Method of storing episulfide compound
US7309794B1 · kind B1 · utility
4Cited by
1References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2000 |
| Grant date | Dec 18, 2007 |
| Priority date | — |
| Expiry date | Nov 7, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D331/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Episulfide compounds useful as starting materials of optical materials are stably stored for a long period of time at a temperature ranging from their solidifying points to 20° C., preventing the production or precipitation of polymers and the yellowing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.