Catalyst composition for curing resins containing epoxy groups

A catalyst composition for curing a resin containing epoxy groups comprising:

• (i) at least one ionic compound of formula (I)
• where
• X is any anion;
• is a single or double bond;
• n is 1, 2 or 3;
• and R groups are:
• R1 and R3 are in each case selected independently of one another from the group consisting of a linear or branched alkyl having 1 to 20 carbon atoms;
• a linear or branched alkenyl having 3 to 20 carbon atoms;
• and a substituted or unsubstituted aryl having 5 to 20 carbon atoms;
• R2 is hydrogen;
• R4 and R5 are in each case selected independently of one another from the group consisting of hydrogen, a linear or branched alkyl having 1 to 20 carbon atoms;
• a linear or branched alkenyl having 3 to 20 carbon atoms;
• a linear or branched alkoxy having 1 to 20 carbon atoms;
• and a substituted or unsubstituted aryl having 5 to 10 carbon atoms;
• or
• R1 and R5 and/or R3 and R4 or R4 and R5, together with the carbon or nitrogen atoms to which they are bonded, form a 5-6 membered substituted or unsubstituted cycloalkyl-, cycloheteroalkyl-, aryl- or heteroaryl ring, wherein the cycloheteroalkyl- or heteroaryl ring contains 1 to 3 heteroatoms selected from O, N and S;
• and
• (ii) at least one base.