Photochromic composition
US5266447A · kind A · utility
35Cited by
12References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 1991 |
| Grant date | Nov 30, 1993 |
| Priority date | — |
| Expiry date | Feb 20, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/163
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed is a photochromic composition comprising an organic photochromic compound and a specific tertiary amine compound which are dissolved or dispersed in a high-molecular compound. Also disclosed are a photochromic film composed of the above photochromic composition and a photochromic laminate having a photochromic layer composed of the above photochromic composition on a surface of a substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.