Hydrogel materials
US10160854B1 · kind B1 · utility
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10References
21Claims
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Key dates
| Filing date | Aug 1, 2016 |
| Grant date | Dec 25, 2018 |
| Priority date | — |
| Expiry date | Aug 3, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/043
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A dual reactivity crosslinking agent of formula I having at least two different reactive sites, and hydrogel materials prepared from at least two monomers with different rates of free-radical polymerization reactivity. The crosslinking agent includes at least one free-radical reactive site for vinyl-containing monomer and at least one free-radical reactive site for meth(acrylic)-containing monomer. The hydrogel materials are useful in the manufacture of biocompatible medical devices, for example, hydrogel materials having desirable physical properties useful as contact lens materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.