Dimethylamino derivatives and their use

Claim 1

A curable mixture containing (a) a polyepoxide compound which contains on average more than one epoxy group in the molecule and (b) a curing agent which is a dimethylamino derivative of the formula I ##STR47## wherein X is 1,3-propylene or ethylene or alkyl-substituted ethylene, and R is the radical of the formulae ##STR48## OR 4 (VII) or OR 11 OXN(CH 3 ) 2 (XI), wherein R 1 is alkyl, cycloalkyl, or aryl or aralkyl which is unsubstituted or substituted by halogen or C 1 -C 4 alkyl, Y is a direct bond, alkylene, alkenylene, cycloalkylene or arylene, R 2 is a hydrogen atom or has the meaning of R 3 , and R 3 is alkyl, cycloalkyl, or aryl or aralkyl which is unsubstituted or substituted by C 1 -C 4 alkyl or halogen, R 4 is alkyl, alkenyl, cycloalkyl, cycloalkylalkylene, or aryl or aralkyl which is unsubstituted or substituted by C 1 -C 4 alkyl or halogen, or is ##STR49## wherein R 5 is a hydrogen atom or methyl and Z is CN, CH 2 NH 2 or CH 2 N(CH 3 ) 2 , and R 11 is alkylene, cycloalkylene or arylene, and X is additionally neopentylene if R is the radical OR 4 , or X is ethylene, 1,3-propylene or 1,3-propylene which is substituted in the 1- or 2-position by methyl, and R is the radical of the formulae ##STR50## wherein each or X and Y independently is as defined above, n is 0 or 1, R 6 is a hydrogen atom, alkyl, cycloalkyl, β-cyanoethyl or β-cyanoethyl which is substituted in the 1- or -2 position by methyl, R 7 is alkyl, alkenyl, cyclalkyl, aryl, aralkyl, alkaryl or alkaralkyl, each of R 8 and R 10 is a hydrogen atom and R 9 is alkyl, cycloalkyl, aryl, aralkyl, alkaryl, alkaralkyl, 3-(dimethylamino) propyl, or each of R 8 and R 9 independently is C 1 -C 4 alkyl or phenyl and R 10 is a hydrogen atom or R 8 is a hydrogen atom, R 9 is alkyl, cycloalkyl, aryl, aralkyl, alkaryl or aralkaryl, and R 10 is β-cyanoethyl or β-cyanoethyl which is substituted in the 1- or 2-position by methyl.