Process for fixing photo-induced colored derivatives of spiropyrans and compositions therefor
US4346186A · kind A · utility
2Cited by
4References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1981 |
| Grant date | Aug 24, 1982 |
| Priority date | — |
| Expiry date | Sep 25, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C5/56
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to processes for fixing photo-induced colored derivatives of spiropryans in solvent and solid solutions, and to compositions in which said photo-induced colored derivatives may be fixed, said processes comprising irradiating solvent or solid solutions comprising a spiropryan and an iodonium salt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.