Phase change inks containing colorant compounds
US6835238B1 · kind B1 · utility
8Cited by
23References
148Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2003 |
| Grant date | Dec 28, 2004 |
| Priority date | — |
| Expiry date | Aug 21, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/34
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A phase change ink composition comprising a phase change ink carrier and a colorant compound of the formula wherein M is either (1) a metal ion having a positive charge of +y wherein y is an integer which is at least 2, said metal ion being capable of forming a compound with at least two chromogen moieties, or (2) a metal-containing moiety capable of forming a compound with at least two chromogen moieties, z is an integer representing the number of chromogen moieties associated with the metal and is at least 2, and R1, R2, R3, R4, R5, R6, R7, a, b, c, d, Y, Q−, A, and CA are as defined herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.