Printing process using specified AZO compounds
AssigneeAvecia Limited
InventorsAjay Haridas Popat, Alan Dickinson, Maria Soteri Hadjisoteriou, Neil James Thompson, Paul Wight, Peter Gregory, Roy Bradbury, Philip John Double, Thomas Paul
Life of this patent
Estimating the term…
Abstract
A process for printing an image on a substrate comprising applying thereto a composition comprising a liquid medium and a compound of Formula (1): T-Q-N═N-L-T Formula (1) wherein: each T independently is an azo group; Q is an optionally substituted, optionally metallised 1,8-dihydroxynaphthyl group; and L is a divalent organic linker group. Also claimed are compositions and dyes.
Claims24
A process for printing an image on a substrate comprising applying thereto a composition comprising a liquid medium and a compound of Formula (1):
- T-Q-N═N-L-T Formula (1)
- wherein:
- each T independently is an azo group of the formula A-N═N— wherein each A independently is an optionally substiuted aryl, heteroaryl, non-aromatic heterocyclic or an alkenyl group;
- Q is an optionally substituted, optionally metallised 1,8-dihydroxynaphthyl group of Formula (4);
- L is a divalent organic linker group;
- and wherein each A and L independently carries 1 or 2 substituents, and with the proviso that at least one of the groups represented by T comprises a water-solubilising group.
A composition comprising a liquid medium and a compound of Formula (1):
- T-Q-N═N-L-T Formula (1)
- wherein:
- each T independently is an azo group of the formula A-N═N— wherein each A independently is an optionally substiuted aryl, heteroaryl, non-aromatic heterocyclic or an alkenyl group;
- Q is an optionally substituted, optionally metallised 1,8-dihydroxynaphthyl group of Formula (4);
- L is a divalent organic linker group;
- and wherein each A and L independently carries 1 or 2 substituents, and with the proviso that at least one of the groups represented by T comprises a water-solubilising group.
A process for the preparation of a compound of Formula (1):
- T-Q-N═N-L-T Formula (1)
- wherein:
- each T independently is an azo group of the formula A-N═N— wherein each A independently is an optionally substiuted aryl, heteroaryl, non-aromatic heterocyclic or an alkenyl group;
- Q is an optionally substituted, optionally metallised 1,8-dihydroxynaphthyl group of Formula (4);
- L is a divalent organic linker group;
- and wherein each A and L independently carries 1 or 2 substituents;
- which process comprises diazotising an amine and coupling the resultant diazonium salt with a compound of formula T-Q-N═N-LH, wherein T, L and Q are each independently as defined in Formula (1), and with the proviso that at least one of the groups represented by T comprises a water-solubilising group.
A process for the preparation of Formula (1):
- T-Q-N═N-L-T Formula (1)
- wherein:
- each T independently is an azo group of the formula A-N═N— wherein each A independently is an optionally substiuted aryl, heteroaryl, non-aromatic heterocyclic or an alkenyl group;
- Q is an optionally substituted, optionally metallised 1,8-dihydroxynaphthyl group of Formula (4);
- L is a divalent organic linker group;
- and wherein each A and L independently carries 1 or 2 substituents;
- which comprises the reaction of a compound of formula T-X—N═N-L-T with a strong base thereby forming a compound of Formula (1), wherein each T independently and L are as defined in Formula (1) and X is an optionally substituted 1-hydroxy-8-amino-naphthylene group, and with the proviso that at least one of the groups represented by T comprises a water-solubilising group.
A compound of Formula (1):
- T-Q-N═N-L-T Formula (1)
- wherein:
- each T independently is an azo group of the formula A-N═N— wherein each A independently is an optionally substiuted aryl, heteroaryl, non-aromatic heterocyclic or an alkenyl group;
- Q is an optionally substituted, optionally metallised 1,8-dihydroxynaphthyl group of Formula (4);
- L is a divalent organic linker group;
- and wherein each A and L independently carries 1 or 2 substituents;
- and with the proviso that at least one of the groups represented by T comprises a water-solubilising group.
Dependencies are inferred from the claim text.