Composition for optical material
US7091307B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2001 |
| Grant date | Aug 15, 2006 |
| Priority date | — |
| Expiry date | Apr 1, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/041
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a composition for optical materials, comprising (a) a compound having in one molecule at least one structure represented by the following Formula 1:wherein R1 is a single bond or a C1-10 hydrocarbon group, each of R2, R3 and R4 is a C1-10 hydrocarbon group or hydrogen, Y is O, 5, Se or Te, m is 1 to 5, and n is 0 to 5; (b) a compound having in one molecule at least one isocyanate group and/or at least one isothiocyanate group; (c) a compound having in one molecule at least one mercapto group; and (d) an inorganic compound having sulfur atom and/or selenium atom, and also relates to an optical material produced by polymerization curing the composition, a production method thereof, and an optical lens comprising the optical material. The present invention provides a high refractive, high Abbe's number optical material having an improved impact resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.