Trisazo dyes for inks for ink jet printing
AssigneeFujifilm Imaging Colorants Limited
InventorDavid Devonald
Life of this patent
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Abstract
A process for printing an image on a substrate comprising 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 L2are 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).
Claims23
A process for printing an image on a substrate comprising 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.
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;
- 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 optionally in the form of a metal chelate;
- (ii) L1 and L2 are each independently optionally substituted phenylene or naphthylene;
- (iii) optional substituents present on L1 and L2 are selected from OH, SO3H, CN, carbonamido, PO3H2, CO2H, NO2, NH2, optionally substituted alkyl, optionally substituted alkoxy, optionally substituted aryl, optionally substituted amine and optionally substituted 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;
- and
- (v) when L1 carries a methoxy group A is not 1,3-diaminophenyl.
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Dependencies are inferred from the claim text.