Vinyl carbonate and vinyl carbamate contact lens material monomers
US6166236A · kind A · utility
42Cited by
11References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1997 |
| Grant date | Dec 26, 2000 |
| Priority date | — |
| Expiry date | Jan 21, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2603/74
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel monomers of the general formula ##STR1## where b is 0 or 1, a is 1, 2, 3 or 4, R.sup.2 is a monovalent alkyl radical and R is an organic radical. The novel monomers may be employed to produce novel copolymers useful as hydrogel, soft non-hydrogel and/or rigid gas permeable contact lens materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.