Dye solution containing hindered solvent functionality
US5804352A · kind A · utility
2Cited by
6References
5Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 14, 1997 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | Oct 14, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/26
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A dye solution comprising a laser recordable dye and a solvent for the dye that has (a) a solvent functional group selected from esters, ketones and ethers; and (b) the solvent functional group has as hindering groups (i) at least one t-butyl group on one side thereof or (ii) two groups on opposite sides thereof selected from the group consisting of isoamyl, t-butyl, isobutyl and isopropyl; provided that both groups cannot be isopropyl and (c) the hindering groups are adjacent to the solvent functional group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.