Trisazo dyes for inks for ink jet printing
AssigneeFujifilm Imaging Colorants Limited
InventorDavid Phillip Devonald
Life of this patent
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Abstract
A process for printing an image on a substrate including applying thereto a composition comprising a liquid medium and a tris-azo compound of Formula (1) or salt thereof: wherein: A is an optionally substituted alkenyl, homocyclic or heterocyclic group; L1 and L2 are each independently optionally substituted aryl or heteroaryl; and m and n are each independently 0 or 1 such that m+n is 1 or 2; wherein: (i) the compound of Formula (1) is optionally in the form of a metal chelate; and (ii) at least one of L1 and L2 carries at least one substituent selected from sulpho, carboxy, C1-4-alkoxy and C1-4-alkoxy-OH. Also claimed are compositions and compounds comprising Formula (1).
Claims18
A process for printing an image on a substrate comprising applying thereto by means of an ink-jet printer a composition comprising a liquid medium and a tris-azo compound of Formula (1) or salt thereof:
- wherein:
- A is an alkenyl, homocyclic or heterocyclic group;
- L1 and L2 are each independently aryl or heteroaryl;
- and
- m and n are each independently 0 or 1 such that m+n is 1 or 2;
- wherein:
- (i) the compound of Formula (1) is not in the form of a metal chelate;
- and
- (ii) at least one of L1 and L2 carries at least one substituent selected from sulpho, carboxy, C1-4-alkoxy and C1-4-alkoxy-OH.
A tris-azo compound of Formula (1) or salt thereof:
- wherein:
- A is an optionally substituted pyridonyl group;
- m and n are each independently 0 or 1 such that m+n is 1 or 2;
- and with the provisos that:
- (i) the compound of Formula (1) is not in the form of a metal chelate;
- (ii) L1 and L2 are each independently optionally substituted phenylene or naphthylene;
- (iii) the optional substituents present on L1 and L2 are selected from OH, SO3H, CN, carbonamido, PO3H2, CO2H, NO2, NH2, alkyl, alkoxy, aryl, amine and acylamine;
- (iv) at least one of L1 and L2 carries at least one substituent selected from sulpho, carboxy, C1-4-alkoxy and C1-4-alkoxy-OH;
- (v) when L1 carries a methoxy group A is not 1,3-diaminophenyl;
- and
- (vi) L1 and L2 each independently carries 0 to 3 substituents such that at least one of L1 and L2 carries at least one substituent selected from the group consisting of sulpho and carboxy.
Dependencies are inferred from the claim text.