Polymer particle containing fluorescent molecule and method for producing the same
US9494580B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2009 |
| Grant date | Nov 15, 2016 |
| Priority date | — |
| Expiry date | Oct 24, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2458/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Polymer particles are provided which contain fluorescent molecules with high presence ratio in a polymer layer thereof and a method for preparing thereof. Polymer particles are swelled in a non-aqueous solution excluding exclusively water preferably promotes selling of the polymer layer and transfer of the fluorescent molecules to the polymer layer could not protected by water molecules such that much more fluorescent molecule may be introduced into inside of the polymer layer. Furthermore, since the water is added to the reaction system prior to evaporation removal of the non-aqueous solvent, dry-up of the polymer particles is prevented by the water remained in the reaction system and the polymer particles including fluorescent molecules with high presence ratio of the fluorescent molecules preferably keep high dispersibility using the above described procedures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.