Metal complex for ink jet ink

• US 6,001,161 A
• Filed: 12/01/1998
• Issued: 12/14/1999
• Est. Priority Date: 12/01/1998
• Status: Expired due to Term

• Current Assignee: Eastman Kodak Company
• Original Assignee: Eastman Kodak Company
• Inventors: Weber, Helmut, Evans, Steven
• Primary Examiner(s): KLEMANSKI, HELENE G
• Application Number:
  US09/203,254
• Time in Patent Office: 378 Days
• Field of Search: 106/31.48, 106/31.58
• US Class Current: 106/31.48
• CPC Class Codes: C09D 11/328 characterised by dyes

Abstract

An ink jet ink composition comprising water, a humectant, and a polyvalent transition metal complex of 8-heterocyclylazo-5-hydroxyquinoline.

Claims

1. An ink jet ink composition comprising water, a humectant, and a polyvalent transition metal complex of an 8-heterocyclylazo-5-hydroxyquinoline.

2. The composition of claim 1 wherein said complex has the following structure:

##STR12## wherein;

M represents a polyvalent transition metal ion;

each L independently represents a neutral or anionic ligand;

each X, Y and Z independently represents a substituted or unsubstituted alkyl group of 1-6 carbon atoms, a substituted or unsubstituted aryl group of 6-10 carbon atoms, a substituted or unsubstituted hetaryl group of 5-10 atoms, halogen, cyano, nitro, a substituted or unsubstituted alkoxycarbonyl group of 1-6 carbon atoms, a substituted or unsubstituted alkoxy group of 1-6 carbon atoms, hydroxy, a polyoxyalkylene group of 2-20 alkylene oxide residues, carboxy or a salt thereof, sulfo or a salt thereof, phospho or a salt thereof, carbamoyl, a substituted or unsubstituted alkyl-, aralkyl-, aryl-, diaryl- or dialkyl-carbamoyl group of 1-20 carbon atoms, sulfamoyl, a substituted or unsubstituted alkyl-, aralkyl-, aryl-, diaryl- or dialkyl-sulfamoyl group of 1-20 carbon atoms, acylamino, sulfonylamino, amino, a substituted or unsubstituted alkyl-, aralkyl-, aryl-, diaryl- or dialkyl-amino group of 1-20 carbon atoms or a quaternary ammonium or phosphonium group;

Q represents the atoms necessary to complete a 5- or 6-membered heterocyclic ring;

n represents 2 or 3;

m represents an integer from 1-3;

each p and r independently represents an integer from 0-3;

q represents 0, 1 or 2;

two or more of L may be joined together to form a bi- or tridentate ligand which may optionally comprise another polydentate molecule of the same or different structure as shown above;

one or more of L may be combined with X and/or Z;

one or more of X, Y and Z, together with the carbon to which they are attached, may independently represent a ring nitrogen; and

any two of X, Y or Z may be joined together to form a 5-7 membered saturated or unsaturated ring.

3. The composition of claim 2 wherein M is Ni²⁺.

4. The composition of claim 2 wherein L_m comprises an 8-heterocyclylazo-5-hydroxyquinoline.

5. The composition of claim 1 wherein said composition also contains a water-miscible organic solvent.

6. The composition of claim 2 wherein X is chloro, methyl, alkoxy or carboxy.

7. The composition of claim 2 wherein Y is hydrogen.

8. The composition of claim 2 wherein Z is hydrogen or alkylsulfamoyl.

9. The composition of claim 2 wherein Q represents the atoms necessary to complete a pyridine ring.

10. The composition of claim 1 wherein said humectant is diethylene glycol, glycerol or diethylene glycol monobutylether.

11. The composition of claim 1 wherein said metal complex comprises about 0.05 to about 5% by weight of said ink jet ink composition.