Photochromic compound
US5708063A · kind A · utility
15Cited by
1References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 15, 1996 |
| Grant date | Jan 13, 1998 |
| Priority date | — |
| Expiry date | Feb 15, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/73
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A fulgide or fulgimide compound having a cyclopropyl group as a substituent. The compound has excellent durability which changes reversibly in color from a colorless form to a colored form by the action of light containing ultraviolet rays such as sunlight or the light from a mercury lamp. There are also provided processes for its production, a composition comprising it, and its use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.