US 12,384,865 B2
Contact lens material and contact lens
Wei-An Yeh, Taoyuan (TW); and Ting-Yu Li, Taoyuan (TW)
Assigned to PEGAVISION CORPORATION, Taoyuan (TW)
Filed by PEGAVISION CORPORATION, Taoyuan (TW)
Filed on Feb. 21, 2022, as Appl. No. 17/676,636.
Claims priority of provisional application 63/152,503, filed on Feb. 23, 2021.
Prior Publication US 2022/0275129 A1, Sep. 1, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C08F 226/10 (2006.01); G02B 1/04 (2006.01)
CPC C08F 226/10 (2013.01) [G02B 1/043 (2013.01)] 8 Claims
 
1. A contact lens material derived from:
a hydrophilic monomer;
a crosslinking agent;
an initiator; and
a siloxane monomer,
wherein, based on a total weight of the contact lens material being 100 parts by weight, an amount of the siloxane monomer is between 5 parts by weight and 50 parts by weight; and a chemical skeletal formula of the siloxane monomer is represented by formula (II-1) or formula (II-2):

OG Complex Work Unit Chemistry
wherein R1 is H or methyl group (—CH3); X1 is O or NR8; X2 is CH—OR9 or absent;
wherein R2 is methyl group (—CH3) or absent; R3 is

OG Complex Work Unit Chemistry
wherein R4, R7, R8 and R9 are independent of each other and each is H or methyl group (—CH3) or

OG Complex Work Unit Chemistry
wherein R10 is H or methyl group (—CH3); R5 and R6 are independent of each other and each is alkyl group, aryl group, alkoxy group, aryloxy group or OSiR11R12R13;
wherein R11, R12 and R13 are independent of each other and each is alkyl group, aryl group, alkoxy group or aryloxy group;
wherein a is a positive number ranging from 1 to 3,
wherein c is a positive number ranging from 0 to 3,
wherein n is a positive number ranging from 1 to 3, and
wherein b is a positive number ranging from 0 to 8.