White fluorescent blended dye for leak detection
US9011716B1 · kind B1 · utility
5Cited by
8References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 15, 2010 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Oct 15, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S252/964
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a white-fluorescing dye blend comprising at least one neutral blending oil, a perylene-based compound, naphthalimide-based compound, and a coumarin-based compound. This white-fluorescing dye blend has a substantial fluorescent response to illumination by the entire range of commonly available inspection lamps. The resultant blended dye is an all-purpose blend that is satisfactory for all automotive fluids and all inspection lamps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.