Patent ID: 7138391
Filing Date: 2006-11-21
Classification: C09B,C09D

Abstract:
1. A water-dispersible IR-absorbing dye for a water-based inkjet ink, said dye being of formula (I) or (II): wherein Q 1 , Q 2 , Q 3 and Q 4 are selected from a heteroarylene group of the formula: wherein R 1 and R 2 may be the same or different and are selected from hydrogen, hydroxyl or C 1-12 alkoxy; T is selected from a substituent comprising a polymeric chain or a C 1-30 hydrocarbyl group; W is a hydrophilic group; E is selected from —OH, —O − , C 1-6 alkyl, carboxy-C 1-6 alkyl, sulfo-C 1-6 alkyl, C 1-6 alkoxy, C 5-12 arylalkyl, C 1-6 alkylcarbonyl, C 5-12 arylalkylcarbonyl, C 1-6 alkoxycarbonyl or C 5-12 arylalkoxycarbonyl; m is 0, 1 or 2; n is 0, 1 or 2; p is 0, 1 or 2; M is selected from Si(A 1 )(A 2 ), Ge(A 1 )(A 2 ), Ga(A 1 ), Mg, Al(A 1 ), TiO, Ti(A 1 )(A 2 ), ZrO Zr(A 1 )(A 2 ), VO, V(A 1 )(A 2 ), Mn, Mn(A 1 ), Fe, Fe(A 1 ), Co, Ni, Cu, Zn, Sn, Sn(A 1 )(A 2 ), Pb, Pb(A 1 )(A 2 ), Pd and Pt; A 1 and A 2 are axial ligands, which may be the same or different, and are selected from —OH, halogen or —OR 3 ; R 3 is a selected from C 1-12 alkyl C 5-12 aryl, C 5-12 arylalkyl or Si(R x )(R y )(R z ); and R x , R y and R z may be the same or different and are selected from C 1-12 alkyl, C 5-12 aryl, C 5-12 arylalkyl, C 1-2 alkoxy, C 5-12 aryloxy or C 5-12 arylalkoxy.