US 12,215,184 B2
Polyol or polythiol compound, preparation method therefor, transparent polyurethane-based resin prepared therefrom, and optical body
Keun Sik Kim, Suncheon-si (KR)
Filed by KS LABORATORIES CO., LTD., Jeollanam-do (KR); and Keun Sik Kim, Suncheon-si (KR)
Filed on Oct. 5, 2023, as Appl. No. 18/481,995.
Application 18/481,995 is a division of application No. 16/486,475, abandoned, previously published as PCT/KR2018/001884, filed on Feb. 13, 2018.
Claims priority of application No. 10-2017-0020263 (KR), filed on Feb. 15, 2017.
Prior Publication US 2024/0052089 A1, Feb. 15, 2024
Int. Cl. C08G 18/72 (2006.01); C07C 319/08 (2006.01); C07C 321/04 (2006.01); C07C 321/14 (2006.01); C07C 323/12 (2006.01); C08G 18/24 (2006.01); C08G 18/38 (2006.01); C08G 18/73 (2006.01); C08G 18/75 (2006.01); C08G 18/78 (2006.01); C08L 75/04 (2006.01); G02B 1/04 (2006.01); G02C 7/02 (2006.01)
CPC C08G 18/72 (2013.01) [C07C 319/08 (2013.01); C07C 321/04 (2013.01); C07C 321/14 (2013.01); C07C 323/12 (2013.01); C08G 18/24 (2013.01); C08G 18/242 (2013.01); C08G 18/38 (2013.01); C08G 18/3876 (2013.01); C08G 18/73 (2013.01); C08G 18/755 (2013.01); C08G 18/757 (2013.01); C08G 18/758 (2013.01); C08G 18/7831 (2013.01); C08L 75/04 (2013.01); G02B 1/04 (2013.01); G02B 1/041 (2013.01); G02C 7/02 (2013.01)] 6 Claims
 
1. A polythiol compound or an isomer thereof represented by Formula (b):

OG Complex Work Unit Chemistry
(wherein, Y is a sulfur atom; Ra is methyl or ethyl; and
Rb is —CH(CH2SH)CH2SCH2CH(CH2SH)SCH(CH3)CH2SH).