Powder coating resins and coatings made using the powder coating resins are described. The powder coating resins are based on the use of C.sub.12 to C.sub.23 diacids. The C.sub.12 to C.sub.23 diacids are reacted with a reactant having an alcohol functionality and an amine functionality to form a carboxylic acid terminated polymer having ester and amide functionality. Alternatively, the C.sub.12 to C.sub.23 diacids are reacted with a reactant having an alcohol functionality and an amine functionality to form an intermediate polyol, which is then reacted with acetoacetic acid or an ester thereof to form an acetoacetate-terminated polymer.

An embodiment of the present invention relates to a film including a layer A, and a layer B provided on at least one surface of the layer A, in which a dielectric loss tangent of the film is 0.010 or less, and a ratio of an absorbance of the layer B at a wavelength of 355 nm to an absorbance of the layer A at a wavelength of 355 nm is 0.45 or more and 1.00 or less, and a laminate including a film having a layer A and a layer B, and a metal layer or a metal wire on a B layer side of the film, in which a dielectric loss tangent of the film is 0.010 or less, and a ratio of an absorbance of the layer B at a wavelength of 355 nm to an absorbance of the layer A at a wavelength of 355 nm is 0.45 or more and 1.00 or less.

An embodiment of the present invention relates to a film including a layer A, and a layer B provided on at least one surface of the layer A, in which a dielectric loss tangent of the film is 0.010 or less, and a ratio of an absorbance of the layer B at a wavelength of 355 nm to an absorbance of the layer A at a wavelength of 355 nm is 0.45 or more and 1.00 or less, and a laminate including a film having a layer A and a layer B, and a metal layer or a metal wire on a B layer side of the film, in which a dielectric loss tangent of the film is 0.010 or less, and a ratio of an absorbance of the layer B at a wavelength of 355 nm to an absorbance of the layer A at a wavelength of 355 nm is 0.45 or more and 1.00 or less.

Powder coating resins and coatings made using the powder coating resins are described. The powder coating resins are based on the use of C.sub.12 to C.sub.23 diacids. The C.sub.12 to C.sub.23 diacids are reacted with a reactant having an alcohol functionality and an amine functionality to form a carboxylic acid terminated polymer having ester and amide functionality. Alternatively, the C.sub.12 to C.sub.23 diacids are reacted with a reactant having an alcohol functionality and an amine functionality to form an intermediate polyol, which is then reacted with acetoacetic acid or an ester thereof to form an acetoacetate-terminated polymer.

Powder coating resins and coatings made using the powder coating resins are described. The powder coating resins are based on the use of C.sub.12 to C.sub.23 diacids. The C.sub.12 to C.sub.23 diacids are reacted with a reactant having an alcohol functionality and an amine functionality to form a carboxylic acid terminated polymer having ester and amide functionality. Alternatively, the C.sub.12 to C.sub.23 diacids are reacted with a reactant having an alcohol functionality and an amine functionality to form an intermediate polyol, which is then reacted with acetoacetic acid or an ester thereof to form an acetoacetate-terminated polymer.

A polymer composition including particles having a ratio of an average particle diameter D90 to an average particle diameter D50 of 2.3 or less, and a polymer having a dielectric loss tangent of 0.01 or less, and applications thereof.

A polymer composition including particles having a ratio of an average particle diameter D90 to an average particle diameter D50 of 2.3 or less, and a polymer having a dielectric loss tangent of 0.01 or less, and applications thereof.

Provided is a polymer film including a material A which is a liquid at 260 C., and a material B which is a solid at 260 C., in which the material A and the material B are phase-separated, in a cross section of the polymer film along a thickness direction, a ratio of a total length of phase-separated interfaces between the material A and the material B to a length of the polymer film in a direction perpendicular to the thickness direction at a thickness of 50 um is 2 or more, and the polymer film has an elastic modulus at 160 C. of 0.60 MPa or less, and a dielectric loss tangent of 0.01 or less.

Provided is a polymer film including a material A which is a liquid at 260 C., and a material B which is a solid at 260 C., in which the material A and the material B are phase-separated, in a cross section of the polymer film along a thickness direction, a ratio of a total length of phase-separated interfaces between the material A and the material B to a length of the polymer film in a direction perpendicular to the thickness direction at a thickness of 50 um is 2 or more, and the polymer film has an elastic modulus at 160 C. of 0.60 MPa or less, and a dielectric loss tangent of 0.01 or less.

A coating composition includes alkaline mineral particles including an oxide of an alkaline earth metal and an amine-containing polymer. The amine-containing polymer is adsorbed on the alkaline mineral particles. Forming a coating composition includes at least partially coating alkaline mineral particles with an amine-containing polymer and dispersing the alkaline mineral particles in a liquid to yield the coating composition. The alkaline mineral particles include an oxide of an alkaline earth metal.