Colorant compounds

Details Colorant compounds Colorant compounds

2004-07-23

2010-06-08

Badio, Barbara P (Department: 1628)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

07732625

ABSTRACT:
Rhodamine, thio-rhodamine, acridine, and carbopyronin compounds of the formulawherein M is either (1) a metal ion having a positive charge of +y wherein y is an integer which is at least 2, said metal ion being capable of forming a compound with at least twochromogen moieties, or (2) a metal-containing moiety capable of forming a compound with at least two chromogen moieties, z is an integer representing the number of chromogen moieties associated with the metal and is at least 2, R1, R2, R3, R4, R5, R6, R7, a, b, c, d, Y, and z are as defined herein, Q−is a COO−group or a SO3−group, A is an organic anion, and CA is either a hydrogen atom or a cation associated with all but one of the Q−groups.

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