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US 7,582,149 B2Granted
Monoazo colorants from pyrazolobenzodiazinedioxides
AssigneeEastman Kodak Company
InventorsSteven G. Link, Joan C. Potenza, Ann L. Carroll-Lee
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AssigneeEastman Kodak Company
InventorsSteven G. Link, Joan C. Potenza, Ann L. Carroll-Lee
Estimating the term…
The invention relates to monoazo colorants derived from pyrazolobenzodiazinedioxides of Formula 1: wherein R1 and R2 are hydrogen or any non-metallic group, n is 0-4, R3 is hydrogen, acyl, aryl, alkenyl, alkynyl or alkyl, A represents an aromatic heterocyclic ring or an aromatic group of Formula 2: wherein R6 and R8 are hydrogen, alkyl, sulfonic acid, or 1-4 carbon alkoxy, R7 is any non-metallic group, m is 0-3, and R6 and R7, R7 and R8, or, when m>1, two R7 groups can be joined to form a fused carbocyclic or heterocyclic aromatic or non-aromatic ring. The invention also relates to an aqueous ink that comprises at least one colorant of Formula 1: wherein A represents an aromatic or heteroaromatic ring, and A can be bonded to other rings that can be aromatic, aliphatic or heterocyclic, and an ink printing method using the colorant-containing ink.
A colorant of Formula 1:
An aqueous inkjet ink that comprises at least one colorant of Formula 1:
An ink printing method for creating an image on an ink compatible substrate comprising:
Dependencies are inferred from the claim text.