Photochromic materials having a thin photochromic film and a method for fabricating the same
US5252437A · kind A · utility
3Cited by
4References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 2, 1990 |
| Grant date | Oct 12, 1993 |
| Priority date | — |
| Expiry date | Aug 2, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K9/02
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
A photochromic material having a thin film of an ion complex of a photochromic substance having an anionic group and a cationic surface active agent is described. Since the surface active agent is used, a uniform film with good photochromism can be obtained. A method for fabricating the photochromic material is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.