Polymerizable chain-extended polysiloxanes with pendant hydrophilic groups

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United States of America Patent

PATENT NO 9109091
APP PUB NO 20150152228A1
SERIAL NO

14618135

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Abstract

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The invention provide a class of chain-extended polysiloxane crosslinkers which comprises (1) at least two polylsiloxane segments, wherein each pair of adjacent polysiloxane segments is linked by one divalent organic radical which includes at least one pendant hydrophilic group (hydroxyl and/or carboxyl groups) or at least one dangling hydrophilic polymer chain and a di-thioether linkage —S-DR-S— in which DR is a divalent organic radical; and (2) two terminal ethylenically unsaturated groups. 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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Patent Owner(s)

Patent OwnerAddress
ALCON INCFRIBOURG FREIBURG FRIBOURG

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chang, Frank Cumming, US 140 3073
Huang, Jinyu Suwanee, US 45 750
Sanders, Laura Ann Johns Creek, US 3 191

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