Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Feng Jing0
Frank Chang0
Date of Patent
November 5, 2019
0Patent Application Number
157276740
Date Filed
October 9, 2017
0Patent Citations Received
...
Patent Primary Examiner
Patent abstract
The invention provides a polymerizable polydimethylsiloxane-polyoxyalkylene block copolymer which comprises (1) a linear polymer chain comprising at least two polydimethylsiloxane segments, one hydrophilic polyoxyalkylene segment between each pair of polydimethylsiloxane segments, and one amide-rich linker between each pair of one polydimethylsiloxane segment and one hydrophilic polyoxyalkylene segment, and (2) two terminal (meth)acryloyl groups. The hydrophilized polydiorganosiloxane vinylic crosslinker has a weight average molecular weight of at least 3000 Daltons. The invention is also related to a silicone hydrogel contact lens produced from a polymerizable polydimethylsiloxane-polyoxyalkylene block copolymer of the invention.
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