申请人:Silverbrook Research Pty Ltd
公开号:US08038737B2
公开(公告)日:2011-10-18
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.
提供了一种调节磺化染料稳定性,特别是其耐臭氧性的方法。该方法包括提供染料的盐,其中该盐包含选自以下群组的至少一种有机阳离子:第一种有机阳离子,其正电荷在氮原子和至少另一种杂原子之间共享;第二种有机阳离子,其正电荷在氮原子和至少两种其他原子之间共享;以及式(A)的第三种有机阳离子:其中:Rp、Rq和Rr各自独立地选自C1-6烷基;s为0、1、2或3;Ar为C6-12芳基或C3-12杂芳基。