Appeal No. 94-4495
Application 07/865,165
wherein A and A each individually represent unsubstituted or alkylsubstitute d1 2
methine; L represents 4 to about 20 atoms and includes at least two alkylenes and at
least one carbonyloxy or carbonylamino, and cov alently links the two dye compounds
so they are nonconjugated; Z , Z , and Z each represent non-metallic atoms which1 2 3
complete a substituted or unsubstituted 5- or 6- membered heterocylic ring; R and
3
R each individually represents an alkyl of 1 to about 10 carbon atoms, or an aryl ,
4
aralkyl, or cycloalkyl of 5 to about 12 carbon atoms, or, joined with R , R , R , R ,5 6 7 8
or Q , represents L; R , R , R , and R each individually represents an alkyl of 1 to3 5 6 7 8
about 10 carbon atoms, or an aryl, aralkyl, or cycloalkyl of 5 to about 12 carbo n
atoms, or, joined with R , R , Q , or Q , represents L; Q and Q each individually3 4 1 2 1 2
represents hydrogen, or an alkyl of 1 to ab out 10 carbon atoms, or an aryl, aralkyl, or
cycloalkyl of 5 to about 12 carbon atoms, or, joined with R , R , R , R , or Q ,5 6 7 8 3
represents L; Q represents hydrogen, or an alkyl of 1 to about 10 carbon atoms, or
3
an aryl, aralkyl, or cycloalkyl of 5 to about 12 carbon atoms, or, joined with R R ,3 4
Q , or Q , represents L; Y represents a carbonyl, sulfonyl or an amino; X& represents1 2
an anion and n represents an integer of 1 or more, provided that when the formul a
forms a zwitterionic dye, n is 0; X represents a carbon atom or hetero atom N, O, S,
2
Se, or Te; and v and w individually represent integrer numbers from 0 to 3.
The Prior Art
3
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Last modified: November 3, 2007