Polysulfide-based resin composition, polysulfide-based resin, and optical material comprising the resin
US5955206A · kind A · utility
16Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1996 |
| Grant date | Sep 21, 1999 |
| Priority date | — |
| Expiry date | Apr 30, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/041
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composition for polysulfide-based resin comprising a polythiol having 4 or more functional groups and a compound having a reactive unsaturated bond(s) and/or b epoxy group(s) and/or c iso(thio)cyanato group(s) in one molecule (however, a+b+c.gtoreq.2, and a and b are not simultaneously 0). A polysulfide-based resin obtained by curing the composition, an optical material comprising the resin, a lens consisting of the optical material and a method for producing the polysulfide-based resin are also set forth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.