Abstract: To provide a powder coating material capable of forming a coating film excellent in weather resistance, coating film appearance and surface smoothness; and a coated article having a coating film made of such a powder coating material. A powder coating material comprising a powder composed of a first composition which is a first composition for powder coating material comprising a fluororesin having a fluorine content of at least 10% by mass and a plasticizer having a melting point of from 60 to 200° C. and having a cyclic hydrocarbon group in the molecule, wherein the content of the plasticizer is from 0.1 to 40 parts by mass, to 100 parts by mass of the resin component contained in the first composition.

Abstract: To provide a repairing method, by which a coated article having high adhesion between a PVDF coating film and a repair coating film and favorable processability of the repair coating film can be obtained, and a repaired coated article. A method for repairing a first coating film, which comprises applying a second coating material (repairing coating material) to a position to be repaired of a first coating film (PVDF coating film) formed by applying a first coating material to the surface of a substrate, to form a second coating film (repair coating film) thereby to repair the first coating film, wherein the first coating material is a powder coating material containing PVDF (A) and a resin (B), wherein the second coating material is a coating material containing a fluororesin (L) and a titanium oxide pigment (M), and wherein the content of the titanium oxide pigment (M) is from 15 to 190 parts by mass per 100 parts by mass of the fluororesin (L).

Abstract: To provide a method for evaluating the weather resistance by which the weather resistance of a fluorinated coating film can be evaluated accurately in a short time. A method for evaluating the weather resistance of a fluorinated coating film, which comprises a fluorinated coating film deterioration step (I) comprising a step (ia) of exposing the fluorinated coating film to xenon arc radiation and a step (ib) of attaching an aqueous hydrogen peroxide solution to the fluorinated coating film under xenon arc radiation to wet the fluorinated coating film, and an evaluation step (II) of comparing characteristics of the fluorinated coating film as between before and after the deterioration step (I) to evaluate the weather resistance of the fluorinated coating film.

Abstract: To provide a composition for powder coating material which can be sufficiently pulverized, and with which a powder coating material capable of forming a coating film excellent in weather resistance and adhesion to the substrate can be obtained; a powder coating material capable of forming a coating film excellent in weather resistance and adhesion to the substrate; and a coated article having a coating film excellent in weather resistance and adhesion to the substrate, on its surface. A composition for powder coating material comprising a polyvinylidene fluoride (A) having a melting point of from 151 to 200° C., and an acrylic resin (B) having a glass transition temperature of from 40 to 90° C. A powder coating material comprising the composition for powder coating material, and a coated article having a coating film formed of the powder coating material.

Abstract: To provide a powder paint whereby an external defect such as orange-peel skin is less likely to be formed on a formed cured film. The powder paint is characterized by comprising: a fluororesin (A); from 2 to 60 mass ppm relative to the fluororesin (A), of at least one metal element (B) selected from a group comprising potassium, sodium, and magnesium; from 10 to 10,000 mass ppm relative to the fluororesin (A), of a light stabilizer (C); and from 10 to 5,000 mass ppm relative to the fluororesin (A), of a polymerization inhibitor (D).

Abstract: To provide a powder coating material capable of forming a coating film excellent in acid resistance, weather resistance and stain resistance; and a coated article having such a coating film. A powder coating material (I) containing a powder (X1) composed of a composition (X1) comprising a fluororesin (A1) and the following anti-staining agent (B); a powder coating material (II) comprising a powder (X2) composed of a composition (X2) containing a fluororesin (A1), and a powder (Y) composed of a composition (Y) containing a resin (A2) other than a fluororesin, wherein at least one of the compositions (X2) and (Y) contains an anti-staining agent (B) which is a fluorinated surfactant (B1) or a salt (B2) of an organic sulfonic acid ion, an organic carboxylic acid ion or an organic phosphoric acid ester ion, with an alkali metal ion, an alkaline earth metal ion, an amphoteric metal ion or an organic ammonium ion.