Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yuan Chang0
Daqing Wu0
Michelle Plavnik0
Augustine Twum Kumi0
Steve Yun Zhang0
Junhao Ge0
Date of Patent
April 2, 2024
0Patent Application Number
175124310
Date Filed
October 27, 2021
0Patent Citations
...
Patent Primary Examiner
Patent abstract
Described herein is a method for producing photochromic silicone hydrogel contact lenses in a relatively efficient and consistent manner from a polymerizable composition under a controlled thermal curing scheme. The main polymerizable components in the polymerizable composition are a high radical-reactive hydrophilic (meth)acrylamido monomer, a high radical-reactive siloxane-containing (meth)acrylamido monomer, and a polysiloxane vinylic crosslinker(s) free of low-reactive ethylenically unsaturated group as the main crosslinker. The thermal free radical initiator having a 10 hour half-life temperature (T
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