Alicyclic compound for optical material
US7301705B2 · kind B2 · utility
16Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2002 |
| Grant date | Nov 27, 2007 |
| Priority date | — |
| Expiry date | Jun 1, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The alicyclic compound of the present invention has a five- or more membered ring structure having an epithioethylene linkage and/or an epidithioethylene linkage, and has tow or more sulfur atoms in its molecule. Optical materials produced by curing the alicyclic compound or a composition containing the alicyclic compound by polymerization show high refractive index.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.