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US 7,355,044 B2Granted
Self-assembling dyes
AssigneeAgfa-Gevaert
InventorsLuc Vanmaele, Johan Loccufier, Egbert Meijer, Henricus Janssen, Pieter Fransen
Life of this patent
Estimating the term…
Abstract
A novel dye according to formula (I): capable of self-assembling thus forming supra-molecular structures. These self-assembling dyes may be advantageously used in an ink-jet ink for improving the stability of ink-jet ink images to light fading.
Claims7
A self-assembling dye according to
- wherein
- Linker represents any linking group containing at least one carbon, nitrogen, silicon, phosphorous, sulfur or oxygen atom;
- CU means any chromophore group with an absorption maximum between 200 nm and 2000 nm
- n and o are the same or different and are integers having a value of at least 1;
- m can be zero or any integer having a value of at least 1;
- R1 and R2 are the same or different and represent hydrogen, a halogen, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted thioalkoxy group, a substituted or unsubstituted sulphoxy group, a substituted or unsubstituted suiphone group, a substituted or unsubstituted amino group, a nitrile group, a substituted or unsubstituted, saturated or unsaturated alkyl group, a substituted or unsubstituted acyl group, a substituted or unsubstituted sulphonyl group, a substituted or unsubstituted phosphoryl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aralkyl group, a heterocyclic group, a chromophore group, wherein said chromophore group CU is a dye selected from the group consisting of an azo dye with a molar extinction coefficient larger than 103 l.mol−1cm−1, an anthraquinone dye, a (poly)methine dye, an azomethine dye, a disazo dye, a carbonium dye, a styryl dye, a stilbene dye, a phthalocyanine dye, a coumarin dye, an aryl-carbonium dye, a nitro dye, a naphtholactam dye, a dioxazine dye, a flavin dye and a formazan dye;
- and
- wherein said Linker is selected from the group consisting of a substituted or unsubstituted, saturated or unsaturated aliphatic group, a substituted or unsubstituted alicyclic hydrocarbon group, a substituted or unsubstituted aromatic group and a substituted or unsubstituted heteroaromatic group.
5 more elements
A self-assembling dye selected from the group consisting of
Dependencies are inferred from the claim text.