	US 12,344,699 B2
	Method for halogenating isobutene-isoprene copolymer
Jong Yeol Baek, Daejeon (KR); Moon Gon Jeong, Daejeon (KR); Gyeong Shin Choi, Daejeon (KR); and Won Hee Kim, Daejeon (KR)
Assigned to LG Chem, Ltd., Seoul (KR)
Appl. No. 17/913,325
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Sep. 15, 2021, PCT No. PCT/KR2021/012584 § 371(c)(1), (2) Date Sep. 21, 2022, PCT Pub. No. WO2022/060084, PCT Pub. Date Mar. 24, 2022.
Claims priority of application No. 10-2020-0120299 (KR), filed on Sep. 18, 2020; and application No. 10-2020-0120663 (KR), filed on Sep. 18, 2020.
Prior Publication US 2023/0159673 A1, May 25, 2023
Int. Cl. C08F 8/24 (2006.01); C08F 8/22 (2006.01); C08F 210/10 (2006.01); C08F 236/08 (2006.01)

CPC C08F 8/24 (2013.01) [C08F 8/22 (2013.01); C08F 210/10 (2013.01); C08F 236/08 (2013.01)]

16 Claims

1. A method for halogenating an isobutene-isoprene copolymer, the method comprising:

(S1) preparing a mixture solution comprising an isobutene-isoprene copolymer, an organic hypochlorite and a hydrocarbon solvent; and

(S2) reacting the mixture solution with a halogenating agent to halogenate the isobutene-isoprene copolymer.