Photochromic composition and method producing photochromic cured product
US5621017A · kind A · utility
120Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1995 |
| Grant date | Apr 15, 1997 |
| Priority date | — |
| Expiry date | Apr 25, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/685
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photochromic composition which can be polymerized and cured upon irradiation with active energy rays such as ultraviolet rays to exhibit favorable photochromic property. The photochromic composition comprises 100 parts by weight of a radical polymerizable monomer, 0.001 to 0.2 parts by weight of a photochromic compound, and 0.01 to 1 part by weight of a photo polymerization 1.0 initiator. A photochromic cured product is obtained by irradiating the photochromic composition with the light which contains ultraviolet rays.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.