Patent classifications
B05D2350/20
COMPOSITION FOR POWDER COATING MATERIAL, POWDER COATING MATERIAL AND 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 (α) in which the content of fluorine atoms is at least 20 mass %, and a segment (β) 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 (α) and in the segment (β) is at least 10, and at least one of the segment (α) and the segment (β) has a hydroxy group.
COATED METAL SHEET, METHOD FOR PRODUCING SAME, AND EXTERIOR BUILDING MATERIAL
This coated metal sheet for exterior covering has a metal sheet and a top coating layer disposed on the metal sheet, the top coating layer is configured from a fluororesin and contains a gloss control agent comprising 0.01-15 vol % of microporous particles and a matte agent comprising primary particles, and the coated metal sheet satisfies the belowmentioned formulae. In the number-based particle size distribution of the gloss control agent and the matte agent, R is the number average particle size (μm) of the gloss control agent, D1.sub.97.5 and D2.sub.97.5 represent the 97.5% particle size (μm) of the gloss control agent and the matte agent, Ru is the upper limit particle size (μm) of the gloss control agent, and T is the top coating layer thickness (μm).
D1.sub.97.5/T≦0.9
Ru≦1.2T
R≧1.0
0.5≦D2.sub.97.5/T≦7.0
3≦T≦40.
Fluorinated coating material, method for producing fluorinated coating material, coated article and its production method
To provide a fluorinated coating material capable of forming a coating film excellent in water repellency and substrate adhesion. Further, to provide a method for producing the coating material, a coated article and its production method. A fluorinated coating material comprising a fluorinated polymer having the following units F, the following units 1 and the following units 2: units F: at least one type of units selected from the group consisting of units based on CF.sub.3CHCHF and units based on CF.sub.3CFCH.sub.2; units 1: at least one type of units selected from the group consisting of units having a carboxy group, units based on allyl alcohol and units based on a hydroxyalkyl allyl ether; units 2: at least one type of units selected from the group consisting of units based on a vinyl ether, units based on a vinyl ester, units based on an allyl ether (excluding a hydroxyalkyl allyl ether), units based on an allyl ester and units based on a (meth)acrylic acid ester.
FLUORINATED COATING MATERIAL, METHOD FOR PRODUCING FLUORINATED COATING MATERIAL, COATED ARTICLE AND ITS PRODUCTION METHOD
To provide a fluorinated coating material capable of forming a coating film excellent in water repellency and substrate adhesion. Further, to provide a method for producing the coating material, a coated article and its production method.
A fluorinated coating material comprising a fluorinated polymer having the following units F, the following units 1 and the following units 2:
units F: at least one type of units selected from the group consisting of units based on CF.sub.3CHCHF and units based on CF.sub.3CFCH.sub.2;
units 1: at least one type of units selected from the group consisting of units having a carboxy group, units based on allyl alcohol and units based on a hydroxyalkyl allyl ether;
units 2: at least one type of units selected from the group consisting of units based on a vinyl ether, units based on a vinyl ester, units based on an allyl ether (excluding a hydroxyalkyl allyl ether), units based on an allyl ester and units based on a (meth)acrylic acid ester.
Coated metal sheet, method for producing same, and exterior building material
This coated metal sheet for exterior covering has a metal sheet and a top coating layer disposed on the metal sheet, the top coating layer is configured from a fluororesin and contains a gloss control agent comprising 0.01-15 vol % of microporous particles and a matte agent comprising primary particles, and the coated metal sheet satisfies the belowmentioned formulae. In the number-based particle size distribution of the gloss control agent and the matte agent, R is the number average particle size (m) of the gloss control agent, D1.sub.97.5 and D2.sub.97.5 represent the 97.5% particle size (m) of the gloss control agent and the matte agent, Ru is the upper limit particle size (m) of the gloss control agent, and T is the top coating layer thickness (m).
D1.sub.97.5/T0.9
Ru1.2T
R1.0
0.5D2.sub.97.5/T7.0
3T40.
Composition for powder coating material, powder coating material and 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 (?) in which the content of fluorine atoms is at least 20 mass %, and a segment (?) 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 (?) and in the segment (?) is at least 10, and at least one of the segment (?) and the segment (?) has a hydroxy group.