	US 12,264,121 B2
	1,3-bisisocyanatomethylcyclohexane composition and optical resin prepared therefrom
Fulin Zhu, Shandong (CN); Jianfeng Li, Shandong (CN); Peng Wang, Shandong (CN); Wenbin Li, Shandong (CN); Jie Chen, Shandong (CN); Qiao Wang, Shandong (CN); Qian Wu, Shandong (CN); Hao Chen, Shandong (CN); Yonghua Shang, Shandong (CN); and Yuan Li, Shandong (CN)
Assigned to WANHUA CHEMICAL GROUP CO., LTD., Shandong (CN)
Appl. No. 17/772,352
Filed by WANHUA CHEMICAL GROUP CO., LTD., Shandong (CN)
PCT Filed Jul. 7, 2020, PCT No. PCT/CN2020/100732 § 371(c)(1), (2) Date Apr. 27, 2022, PCT Pub. No. WO2021/103550, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 201911199670.X (CN), filed on Nov. 29, 2019.
Prior Publication US 2022/0402865 A1, Dec. 22, 2022
Int. Cl. C07C 265/14 (2006.01); C08G 18/38 (2006.01); C08G 18/75 (2006.01); G02B 1/04 (2006.01)

CPC C07C 265/14 (2013.01) [C08G 18/3855 (2013.01); C08G 18/757 (2013.01); G02B 1/041 (2013.01)]

11 Claims

1. A 1,3-bis(isocyanatomethyl)cyclohexane composition, comprising: based on a weight of 1,3-bis(isocyanatomethyl)cyclohexane,

a) 65 wt % to 95 wt % of trans-1,3-bis(isocyanatomethyl)cyclohexane; and

b) greater than 0 and less than or equal to 0.5 wt % of 1,4-bis(isocyanatomethyl)cyclohexane;

wherein the 1,3-bis(isocyanatomethyl)cyclohexane comprises cis-1,3-bis(isocyanatomethyl)cyclohexane and trans-1,3-bis(isocyanatomethyl)cyclohexane;

wherein the 1,3-bis(isocyanatomethyl)cyclohexane composition comprises more than 0 and less than or equal to 600 ppm of 1-isocyanatomethyl-3-methylcyclohexane, based on the weight of 1,3-bis(isocyanatomethyl)cyclohexane.