488711-63-3Relevant articles and documents
INFRARED ABSORBING COMPOUNDS AND THEIR USE IN IMAGEABLE ELEMENTS
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Page 27, (2008/06/13)
Infrared absorbing compounds in which both the anion and the cation absorb infrared radiation, imageable elements that contain these compounds, and methods for forming images using the imageable elements are disclosed. The compounds have the structure (I) and (II) in which Y1 and Y2 are each independently hydrogen, halo, alkyl, diphenylamino, or phenylthio; R1, R2, R3 and R4 are each independently hydrogen, methyl, or SO3-, with the proviso that two fo R1, R2, R3, and R4 are SO3-; R5 and R6 are each independently an alkyl group; Z1, Z2, Z4 and Z5 are each independently a benzo group or a nophtho group; Z3 and Z6 are each independently two hydrogen atoms, a cyclohexene residue, or a cyclopentene residue; X1, X2, X3, and X4 are each independently S, O, NH, CH2, or C(CH3)2; and n1 and n2 are each independently 0 to 4.
