	US 12,351,662 B2
	Optical resin composition manufacturing method and optical resin composition
Tomoaki Hishiki, Osaka (JP)
Assigned to NITTO DENKO CORPORATION, Ibaraki (JP)
Appl. No. 17/782,337
Filed by NITTO DENKO CORPORATION, Ibaraki (JP)
PCT Filed Dec. 4, 2020, PCT No. PCT/JP2020/045276 § 371(c)(1), (2) Date Jun. 3, 2022, PCT Pub. No. WO2021/112232, PCT Pub. Date Jun. 10, 2021.
Claims priority of application No. 2019-219758 (JP), filed on Dec. 4, 2019.
Prior Publication US 2023/0060316 A1, Mar. 2, 2023
Int. Cl. C08F 214/18 (2006.01); C08F 4/34 (2006.01); C08F 8/00 (2006.01); C08F 8/26 (2006.01)

CPC C08F 214/182 (2013.01) [C08F 4/34 (2013.01); C08F 8/00 (2013.01); C08F 2810/40 (2013.01)]

9 Claims

1. An optical resin composition manufacturing method comprising performing a heat treatment of a fluorine-containing polymer under an atmosphere having a water vapor concentration of 100 volppm or less and including an inert gas as a main component, the fluorine-containing polymer being obtained by polymerization of a monomer group including a fluorine-containing compound having a carbon-carbon double bond using an organic peroxide.