Phthalocyanine compounds used in inks
View Patent ↗Ink comprising a compound of Formula (1) and salts thereof: Formula (1) wherein: Pc represents a phthalocyanine nucleus of Formula (2); Formula (2) x is greater than 0 and less than 1.8; y and z are both greater than 0; and the sum of (x+y+z) is 2.4 to 4.5: and a liquid medium. Also an ink-jet printing process, a material printed with an ink of the invention and an ink jet printing cartridge containing an ink of the invention
1. An ink comprising a compound of Formula (1) and salts thereof:
wherein:
Pc represents a phthalocyanine nucleus of Formula (2);
x is greater than 0.05 and less than 1.0;
y and z are both greater than 0; and
the sum of (x+y+z) is 2.4 to 4.5: and
a liquid medium.
2. An ink comprising:
(a) a compound of Formula (1) and salts thereof:
wherein:
Pc represents a phthalocyanine nucleus of Formula (2);
x is greater than 0.05 and less than 1;
y and z are both greater than 0; and
the sum of (x+y+z) is 2.4 to 4.5: and
(b) a liquid medium which comprises a mixture of water and organic solvent or organic solvent free from water.
3. An ink according to claim 2 wherein x is greater than 0.05 and less than 0.5.
4. An ink according to either claim 1 or claim 2 wherein y+z is in the range of from 2.4 to 4.2.
5. A process for forming an image on a substrate comprising applying an ink, according to either claim 1 or claim 2 , thereto by means of an ink-jet printer.
6. A paper, plastic, textile, metal or glass material printed with an ink according to either claim 1 or claim 2 .
7. An ink-jet printer cartridge comprising a chamber and an ink wherein the ink is in the chamber and the ink is as defined in either claim 1 or claim 2 .