	US 11,926,682 B2
	Method for preparing polymerization initiator composition
Heung Kwon Bae, Daejeon (KR); Kyung Seog Youk, Daejeon (KR); Jung Rae Lee, Daejeon (KR); Hyun Min Lee, Daejeon (KR); Joong Chul Lim, Daejeon (KR); and Min Jeong Kang, Daejeon (KR)
Assigned to LG CHEM LTD., Seoul (KR)
Appl. No. 17/056,973
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Oct. 7, 2019, PCT No. PCT/KR2019/013092 § 371(c)(1), (2) Date Nov. 19, 2020, PCT Pub. No. WO2020/076024, PCT Pub. Date Apr. 16, 2020.
Claims priority of application No. 10-2018-0120951 (KR), filed on Oct. 11, 2018.
Prior Publication US 2021/0198388 A1, Jul. 1, 2021
Int. Cl. C08F 2/22 (2006.01); C08F 2/38 (2006.01); C08F 14/06 (2006.01)

CPC C08F 2/38 (2013.01) [C08F 2/22 (2013.01); C08F 14/06 (2013.01)]

8 Claims

1. A method for preparing a polymerization initiator composition, the method comprising:

(a) mixing water and a water-soluble initiator to prepare an aqueous initiator solution having a concentration of 1 to 10%; and

(b) activating the aqueous initiator solution, performed by

(b-1) heat treating the aqueous initiator solution for 0.5 hours to 4.5 hours at a temperature of 48 to 62° C.; and

(b-2) treating the aqueous initiator solution to achieve pH of 1 to 7,

wherein the steps (b-1) and (b-2) are performed in no particular order.