Patent ID: 8741988

Claim:
An epoxy resin formulation comprising: a) at least one epoxy resin as component A and b) at least one compound of the following formula I as component B wherein each R 1 and R 2 , independently, is hydrogen, C 1 -C 6 -alkyl, C 1 -C 4 -alkoxy-C 1 -C 4 -alkyl, C 5 -C 6 -cycloalkyl, phenyl, phenyl-C 1 -C 4 -alkyl, C 2 -C 6 -alkenyl or C 2 -C 6 -alkynyl, or R 1 and R 2 together are a C 3 -C 11 -alkylene group; and each R 3 and R 4 , independently, is hydrogen, C 1 -C 6 -alkyl, C 1 -C 4 -alkoxy-C 1 -C 4 -alkyl, C 5 -C 6 -cycloalkyl, phenyl, phenyl-C 1 -C 4 -alkyl, C 2 -C 6 -alkenyl or C 2 -C 6 -alkynyl, or R 3 and R 4 together are a C 4 -C 6 -alkylene group, or a mixture thereof.