Chain-extended polysiloxane crosslinkers with dangling hydrophilic polymer chains
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United States of America Patent
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Sep 16, 2014
Grant Date -
Apr 12, 2012
app pub date -
Oct 5, 2011
filing date -
Oct 6, 2010
priority date (Note) -
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status (Latency Note)
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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.
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International Classification(s)
- A61K:PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOS....
- A01N:PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLA....
- C08G:MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN B....
- C08F:MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONL....
- G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- A61P:THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDI....
- C08L:COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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