Patent number: 6649335
Abstract: A cyanine dye of formula (II)
wherein
X1 is C(R5, R6), NR7, O, S or Se,
X2 is O, S, Se or NR13,
R2 with R3, or R3 with R4, are the remaining members for the completion of a condensed furano ring system, and the other R2 or R4 radical, is H, a halogen, SH, CN, CF3, alkyl, aryl, heterocyclyl, alkoxy, aryloxy, alkylthio or arylthio,
R10 to R12, are H, a halogen, SH, CN, CF3, alkyl, aryl, heterocyclyl, alkoxy, aryloxy, alkylthio or arylthio, or R10 with R11, or R11 with R12, are the remaining members for the completion of a ring system,
R5 to R7 and R13 are alkyl, alkylene-SO3Z1 or alkylene-CO2Z1,
R8 and R9 are alkyl, alkylene-SO3Z1, alkylene-CO2Z1 or alkylene-Y2—N(Z1)—Y3-alkyl,
Z1 is H or a negative charge,
Y2 and Y3 are —S(═O)2— or —C(═O)—,
M1 is a counterion,
L1, L2 and L3 are a methine group and
n is 0, 1, 2 or 3.
Type:
Grant
Filed:
November 5, 2001
Date of Patent:
November 18, 2003
Assignee:
AGFA-Gevaert
Inventor:
Michael Missfeldt