Ophthalmic devices derived from grafted polymeric networks and processes for their preparation and use
US11834547B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Feb 25, 2021 |
| Grant date | Dec 5, 2023 |
| Priority date | — |
| Expiry date | Jul 23, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2270/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Provided are ophthalmic devices comprised of a reaction product of a composition comprising: (i) a crosslinked substrate network containing covalently bound activatable free radical initiators; and (ii) a grafting composition containing one or more ethylenically unsaturated compounds. Also provided are processes for making ophthalmic devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.