Trisazo-dyes with a pyrazolyl end group and their use in ink-jet printing
AssigneeFujifilm Imaging Colorants Limited
InventorDavid Phillip Devonald
Life of this patent
Estimating the term…
Abstract
A compound of Formula (1) or a salt thereof: A-N═N-D-N═N—B—N═N-A/ Formula (1) wherein A is an optionally substituted aryl, heteroaryl, non-aromatic heterocyclic or alkenyl group; D is an optionally substituted, optionally metallized 1,8-dihydroxynaphthalene group; B is an optionally substituted organic linking group; and A/ is an optionally substituted pyrazolyl group which does not have an aromatic group as a substituent directly attached to either of the nitrogen atoms of the pyrazolyl ring. Also provided are compositions, inks, ink sets, substrates and cartridges all containing the compound or salt and printing processes using the compound or salt. The compounds and salts are especially useful for ink-jet printing.
Claims23
A compound of Formula (1) or a salt thereof:
- A-N═N-D-N═N—B—N═N-A/ Formula (1)
- wherein
- A is an optionally substituted aryl, heteroaryl, non-aromatic heterocyclic or alkenyl group;
- D is an optionally substituted, optionally metallised 1,8-dihydroxynaphthalene group;
- B is an optionally substituted organic linking group;
- and
- A/ is an optionally substituted pyrazolyl group which does not have an aromatic group as a substituent directly attached to either of the nitrogen atoms of the pyrazolyl ring.
A composition, which comprises:
- (a) from 0.01 to 30 parts of a compound of Formula (1) or salt thereof:
- A-N═N-D-N═N—B—N═N-A/ Formula (1)
- wherein
- A is an optionally substituted aryl, heteroaryl, non-aromatic heterocyclic or alkenyl group;
- D is an optionally substituted, optionally metallised 1,8-dihydroxynaphthalene group;
- B is an optionally substituted organic linking group;
- and
- A/ is an optionally substituted pyrazolyl group which does not have an aromatic group as a substituent directly attached to either of the nitrogen atoms of the pyrazolyl ring;
- and
- (b) from 70 to 99.99 parts of a liquid medium or a low melting point solid medium;
- wherein all pads are by weight and the number of parts of (a)+(b)=100.
A process for printing an image on a substrate comprising applying thereto a composition comprising a liquid medium and a compound of Formula (1) or a salt thereof:
- A-N═N-D-N═N—B—N═N-A/ Formula (1)
- wherein
- A is an optionally substituted aryl, heteroaryl, non-aromatic heterocyclic or alkenyl group;
- D is an optionally substituted, optionally metallised 1,8-dihydroxynaphthalene group;
- B is an optionally substituted organic linking group;
- and
- A/ is an optionally substituted pyrazolyl group which does not have an aromatic group as a substituent directly attached to either of the nitrogen atoms of the pyrazolyl ring.
Dependencies are inferred from the claim text.