| abstract |
The known reaction of dichlorotriazines of the formula II ##STR1## in which Q is an ether or amino radical, with diamines of the formula III n n Pip--NH--R--NH--Pip (III) n n in which Pip is a radical of the formula ##STR2## in which R 1 is hydrogen, C 1 -C 12 -alkyl, C 3 -C 8 -alkenyl, C 7 -C 11 -phenylalkyl, C 2 -C 8 -alkanoyl or C 3 -C 5 -alkenoyl and R is a divalent organic radical leads to undesirable, sparingly soluble by-products. The formation of these by-products can be suppressed if the reaction is carried out in a water-immiscible organic solvent with the addition of an aqueous base--preferably NaOH or KOH--under pressure at 140°-220° C. |