US 11,945,914 B2
Curable composition and optical material comprising cured product thereof
Heon Kim, Daejeon (KR); Hee Jung Choi, Daejeon (KR); and Yeongrae Chang, Daejeon (KR)
Assigned to LG CHEM, LTD., Seoul (KR)
Appl. No. 17/263,065
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed May 19, 2020, PCT No. PCT/KR2020/006529
§ 371(c)(1), (2) Date Jan. 25, 2021,
PCT Pub. No. WO2020/235913, PCT Pub. Date Nov. 26, 2020.
Claims priority of application No. 10-2019-0059609 (KR), filed on May 21, 2019.
Prior Publication US 2021/0163684 A1, Jun. 3, 2021
Int. Cl. C08G 75/06 (2006.01); C08G 75/0222 (2016.01); C08G 75/0268 (2016.01); G02B 1/04 (2006.01)
CPC C08G 75/06 (2013.01) [C08G 75/0222 (2013.01); C08G 75/0268 (2013.01); G02B 1/041 (2013.01)] 18 Claims
 
1. A curable composition for forming a high refractive index optical material comprising: an episulfide compound; a cyclic disulfide compound containing one or more repeating units represented by the following Chemical Formula 1; and a reducing agent,

OG Complex Work Unit Chemistry
wherein in the Chemical Formula 1,
Ar1 is a heteroarylene having 2 to 30 carbon atoms and containing at least one of nitrogen (N) and sulfur (S) atoms, and
n is an integer of 1 to 5.