NOVEL FLUORINATED DYE STABILIZERS IN FLUORINATED DIELECTRIC SOLVENT

摘要

The present invention is directed to novel fluorinated dye stabilizers having both high quenching efficiency and solubility in halogenated solvents. These dye stabilizers have shown a significantly effect on improving the dye fastness in hostile photooxidation conditions. Formula (I), wherein M is a metal ion, n is 2 or 3; formulae (II) and (III), wherein M' is absent or a metal ion; formulae (IV), (V), (VI) and (VII), wherein M is a metal ion; n is 2 or 3; at least one of R<1 >and R<2> is Rf-A-; A in Rf-A- is absent, oxygen or an alkylene chain; and Rf is a fluorinated alkyl or aryl or a low/medium molecular weight fluorinated polymeric or oligomeric moiety.