Patent ID: 7887920
Filing Date: 2011-02-15
Classification: C07F,Y10S,Y10T

Abstract:
1. A near-infrared ray absorption material comprising a borate which consists of a tetrakis(pentafluorophenyl) anion and a cation, wherein the cation is a cation not having near-infrared ray absorption ability that is selected from the group consisting of: sodium, ammonium, pyridinium, anilinium, imidazolium, pyrrolidinium, quinolinium, and a combination thereof, or the cation is a cation having near-infrared ray absorption ability in the range of greater than 740 nm to 1200 nm that is selected from the group consisting of: a diimmonium cation; a cyanine dye based cation; a cation represented by the formula (2): wherein R with the proviso that when the cation is the cation not having near-infrared ray absorption ability, the near-infrared ray absorption material further comprises a near-infrared ray absorbing dye.