Patent ID: 8436079

Claim:
A curable epoxy resin composition consisting of (a) an epoxy resin, wherein the epoxy resin consists of at least one epoxidation product of a natural unsaturated oil or a derivative thereof; (b) a combination of an antioxidant (b1) and an UV absorber (b2) comprising a benzotriazole component, characterized in that the antioxidant (b1) is a compound of the general formula (I) wherein R 1 =—H, —OH, —O—C 1-18 alkyl, —C 1-18 alkyl, —C 5-12 cycloalkyl being unsubstituted or being substituted with C 1-6 alkyl or C 1-6 alkoxy, or —CH 2 —C 5-12 cycloalkyl being unsubstituted or substituted with C 1-6 alkyl or C 1-6 alkoxy; R 2,3,4,5 =independent from each other —C 1-6 alkyl; and R 6 =a bivalent aliphatic, cycloaliphatic or aromatic residue, and wherein the weight ratio between components (a) and (b) is from 90.0:10.0 to 98.5:1.5, with the proviso that the weight portion of the component (b1) is at least 0.5; and optionally: (c) a curing agent or initiator system; (d) a filler selected from metal powder, wood flour, glass powder, glass beads, semi-metal oxide, metal oxide, metal hydroxide, semi-metal carbide, metal carbide, metal carbonate, metal sulfide, rock flour, zeolite, talc, mica, kaolin, wollastonite, and mixture thereof; and (e) an additive selected from a flame retardant, sterically hindered phenol, diluent, colorant, pigment, fungicide, curing accelerator, thixotropic agent, hydrophobic agent, antistatic, lubricant, anti-precipitation agent, wetting agent, demoulding agent and mixture thereof.