Method of making microscopic particles containing imbedded fluorescent dyes
US5229041A · kind A · utility
2Cited by
9References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 21, 1992 |
| Grant date | Jul 20, 1993 |
| Priority date | — |
| Expiry date | Jan 21, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2333/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Microscopic, neutrally buoyant particles containing fluorescing compounds used for tracers of large scale turbulent flows. The particles are generated by dissolving acrylics in a solvent and mixing the solution with fluorescing dyes. This mixture is sprayed into a heated chamber where the solvent evaporates, and the solid acrylic with the imbedded dye settles on the bottom of the chamber. The dust is collected, and the particles are separated according to size using a filter. Dye residue on the particles' surface is washed leaving the dye imbedded within the particles. The particles are then used within flow fields.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.