Inkjet ink comprising metal-cyanine dye with improved water-solubility

US7737271B2 · kind B2 · utility

Assignee

• Silverbrook Research Pty Ltd · AU

Inventors

• Simone Charlotte Vonwiller · Forbes, AU
• Scott Matthew Starling · Sydney, AU
• Damon Donald Ridley · Sydney, AU
• Lachlan Everett Hall · Sydney, AU
• Simon Fielder · Sydney, AU
• Maxine Sintic · Sydney, AU
• Sutharsiny Indusegaram · Sydney, AU
• Kia Silverbrook · Sydney, AU
• Paul Lapstun · Sydney, AU

Key dates

• Filing date: Oct 12, 2008
• Grant date: Jun 15, 2010
• Expiry date: Oct 12, 2028

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31993
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

An inkjet ink comprising an IR-absorbing dye. The dye is a metal-cyanine complex of formula (I):whereinQ1, Q2, Q3 and Q4 are the same or different and are independently selected from a C3-20 arylene group or a C3-20 heteroarylene group;M is selected from Ti(A1)(A2), Zr(A1)(A2), V(A1)(A2), Si(A1)(A2), Ge(A1)(A2), Ga(A1), Al(A1), Mn(A1), Fe(A1), Sn(A1)(A2), or Pb(A1)(A2); andA1 and A2 may be the same or different and are axial ligands of formula (IIIa)wherein:C1 represents a core unit having two or more branching positions;each P1 is independently selected from H, a hydrophilic moiety or a branched moiety;g1 is an integer from 2 to 8;q1 is 0 or an integer from 1 to 6; andeach p1 is independently selected from 0 or an integer from 1 to 6.