coupling agent having a mercapto group, and (D) water, and a step 2 of performing a reaction among the (E) condensate, (H) a compound having two or more polymerizable unsaturated groups, and (I) filler under the conditions of irradiation with light or heating in the presence of the (A) compound; a curable resin composition which is used in the curing method; and the like.