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 an aqueous coating composition with which a coating film having a sufficient self-cleaning function can be formed even in a case where an aqueous fluorinated resin dispersion is blended as an aqueous synthetic resin dispersion or a case where an isocyanate compound is contained as a curing agent can be formed; an aqueous coating material kit with which the aqueous coating composition can be obtained; and an article having a coated film having a sufficient self-cleaning function. An aqueous coating composition, which comprises an aqueous synthetic resin dispersion and a urethane polyol, wherein the urethane polyol is a reaction product of a polyoxyalkylene diol having as units an oxyalkylene group of a structure such that an oxygen atom is bonded to one end of a branched alkylene group, and an aliphatic diisocyanate.

Abstract: To provide a production method for obtaining a coated article provided with a coating film having excellent weather resistance by using a powder coating material. A method for producing a coated article, which comprises applying a powder coating material comprising a fluororesin (A), a non-fluororesin (B) and a metallic pigment (C) to the surface of a substrate, and heating the substrate having the powder coating material applied, to a temperature of at least the glass transition temperature of the fluororesin (A) and the non-fluororesin (B), followed by cooling, to form a coating film on the substrate surface, and which is characterized in that the content of the metallic pigment (C) is from 0.7 to 23 mass % to the total amount of the powder coating material, the PCI value of the coating film is at least 6, and the flip-flop value is at least 1.2.

Abstract: To provide a powder coating material capable of forming a film excellent in metallic hue, concealing property and weather resistance. The powder coating material comprises the following fluororesin (A), the following resin (B) and the following pigment (C) as constituents thereof, wherein the content of the pigment (C) is from 0.7 to 23 mass %; Fluororesin (A): a fluororesin having a fluorine content of at least 10 mass %; Resin (B): a resin having a SP value larger than that of the fluororesin (A), and the difference between the SP value thereof and the SP value of the fluororesin (A) is at least 0.4 (J/cm3)1/2; Pigment (C): a pigment which is a metallic pigment covered with a covering material, and the SP value of the covering material exceeds the SP value of the fluororesin (A) and less than the SP value of the resin (B).

Abstract: To provide a process for producing a fluoroolefin copolymer powder for powder coating material, which presents excellent stability of a fluoroolefin copolymer solution obtainable by polymerization in its production process, and which is capable of forming a cured film having an excellent appearance when used for a powder coating material. A monomer mixture comprising specific monomers is polymerized in an organic solvent in the presence of specific amounts of hydrotalcite and at least one compound (B) selected from a potassium salt, a sodium salt, a magnesium salt and a hindered amine-type light stabilizer, to obtain a suspension; an insoluble component is removed from the suspension to obtain a fluoroolefin copolymer solution having a pH of from 3.8 to 6.5 and an APHA value within a range of from 1 to 200; and the organic solvent is removed from the solution to obtain the fluoroolefin copolymer powder.

Abstract: To provide a composition for powder coating material capable of forming a coating film having excellent water and oil repellency, capable of maintaining excellent water and oil repellency even when the surface is rubbed or when used in an environment in contact with water, and having excellent resistance to adhesion of organisms such that organisms such as mold, algae, etc. are less likely to adhere thereto; a powder coating material; and a coated article. The composition for powder coating material comprises polymer (A) composed of at least one member selected from polymer (A1) and polyvinylidene fluoride, and polymer (B). The polymer (A1) is a fluorinated non-block copolymer having units based on a fluoroolefin and units based on a monomer having a crosslinkable group.

Abstract: To provide a composition for powder coating material capable of forming a coating film which does not have appearance defects such as seeding, cissing, etc. and which is excellent in surface smoothness; a powder coating material using said composition for powder coating material; and a coated article that has a coating film formed by the powder coating material. The powder coating composition comprises a fluoropolymer having units derived from a fluoroolefin, of which the melt viscosity at 190° C. measured by a rotary rheometer at a temperature raising rate of 10° C./min is within a range of from 0.1 to 25 Pa·s, and fine particles which are composed of at least one member selected from silica, alumina, titania and zinc oxide and of which the specific surface area is from 10 to 500 m2/g and the average primary particle size is within a range of from 0.1 to 100 nm, wherein the fine particles are contained in an amount of from 0.01 to 10 parts by mass to 100 parts by mass of the fluoropolymer.

Abstract: To provide a coated article, in which formation of a cured film having a fluororesin layer and a polyester layer is not cumbersome, and the cured film is excellent in weather resistance. A coated article having a cured film formed by coating a substrate with a powder coating material comprising a fluorinated polymer (A), a polyester polymer (B), an ultraviolet absorber (C) and titanium oxide (E), wherein the thickness of the cured film is from 20 to 1,000 ?m, the atom number concentration of Ti element present in a region (I) within 5 ?m in depth from the surface of the cured film is from 0 to 9%, the atom number concentration of Ti element present in a region (II) beyond 10 ?m in depth from the surface of the cured film is from 8.5 to 10%, and the proportion of the ultraviolet absorber (D) contained in the region (I) (100 mass %) is from 0.5 to 10 mass %.

