Agc Inc.

Asahi Glass Company, Limited

Masataka Aikawa

Shun Saito

Shuhei Ochi

Sho Masuda

Mizuna Toyoda

Takashi Takayanagi

To provide a process for producing a coated article, capable of producing a coated article having a coating film excellent in weather resistance, using a powder coating material. A process for producing a coated article having a substrate, comprising: applying a curable powder coating material containing a curable polymer containing no fluorine atom, a curing agent and a pigment to a surface of a substrate, to form a first coating layer composed of the curable powder coating material, then applying a powder coating material containing a fluorinated polymer and containing no pigment to a surface of the first coating layer, to form a second coating layer composed of the powder coating material, and heating the first coating layer and the second coating layer simultaneously to form a coating film on the surface of the substrate.

Process for producing coated article

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.

Method for producing coated article

To provide a powder coating material excellent in blocking resistance and capable of forming a coating film excellent in color tone and weather resistance in which the occurrence of color unevenness is suppressed, a method for its production, and a coated article having a coating film formed from the powder coating material. The powder coating material comprises a resin powder, a luster pigment and a binder, wherein the resin powder contains a fluororesin and a non-fluororesin, the binder contains a surfactant having a melting point of at least 25&#xb0; C., and the luster pigment is bonded to the particle surfaces of the resin powder via the binder.

Powder coating material, method for producing powder coating material, and coated article

A powder coating material capable of forming a coating film that is excellent in weather resistance, processability and impact resistance and that improves corrosion resistance of a substrate (in particular, a substrate made of aluminum or of an aluminum alloy), wherein the powder coating material contains a powder of a resin composition, wherein the resin composition contains a fluorinated polymer (A) having a number average molecular weight of from 10,000 to 50,000 and a fluorine content of at least 10 mass %, a resin (B) having a fluorine content of less than 10 mass % or containing no fluorine atom, a curing agent, a plasticizer having a melting point of from 50 to 150&#xb0; C. and core-shell particles, and wherein the absolute value of the difference between the melting point of the plasticizer and the glass transition temperature of a polymer of a shell portion in the core-shell particles is within 30&#xb0; C. and the content of the plasticizer is from 5 to 25 parts by mass based on 100 parts by mass of the fluorinated polymer (A).

Powder coating material, method for producing substrate provided with coating film and coated article

An object of the present invention is to provide a powder coating material capable of forming a coating film excellent in weather resistance, whereby formation of color unevenness or pinholes is suppressed. Further, another object of the present invention is to provide a method for producing the powder coating material and a coated article. The powder coating material of the present invention comprises a powder component containing a fluorinated copolymer which has repeating units based on a fluoroolefin and repeating units based on a monomer having no fluorine atom and which has a fluorine content of at least 10 mass %, and a plasticizer-covered luster pigment, wherein the plasticizer has a melting point of from 30 to 200&#xb0; C. and a molecular weight of from 200 to 1,000 and which has from 1 to 4 ester groups in one molecule.

The invention provides 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/cm); 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).

Powder coating material, coated article, and method for producing coated article

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 (&#x3b1;) comprising a fluororesin (A) and an ultraviolet absorber (B), and a powder (Y) composed of a composition (&#x3b2;) comprising a thermosetting resin (C) other than a fluororesin, a curing agent (D) and a light stabilizer (E).

Powder coating material, coated article and processes for their production

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).

Powder paint and painted article

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 &#x3bc;m, the atom number concentration of Ti element present in a region (I) within 5 &#x3bc;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 &#x3bc;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 %.

Coated article

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. The polymer (B) is a fluorinated block copolymer having a segment (&#x3b1;) in which the content of fluorine atoms is at least 20 mass %, and a segment (&#x3b2;) in which the content of fluorine atoms is less than 20 mass %, wherein the difference in the numerical value of the content of the fluorine atoms represented by mass %, between in the segment (&#x3b1;) and in the segment (&#x3b2;) is at least 10, and at least one of the segment (&#x3b1;) and the segment (&#x3b2;) has a hydroxy group.

Composition for powder coating material, powder coating material and coated article

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&#xb0; C., and an acrylic resin (B) having a glass transition temperature of from 40 to 90&#xb0; 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.

Composition for powder coating material, powder coating material, and coated article

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.

Aqueous coating composition, aqueous coating material kit and article having coated film

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.

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Chiyoda-ku, Japan

Masataka Aikawa