Patent ID: 7166564

Claim:
A compound of formula (1), (2) or (3) wherein M is hydrogen, an alkali metal ion or an ammonium ion, A 1 is —OR 1 , —NHR 1 , N-morpholinyl or 1-piperidyl, A 2 is —OR 2 , —NHR 2 , N-morpholinyl or 1-piperidyl, E 1 , E 2 , E 3 and E 4 are each independently of the others —O—, —NH— or —NR 9 —, wherein R 9 together with R 4 , R 6 , R 2 or R 12 forms an ethylene radical, R 1 to R 6 , R 11 and R 12 are each independently of the others hydrogen, alkyl, alkoxy, aryl, aralkyl, alkoxyalkyl, hydroxyalkyl, aminoalkyl or a group of the formula —(C n H 2n Y) m —R 7 , wherein Y is —O—, —NH—, —NR 8 —, —CONH— or —CONR 8 —, R 7 is hydrogen, alkyl or aryl and R 8 is alkyl or aryl, n is a number from 2 to 6 and m is a number from 1 to 10, or pairs of two radicals R 1 and R 2 , R 3 and R 4 , R 5 and R 6 or R 11 and R 12 together form a bivalent radical of the formula —CH 2 CH 2 OCH 2 CH 2 — or, when E 1 , E 2 , E 3 or E 4 is —NR 9 —, R 4 , R 6 , R 2 or R 12 together with R 9 forms an ethylene radical, R 10 , R 13 , R 14 and R 15 are each independently of the others alkyl, alkenyl, aryl or aralkyl, X 1 and X 2 are each independently of the other 1,2-cyclohexanediyl, a group of the formula —(C n H 2n ) m — or a group of the formula —(C n H 2n Y) m —, wherein Y is —O—, —NH—, —NR 8 —, —CONH— or —CONR 8 — and R 8 is alkyl or aryl, n is a number from 2 to 6 and m is a number from 1 to 10, Y 1 and Y 2 are each independently of the other 1,2-cyclohexanediyl, a group of the formula —(C n H 2n ) m — or a group of the formula —(C n H 2n Y) m —, wherein Y is —O—, —NH—, —NR 8 —, —CONH— or —CONR 8 — and R 8 is alkyl or aryl, n is a number from 2 to 6 and m is a number from 1 to 10 and A − is a singly charged anion or the two A − form a doubly charged anion, R 16 , R 17 , R 18 and R 19 are each independently of the others hydrogen, 2-hydroxyethyl, 2-aminoethyl or 3-aminopropyl, R 20 , R 21 , R 22 and R 23 are each independently of the others alkyl, and A 3 and A 4 are 2-hydroxyethylamino, 3-dimethylaminopropylamino or 3-diethylaminopropylamino.