Abstract: The present invention relates to curable epoxy resin compositions comprising an alkyl-substituted aromatic epoxy resin and a bis alicyclic amine hardener, which when cured exhibit preferred chemical and physical characteristics. The present invention also relates to the use of such curable resin compositions which may be cured in the presence of reinforcing fibers to form fiber-reinforced composite articles used in a variety of applications, such as in transport applications (including aerospace, aeronautical, nautical and land vehicles, and including the automotive, rail, coach and military industries), in building/construction applications or in other commercial applications, and to aerospace structural parts made from the fiber-reinforced composite articles.

Abstract: The present disclosure provides a curable resin composition including a thermoset resin, an aliphatic polyketone as a toughener and a hardener. The curable resin composition may be combined with reinforcing fibers and then cured to form a fiber-reinforced composite article having a high glass transition temperature, excellent mechanical properties and low moisture absorption. The fiber-reinforced composite article may be used in various applications, such as in transport applications including aerospace, aeronautical, nautical and land vehicles.

Abstract: The present disclosure provides a curable resin composition including a thermoset resin, an aliphatic polyketone as a toughener and a hardener. The curable resin composition may be combined with reinforcing fibers and then cured to form a fiber-reinforced composite article having a high glass transition temperature, excellent mechanical properties and low moisture absorption. The fiber-reinforced composite article may be used in various applications, such as in transport applications including aerospace, aeronautical, nautical and land vehicles.