Patent ID: 8728271

Claim:
A thermosetting epoxy resin composition comprising: at least one epoxy resin EH having, on average, more than one epoxide group per molecule; an inorganic filler containing at least one metal atom selected from the group consisting of Ca atoms, Si atoms, Al atoms, and mixtures thereof; and at least one silane of formula (I); wherein A is an optionally branched alkylene group containing 1 to 4 C atoms, or a phenylene group; wherein Z 1 is H or an alkyl group containing 1 to 4 C atoms; wherein Z 2 is H, a phenyl group, or an alkyl group containing 1 to 8 C atoms; wherein Z 3 is: H, a monofunctional aromatic or cycloaliphatic or aliphatic group containing 1 to 8 C atoms, which optionally contains at least one carboxylate, nitrile, nitro, phosphonate, or sulfonic or sulfonate group, or a group having a formula of A-Si(Z 2 ) 3-a (OZ 1 ) a ; wherein Z 4 is H or a monofunctional aromatic or cycloaliphatic or aliphatic group containing 1 to 8 C atoms; wherein Z 5 is: a b-functional aromatic or araliphatic or cycloaliphatic or aliphatic group containing 1 to 40 C atoms, or a group having a formula of A-Si(Z 2 ) 3-a (OZ 1 ) a ; wherein X is 0 or S; wherein a is 1 or 2 or 3; and wherein b is 1 or 2 or 3 or 4; with the proviso that either Z 3 or Z 4 is H.