Method of modulating stability of sulfonated dye
First Claim
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1. A method of modulating a stability of a sulfonated phthalocyanine dye, said method comprising providing a salt of said phthalocyanine dye, wherein said salt comprises at least one phosphazene cation, and wherein said phosphazene cation is of formula (C):
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Abstract
A method of modulating a stability of a sulfonated dye, particularly its ozonefastness is provided. The method comprises providing a salt of the dye, wherein the salt comprises at least one organic cation selected from the group consisting of:
- a first organic cation having a positive charge delocalized between a nitrogen atom and at least one other heteroatom;
- a second organic cation having a positive charge delocalized between a nitrogen atom and at least two other atoms; and
- a third organic cation of formula (A):
wherein:
- Rp, Rq and Rr are each independently selected from a C1-6 alkyl group;
- s is 0, 1, 2 or 3; and
- Ar is a C6-12 aryl group or C3-12 heteroaryl group.
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Citations
9 Claims
- 1. A method of modulating a stability of a sulfonated phthalocyanine dye, said method comprising providing a salt of said phthalocyanine dye, wherein said salt comprises at least one phosphazene cation, and wherein said phosphazene cation is of formula (C):
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