Infrared absorbing compounds and their use in imageable elements
US6790590B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2003 |
| Grant date | Sep 14, 2004 |
| Priority date | — |
| Expiry date | Mar 23, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/165
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Infrared absorbing compounds in which both the anion and the cation absorb infrared radiation, imageable elements that contain these compounds, and methods for forming images using the imageable elements are disclosed. The compounds have the structure: in which Y1 and Y2 are each independently hydrogen, halo, alkyl, diphenylamino, or phenylthio; R1, R2, R3, and R4 are each independently hydrogen, methyl, or SO3−, with the proviso that two of R1, R2, R3, and R4 are SO3−; R5 and R6 are each independently an alkyl group; Z1, Z2, Z4, and Z5 are each independently a benzo group or a naphtho group; Z3 and Z6 are each independently two hydrogen atoms, a cyclohexene residue, or a cyclopentene residue; X1, X2, X3, and X4 are each independently S, O, NH, CH2, or C(CH3)2; and n1 and n2 are each independently 0 to 4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.