Patent ID: 8399577

Claim:
A curable epoxy resin composition, comprising: an epoxy resin component, a hardener component, and optionally at least one additive, wherein: (a) said epoxy resin component is an epoxy resin compound or a mixture of epoxy resin compounds; (b) said hardener component comprises (b1) an aliphatic and cycloaliphatic or aromatic polycarbonic acid anhydride; and (b2) a polyether-amine of the general formula (I): H 2 N—(C n H 2n —O) m —C n H 2n —NH 2 (I) wherein n is an integer from 2 to 8; and m is from about 3 to about 100; (c) the polycarbonic acid anhydride is present in the curable epoxy resin composition in a concentration of 0.60 Mol to 0.93 Mol, calculated per one epoxy group weight equivalent present in the epoxy resin component of the composition; and (d) the polyether-amine of the general formula (I) is present in the curable epoxy resin composition in a concentration of about 0.02 Mol to about 0.1 Mol, calculated per one epoxy group weight equivalent present in the epoxy resin component of the composition.