US 12,441,845 B2
Siloxane monomer, contact lens composition and contact lens
Ting-Yu Li, Taoyuan (TW); and Min-Yung Huang, Taoyuan (TW)
Assigned to PEGAVISION CORPORATION, Taoyuan (TW)
Filed by PEGAVISION CORPORATION, Taoyuan (TW)
Filed on Feb. 7, 2023, as Appl. No. 18/106,894.
Claims priority of application No. 111137128 (TW), filed on Sep. 30, 2022.
Prior Publication US 2024/0132670 A1, Apr. 25, 2024
Int. Cl. C08G 77/14 (2006.01); C08K 5/07 (2006.01); C08K 5/11 (2006.01); C08K 5/5397 (2006.01); G02B 1/04 (2006.01)
CPC C08G 77/14 (2013.01) [C08K 5/07 (2013.01); C08K 5/11 (2013.01); C08K 5/5397 (2013.01); G02B 1/043 (2013.01)] 10 Claims
 
1. A siloxane monomer represented by Chemical Formula 1 below and used in preparation of a contact lens:

OG Complex Work Unit Chemistry
wherein R1 is H or CH3;
wherein R2 is NHR3, N(R3)2, OR3, SR3, or

OG Complex Work Unit Chemistry
 where n is not greater than 6;
wherein R3 is

OG Complex Work Unit Chemistry
 where n is not greater than 6;
wherein R4 is H or an alkyl group having a carbon chain length of C1 to C6; and
wherein x is greater than or equal to 0, y is greater than or equal to 1, and z is greater than or equal to 0.