Abstract: To provide a composition for powder coating material capable of obtaining a powder coating material capable of forming a coating film having excellent weather resistance and bending processability; a powder coating material capable of forming a coating film having excellent weather resistance and bending processability; and a coated article having the coating film having excellent weather resistance and bending processability, on its surface. The composition for powder coating material comprises the following polyvinylidene fluoride (A) and at least one resin (B) selected from a group consisting of an acrylic resin, a polyester resin and an epoxy resin, wherein the content of the polyvinylidene fluoride (A) is 30 to 90 parts by mass relative to the total of 100 parts by mass of the polyvinylidene fluoride (A) and the resin (B). The polyvinylidene fluoride (A) has a melting point of 151 to 170° C. and a heterologous sequence ratio of 11 to 37%.

Abstract: To provide a process for producing a powder coating material capable of forming a cured film which is excellent in weather resistance and which has few voids (gaps); a coated article having such a cured film; and a method for producing a carboxy group-containing fluororesin less susceptible to gelation. A process for producing a powder coating material containing a powder (X) composed of a composition (a) comprising a fluororesin (A) having carboxy groups, or alkoxysilyl groups and urethane bonds, and a curing agent (D), said process comprising (a) a step of melt-kneading a mixture comprising a hydroxy group-containing fluororesin (B), an acid anhydride (C1) or a compound (C2) having an alkoxysilyl group and an isocyanate group, and the curing agent (D), to obtain a kneaded product composed of the composition (?), and (b) a step of pulverizing the kneaded product to obtain the powder (X).

Abstract: To provide a powder coating material capable of forming, by one coating, a cured film which has a double-layered structure comprising a cured resin layer and a fluororesin layer and which is excellent in weather resistance, wherein the fluororesin layer is less likely to be peeled for a long period of time; a coated article; and processes for their production. The powder coating material comprises a powder (X) composed of a composition (?) comprising a fluororesin (A) and an ultraviolet absorber (B), and a powder (Y) composed of a composition (?) comprising a thermosetting resin (C) other than a fluororesin, a curing agent (D) and a light stabilizer (E).

Abstract: To provide an aqueous coating composition with which a coating film having a sufficient self-cleaning function can be formed even in a case where an aqueous fluorinated resin dispersion is blended as an aqueous synthetic resin dispersion or a case where an isocyanate compound is contained as a curing agent can be formed; an aqueous coating material kit with which the aqueous coating composition can be obtained; and an article having a coated film having a sufficient self-cleaning function. An aqueous coating composition, which comprises an aqueous synthetic resin dispersion and a urethane polyol, wherein the urethane polyol is a reaction product of a polyoxyalkylene diol having as units an oxyalkylene group of a structure such that an oxygen atom is bonded to one end of a branched alkylene group, and an aliphatic diisocyanate.

Abstract: To provide a coating composition for back coating, by which, in a solar heat-collecting reflector, a cured coating film layer excellent in durability such as heat resistance or water resistance and excellent in weather resistance, scratch resistance and impact resistance, can be formed, and a solar heat-collecting reflector having such a cured coating film layer. A coating composition for back coating to be used for the production of a solar heat-collecting reflector, which comprises a fluoropolymer (A) having units (A1) derived from a fluoroolefin and units (A2) having a crosslinkable group. A solar heat-collecting reflector having a cured coating film layer formed by the coating composition.

Abstract: To provide a coating composition for back coating, by which, in a solar heat-collecting reflector, a cured coating film layer excellent in durability such as heat resistance or water resistance and excellent in weather resistance, scratch resistance and impact resistance, can be formed, and a solar heat-collecting reflector having such a cured coating film layer. A coating composition for back coating to be used for the production of a solar heat-collecting reflector, which comprises a fluoropolymer (A) having units (A1) derived from a fluoroolefin and units (A2) having a crosslinkable group. A solar heat-collecting reflector having a cured coating film layer formed by the coating composition.

Abstract: The present invention is to provide a coating composition for surface coating capable of forming a cured coating film layer that protects a reflective substrate of a solar heat-collecting reflective plate and that is excellent in the impact resistance and the weather resistance such as the heat resistance and the water resistance, as well as a solar heat-collecting reflective plate having such a cured coating film layer, and a process for its production. A coating composition for surface coating to be used for the production of a solar heat-collecting reflective plate having a reflective substrate made of metal, which comprises a fluoropolymer (A) having units (A1) derived from a fluoroolefin and units (A2) having a crosslinkable group. Further, a solar heat-collecting reflective plate having a cured coating film layer formed from the coating composition for surface coating, and a process for its production.