Coating compositions

A curable powder coating resin composition comprising (I) at least one thermoset resin composition;

• and (II) at least one hardener;
• wherein when the powder coating is cured, the resulting cured product has a combination of a high glass transition temperature of greater than about 150° C., when cured with dicyandiamide and a moisture absorption of less than 3.9 weight percent, wherein the thermoset resin composition comprises an epoxy resin represented by the following general Formula I:
• Ra is a hydrogen or methyl group;
• R1 and R2, independently from each other, each represents a hydrogen atom, a halogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group;
• a nitrile group;
• a nitro group;
• a substituted or unsubstituted alkoxy group;
• X is CH2, CH(R3), or C(R3)(R4);
• m is an integral number between 8 and 20;
• R3 and R4 independently from each other, each represents a hydrogen atom, a halogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group;
• and n is an integer having a value from 0 to 10.