| abstract |
The use of 1,3-substituted imidazolium salts of the formula I n n n n n n n n n n in whichn R 1 and R 3 independently of one another are an organic radical having 1 to 20 C atoms, R 2 , R 4 , and R 5 independently of one another are an H atom or an organic radical having 1 to 20 C atoms, it also being possible for R 4 and R 5 together to form an aliphatic or aromatic ring, X is an anion having a pK b of less than 13 (measured at 25° C., 1 bar in water or dimethyl sulfoxide), and n is 1, 2 or 3, with the exception as imidazolium salts of 1-ethyl-2,3-dimethylimidazolium acetate and 1-ethyl-2,3-dimethylimidazolium acetate-acetic acid complex, as latent catalysts for curing compositions comprising epoxy compounds. |