Method of stabilizing dye solutions and stabilized dye compositions
US6524350B2 · kind B2 · utility
10Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 17, 2001 |
| Grant date | Feb 25, 2003 |
| Priority date | — |
| Expiry date | May 25, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N31/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Stabilized metachromatic dyes, especially at application concentrations, comprising metachromatic dyes dissolved in one or more non-aqueous solvents, as well as metachromatic dyes dissolved in pH stabilized aqueous solutions. Also, various combinations of treatments are disclosed for stabilizing metachromatic dyes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.