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- Patents > 2007-02-15 > SECTION C CHEMISTRY; METALLURGY > DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR > COATING COMPOSITIONS, e.g. PAINTS, VARNISHES, LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
Inkjet ink comprising gallium naphthalocyanine dye
There is provided an inkjet ink comprising an IR-absorbing dye of formula (I): wherein M is Ga(A1); A1 is an axial ligand selected from -OH, halogen, -OR3, -OC(O)R4, a hydrophilic ligand and/or a ligand suitable for reducing cofacial interactions; R1 and R2 may be the same or different and are selected from hydrogen or C1-12 alkoxy; R3 is selected from C1-12 alkyl, C5-12 aryl, C5-12 arylalkyl or Si(Rx)(Ry)(Rz); and R4 is selected from C1-12 alkyl, C5-12 aryl or C5-12 arylalkyl Rx, Ry and Rz may be the same or different and are selected from C1-12 alkyl, C5-12 aryl, C5-12 arylalkyl, C1-12 alkoxy, C5-12 aryloxy or C5-12 arylalkoxy; W is a hydrophilic group, each W group being independently selected from a substituent comprising a sulfonic acid group (including salts thereof), or a substituent comprising a sulfonamide group; n1 is 0, 1, 2 or 3; n2 is 0, 2, or 3; n3 is 0, 1, 2 or 3; n4 is 0, 1, 2 or 3; provided that at least one of n1, n2, n3 or n4 is greater than 0. Such inks are suitable for use in netpage, Hyperlabel and other applications.
Filed on: 2006-10-20; Application Number: 11583942
Simone Charlotte Vonwiller
Damon Donald Ridley
Scott Matthew Starling
Lachlan Everett Hall