Durable fluorescent organic pigments and methods of making
US6533961B2 · kind B2 · utility
48Cited by
55References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2001 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | May 21, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Daylight fluorescent articles are disclosed that utilize durable fluorescent pigment particles resulting from a fluorescent dye incorporated within a matrix polymer selected from polycarbonate, polyester and mixtures thereof and where the particles are of various desired shapes and sizes. Embodiments of such fluorescent pigment particles may also be retroreflective and are especially useful for pavement marking surfaces and retroreflective products for highway transportation safety.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.