Polychromic substances and their use
US8507178B2 · kind B2 · utility
3Cited by
28References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2009 |
| Grant date | Aug 13, 2013 |
| Priority date | — |
| Expiry date | Dec 15, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/025
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to use of a diacetylene compound as a color former wherein the diacetylene compound has one of general formulae (I) to (V). The invention also includes methods of imparting color to a material including a compound as defined above, which comprises subjecting the material to irradiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.