Chain-extended polysiloxane crosslinkers with dangling hydrophilic polymer chains
US9052440B2 · kind B2 · utility
33Cited by
189References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2014 |
| Grant date | Jun 9, 2015 |
| Priority date | — |
| Expiry date | Aug 6, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2207/109
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention provide a class of linear chain-extended polysiloxane crosslinkers which comprises two terminal ethylenically unsaturated groups, at least two polysiloxane segments, and dangling hydrophilic polymer chains each covalently attached to a divalent organic radical separating each pair of adjacent polysiloxane segments. The present invention is also related to a polymer comprising crosslinking units derived from chain-extended polysiloxane crosslinker of the invention and to ophthalmic lenses comprising such a polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.