Curable compositions having improved adhesion performance

A curable composition comprising:

• (A) at least one cyclic ether of general formula (I),
• wherein R1 and R2 are the same or different within (I) and independently denote hydrogen, an aliphatic or heteroaliphatic group, an araliphatic or heteroaraliphatic group, a cycloaliphatic or heterocycloaliphatic group, or an aromatic or heteroaromatic group, and n is 2 or 3;
• (B) at least one cyclic thiocarbonate of general formula (II),
• wherein R3 and R4 are the same or different within (II) and independently denote hydrogen, an aliphatic or heteroaliphatic group, an araliphatic or heteroaraliphatic group, a cycloaliphatic or heterocycloaliphatic group or an aromatic or heteroaromatic group, X and Y denote oxygen or sulfur, and m is 2 to 5;
• (C) at least one amine of general formula (III)
• NR5R6R7 (III)
• wherein R5, R6 and R7 are the same or different within (III) and independently denote hydrogen, an aliphatic or heteroaliphatic group, an araliphatic or heteroaraliphatic group, a cycloaliphatic or heterocycloaliphatic group, an aromatic or heteroaromatic group, or two of R5, R6 or R7 form together a heterocycloaliphatic group, with the proviso that one or two of R5, R6 and R7 denote hydrogen;
• (D) at least one carboxylic acid of general formula (IV),
• R8—COOH (IV)
• wherein R8 denotes an aliphatic or heteroaliphatic group, an araliphatic or heteroaraliphatic group, a cycloaliphatic or heterocycloaliphatic group, or an aromatic or heteroaromatic group;
• and
• whereby instead of or in addition to (A) and (B) a hybrid compound (AB) of general formula (V)
• can optionally comprise part of the curable composition,
• wherein R1, R2, R3, R4, m and n are defined as above and A denotes a bridging group selected from the group consisting of aliphatic and heteroaliphatic groups;
• araliphatic and heteroaraliphatic groups;
• cycloaliphatic and heterocycloaliphatic groups;
• and aromatic and heteroaromatic groups;
• and
• whereby instead of or in addition to (C) and (D) a hybrid compound (CD) of general formula (VI)
• HOOC—B—NR5R6 (VI)
• can optionally comprise part of the curable composition,
• wherein R5 and R6 are as defined above and B denotes a bridging group selected from the group consisting of aliphatic or heteroaliphatic groups;
• araliphatic or heteroaraliphatic groups;
• cycloaliphatic or heterocycloaliphatic groups and aromatic or heteroaromatic groups.