Diepisulfide based prepolymers and their use in the optical field
US6486298B1 · kind B1 · utility
5Cited by
4References
42Claims
0Family size
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Key dates
| Filing date | Dec 22, 2000 |
| Grant date | Nov 26, 2002 |
| Priority date | — |
| Expiry date | Jan 10, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/041
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for making a stabilized, liquid, diepisulfide based prepolymer having a viscosity at 25 C. ranging from 20 to 330000 centipoises which comprises polymerizing at room temperature a monomer composition comprising at least one diepisulfide monomer in the presence of at least one anionic polymerization initiator and at least one halogenated polymerization inhibitor and compositions made therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.