US 12,234,315 B2
Molded product and uses thereof
Yusuke Matsui, Omuta (JP); Masayuki Furuya, Arao (JP); and Shinsuke Ito, Omuta (JP)
Assigned to MITSUI CHEMICALS, INC., Tokyo (JP)
Appl. No. 17/437,199
Filed by MITSUI CHEMICALS, INC., Tokyo (JP)
PCT Filed Mar. 13, 2020, PCT No. PCT/JP2020/011205
§ 371(c)(1), (2) Date Sep. 8, 2021,
PCT Pub. No. WO2020/189570, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. 2019-048082 (JP), filed on Mar. 15, 2019.
Prior Publication US 2022/0169777 A1, Jun. 2, 2022
Int. Cl. C08G 18/38 (2006.01); G01B 1/00 (2006.01); G02B 1/04 (2006.01); G02B 5/30 (2006.01)
CPC C08G 18/3876 (2013.01) [G02B 1/041 (2013.01); G02B 5/305 (2013.01)] 8 Claims
 
1. A molded product comprising:
a polythiourethane,
wherein an SH group concentration of the molded product, according to an IR analysis method, is 0.50 wt % to 2.8 wt %, and
wherein the molded product does not include a photochromic compound,
wherein the polythiourethane is comprised of a constituent unit derived from a polyisocyanate compound (A) and a constituent unit derived from a polythiol compound (B),
the polyisocyanate compound (A) is one or more selected from the group consisting of hexamethylene diisocyanate, pentamethylene diisocyanate, xylylene diisocyanate, isophorone diisocyanate, bis (isocyanatomethyl) cyclohexane, dicyclohexylmethane diisocyanate, 2,5-bis (isocyanatomethyl) bicyclo-[2.2.1]-heptane, 2,6-bis (isocyanatomethyl) bicyclo-[2.2.1]-heptane, tolylene diisocyanate, phenylene diisocyanate, and diphenylmethane diisocyanate, and
the polythiol compound (B) is at least one selected from the group consisting of 5,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 4,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 4,8-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 4-mercaptomethyl-1,8-dimercapto-3,6-dithiaoctane, pentaerythritol tetrakis (2-mercaptoacetate), pentaerythritol tetrakis (3-mercaptopropionate), 2,5-bis (mercaptomethyl)-1,4-dithiane, bis (mercaptoethyl) sulfide, 1,1,3,3-tetrakis (mercaptomethylthio) propane, 4,6-bis (mercaptomethylthio)-1,3-dithiane, 2-(2,2-bis (mercaptomethylthio) ethyl)-1,3-dithiethane, 1,1,2,2-tetrakis (mercaptomethylthio) ethane, 3-mercaptomethyl-1,5-dimercapto-2,4-dithiapentane, tris (mercaptomethylthio) methane, and ethylene glycol bis (3-mercaptopropionate).