GALLIUM NAPHTHALOCYANINE SALTS FOR USE AS IMPROVED INFRARED DYES

摘要

There is provided an IR-absorbing naphthalocyanine dye of formula (I): wherein M is Ga(A₁); A₁ is an axial ligand selected from -OH, halogen, -OR₃, -OC(O)R₄ or -O(CH₂CH₂O)_OR₆ wherein e is an integer from 2 to 10 and R₆ ^{is H, C}