	US 11,867,874 B2
	Insert materials with high oxygen permeability and high refractive index
Jing Cheng, Suwanee, GA (US); Wei Liang, Johns Creek, GA (US); and Steve Yun Zhang, Sugar Hill, GA (US)
Assigned to Alcon Inc., Fribourg (CH)
Filed by Alcon Inc., Fribourg (CH)
Filed on Mar. 18, 2021, as Appl. No. 17/205,169.
Claims priority of provisional application 62/991,724, filed on Mar. 19, 2020.
Prior Publication US 2021/0302625 A1, Sep. 30, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 1/04 (2006.01); C08G 77/06 (2006.01); C08G 77/32 (2006.01); C08J 3/24 (2006.01)

CPC G02B 1/043 (2013.01) [C08G 77/06 (2013.01); C08G 77/32 (2013.01); C08J 3/246 (2013.01); C08G 2210/00 (2013.01); C08G 2270/00 (2013.01); C08J 2383/04 (2013.01); C08J 2433/08 (2013.01)]

18 Claims

1. An insert for being embedded in a silicone hydrogel contact lens, comprising a crosslinked polymeric material, which comprises:

(1) repeating units of at least one silicone-containing polymerizable material;

(2) repeating units of at least one aryl acrylic monomer; and

(3) repeating units of at least one vinylic crosslinking agent,

wherein the sum of the amounts of components (1) and (2) of the crosslinked polymeric material is at least about 70% by weight relative to the total weight of the crosslinked polymeric material, wherein the crosslinked polymeric material in dry state has a glass transition temperature of greater than about 28° C., wherein the crosslinked polymeric material in fully hydrated state has a water content of less than about 5% by weight, an oxygen permeability of at least about 60 barrers, and a refractive index of at least about 1.45.