A coating composition comprising a blend of one or more polyester resins and a low molecular weight highly functional resin component is described herein, where the coating composition is in the form of a powder and is configured to form a thin coating that demonstrates optimal adhesion to the substrate.

According to an example aspect of the present invention, there is provided a method of preparing a transparent varnish composition. The method comprises the steps of providing a binder, adding to the binder 1 to 40 wt % precipitated calcium carbonate particles by weight of the composition, wherein the precipitated calcium carbonate particles have an average D.sub.50 particle size of 60 to 120 nm measured by dynamic light scattering, fewer than 10% of the precipitated calcium carbonate particles by volume of the total precipitated calcium carbonate particles have a particles size of 75 nm or less, fewer than 10% of the precipitated calcium carbonate particles by volume of the total precipitated calcium carbonate particles have a particles size of 110 nm or more, the steepness of the particle size distribution is in the range of 1.3-1.55, and dispersing the precipitated calcium carbonate in the composition.

According to an example aspect of the present invention, there is provided a method of preparing a transparent varnish composition. The method comprises the steps of providing a binder, adding to the binder 1 to 40 wt % precipitated calcium carbonate particles by weight of the composition, wherein the precipitated calcium carbonate particles have an average D.sub.50 particle size of 60 to 120 nm measured by dynamic light scattering, fewer than 10% of the precipitated calcium carbonate particles by volume of the total precipitated calcium carbonate particles have a particles size of 75 nm or less, fewer than 10% of the precipitated calcium carbonate particles by volume of the total precipitated calcium carbonate particles have a particles size of 110 nm or more, the steepness of the particle size distribution is in the range of 1.3-1.55, and dispersing the precipitated calcium carbonate in the composition.

There is provided a resin composition including (a) an acrylic polymer having a tensile modulus of 200 MPa or less, (b) a resin that is solid at 25° C., (c) a resin that is liquid at 25° C. and crosslinkable with at least one of the component (a) or the component (b), and (d) a polymerization initiator. The content of the component (a) is 35 parts by weight or more and 93 parts by weight or less, the content of the component (b) is 3 parts by weight or more and 60 parts by weight or less, and the content of the component (c) is 1 part by weight or more and 25 parts by weight or less, based on 100 parts by weight of the total amount of the component (a), the component (b), and the component (c).

There is provided a resin composition including (a) an acrylic polymer having a tensile modulus of 200 MPa or less, (b) a resin that is solid at 25° C., (c) a resin that is liquid at 25° C. and crosslinkable with at least one of the component (a) or the component (b), and (d) a polymerization initiator. The content of the component (a) is 35 parts by weight or more and 93 parts by weight or less, the content of the component (b) is 3 parts by weight or more and 60 parts by weight or less, and the content of the component (c) is 1 part by weight or more and 25 parts by weight or less, based on 100 parts by weight of the total amount of the component (a), the component (b), and the component (c).

The inventive concept relates to a complex for detecting gas responsive to gas to be tested. The complex for the detecting the gas contains a nanostructure made of an oxide semiconductor, and a Terbium (Tb) additive supported on the nanostructure.

A method for producing a labeled printed circuit board, as well as a labeled electric printed circuit board. In order to provide a method for producing a labeled printed circuit board that is particularly fast and energy-conserving and does not require any systems with high procurement and operating costs, initially a substrate with conductor tracks is supplied, which is then coated with a functional lacquer layer on at least one surface. A labeling of the substrate in different color shades of the functional lacquer layer is also carried out.

A method for producing a labeled printed circuit board, as well as a labeled electric printed circuit board. In order to provide a method for producing a labeled printed circuit board that is particularly fast and energy-conserving and does not require any systems with high procurement and operating costs, initially a substrate with conductor tracks is supplied, which is then coated with a functional lacquer layer on at least one surface. A labeling of the substrate in different color shades of the functional lacquer layer is also carried out.

Coating compositions for coating an oilfield operational component, and related methods, may include in some aspects a coating composition having a trifunctional silane, a silanol, and a filler. The coating composition may be applied to a surface of the oilfield operational component that is configured to be exposed to a fluid. The coating composition may be applied to at least partially cover or coat the surface. The coating composition may be configured to chemically bond with a cured primer composition that includes an epoxy.

Coating compositions for coating an oilfield operational component, and related methods, may include in some aspects a coating composition having a trifunctional silane, a silanol, and a filler. The coating composition may be applied to a surface of the oilfield operational component that is configured to be exposed to a fluid. The coating composition may be applied to at least partially cover or coat the surface. The coating composition may be configured to chemically bond with a cured primer composition that includes an epoxy.