WATER-BASED DITHIOLENE INFRARED INKJET INKS

摘要

The present invention provides an IR-absorbing dye suitable for formulating a water-based inkjet ink, said dye being of formula (01I) wherein: M is selected from Ni, Pd or Pt; R<10> and R<11> are independently selected from C1-30 hydrocarbyl, or R<10 >and R<11> together are joined to form a C2-30 hydrocarbylene group; R<12> and R<13 >are independently selected from C1-30 hydrocarbyl, or R<12 >and R<13> together are joined to form a C2-30 hydrocarbylene group; wherein at least one of R<10>, R<11>, R<12> or R<13> comprises a hydrophilic group. Dyes of this type are especially suitable for use in netpage and Hyperlabel systems.