Optical recording medium
US4913948A · kind A · utility
6Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1988 |
| Grant date | Apr 3, 1990 |
| Priority date | — |
| Expiry date | Sep 26, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/146
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
The invention provides an optical recording medium comprising a Langmuir-dgett film made from a mixture of a photochromic compound of the following formula, in which a carboxyl group and an alkyl group have been introduced to the 8-position and the 1'-position, respectively, at the same time, and a long-chain carboxylic acid: ##STR1## wherein R represents a hydrocarbon having 5 to 31 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.