Thiophosphine compounds
US7446228B2 · kind B2 · utility
1Cited by
9References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2006 |
| Grant date | Nov 4, 2008 |
| Priority date | — |
| Expiry date | Oct 20, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/05
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a thiosphosphine compound of formula:wherein X representswith R1 being H or —CH3, R and R′ represent, independently from each other, an alkyl radical, an alkoxy radical, an aryl radical or a phenyl radical which may be substituted with one or more alkyl and/or alkoxy groups, n is an integer from 0 to 4, n′ is an integer from 0 to 5, x is an integer from 0 to 2, y is an integer from 1 to 5 with the proviso that y+n is an integer from 1 to 5. The compounds can be used to make optically transparent articles such as ophthalmic lenses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.