Phthalocyanines and their use in ink-jet printing
US7575627B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 2, 2005 |
| Grant date | Aug 18, 2009 |
| Priority date | — |
| Expiry date | Apr 27, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24934
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A mixture of dyes of Formula (1) and salts thereof; wherein M is 2H, Si, a metal, an oxymetal group, a hydroxymetal group or a halometal group; Pc represents a phthalocyanine nucleus of formula (2); R1 is methyl; R2 is H or methyl; R3 and R4 independently are H or optionally substituted C1-4alkyl; L is a divalent linking group; A and B are independently H or a substituent. x is 0.1 to 3.8; y is 0.1 to 3.8; z is 0.1 to 3.8; the sum of (x+y+z) is 2 to 4; and the substituents, represented by x, y and z, are only attached to a β position on the phthalocyanine ring and the dyes are free from fiber reactive groups. Also compositions, inks, printed material and in-jet processes and cartridges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.