Patent ID: 8859695

Claim:
A heat-curing epoxy resin composition, comprising: an epoxy resin A having more than one epoxy group per molecule on average; a curing agent B for epoxy resins, the curing agent B being activated at a temperature in a range of 100° C. to 220° C.; and an activator C for epoxy resin compositions, wherein activator C is a compound of formula (I), or is a reaction product between a compound of formula (Ia) and an isocyanate or an epoxide; where: n is 1, 2, 3, or 4; R 1 is an n-valent, optionally hetero atom-containing aliphatic, cycloaliphatic, or aromatic organic radical, or else R 1 is a radical of formula (II): where: i, j, and k are each independently a number from 0 to 10, provided that the sum of i and j is at least 2; X is O, S, or NR 7 ; Y is OR 7 , SR 7 , or N(R 7 )(R 7′ ) or a substituent of formula (III): where: R 2′ and R 3′ each independently stands for H, OH, a halogen, NH 2 , NHR 7 , N(R 7 ) 2 , an alkoxy group, an alkyl group, an aryl group, an alkylaryl group, or an arylalkyl group, or R 2′ together with R 3′ is an optionally substituted aliphatic or aromatic ring; R 7 and R 7′ each independently stands for H, or an alkyl, cycloalkyl, aralkyl, or aryl group with 1 to 8 carbon atoms; R 2 and R 3 each independently stands for OH, a halogen, NH 2 , NHR 7 , N(R 7 ) 2 , an alkoxy group, an alkyl group, an aryl group, an alkylaryl group, or an arylalkyl group, or R 2 together with R 3 is a substituted or unsubstituted aliphatic or aromatic ring; R 4 and R 5 each independently stands for H, OH, or R 4 together with R 5 is a substituted or unsubstituted aliphatic or aromatic ring; at least one of R 2 , R 3 , R 4 , and R 5 is different from H; and if R 2′ and/or R 3′ are present, at least three of R 2 , R 2′ , R 3 , and R 3′ are different from H.