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US4892584A
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Water soluble infrared absorbing dyes and ink-jet inks containing them
Assignee: Eastman Kodak Co
•
Filing: 1988-12-05
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Granted: 1990-01-09
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Expires: 2008-12-05
Abstract
Abstract Novel metallized azo dyes are useful as infrared absorptive dyes in inks for ink-jet printing.
Inventors
- 👤 Derek D. Chapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:22
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/328; C09B; C09B45/00; C09B45/02; C09B45/14; C09B45/22
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
37 words
A water-soluble, ferrous-chelate, infrared absorptive dye having the structure: ##STR14## wherein n is 1 to 3; Z represents the atoms to complete a nitrogen containing, aromatic heterocyclic group, and R represents at least one water solubilizing group.
Claim 2
Dependent Claim
37 words
A water-soluble, ferrous-chelate, infrared absorptive dye having the structure: ##STR14## wherein n is 1 to 3; Z represents the atoms to complete a nitrogen containing, aromatic heterocyclic group, and R represents at least one water solubilizing group.
Claim 3
Dependent Claim
22 words
A dye of claim 1 wherein Z completes a heterocyclic group selected from the group consisting of pyridyl, pyrazyl, benzothiazolyl and benzodiazolyl.
Claim 4
Dependent Claim
11 words
A dye of claim 1, wherein Z completes a benzodiazolyl group.
Claim 5
Dependent Claim
29 words
A dye of any one of claims 1 through 3 wherein n is 1 and R is sulfo, carboxy, or a group containing a terminal sulfo or carboxy group.
Claim 6
Dependent Claim
11 words
A dye of claim 4 wherein R is a carboxy group.
Claim 7
Dependent Claim
29 words
A dye of any one of claims 1 through 5 wherein the heterocyclic group completed by Z contains an innocuous substituent selected from halogen, lower alkoxy and lower alkyl.
Claim 8
Dependent Claim
23 words
A ferrous complex of a dye selected from those having the following structures: ______________________________________
##STR15##
______________________________________
##STR16##
##STR17##
##STR18##
##STR19##
##STR20##
##STR21##
______________________________________
Claim 9
Dependent Claim
23 words
A ferrous complex of a dye selected from those having the following structures: ______________________________________
##STR15##
______________________________________
##STR16##
##STR17##
##STR18##
##STR19##
##STR20##
##STR21##
______________________________________
Claim 10
Dependent Claim
16 words
An ink jet comprising an aqueous solution of a dye of any one of claims 1-7.
Claim 11
Dependent Claim
16 words
An ink of claim 8 further comprising a water soluble black dye, and a polyalkylene glycol.
Claim 12
Dependent Claim
64 words
An ink of claim 9 comprising the following components: ______________________________________
1-6% by wt. of a dye of claims 1-7
1-4% by wt. of a water soluble black dye
1-3% by wt. of polyethylene glycol
0-1% by wt. of butyl carbitol
0-3% by wt. of N--methyl-2-pyrrolidone
0-0.1% by wt. of
sodium 2-pyridine
thiol-1-oxide
1-2% by wt. of 10 N solution sodium hydroxide
balance water
______________________________________
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-08 | 1993-07-10 | 1994-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-08 | 1997-07-10 | 1998-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-08 | 2001-07-10 | 2002-01-09 | $7700.00 | Window Closed / Lapsed |