	US 11,814,589 B2
	Solvent composition prepared from waste oil and method of preparing the same
Do Kyoung Kim, Daejeon (KR); Ka Young Kim, Daejeon (KR); Jeong Eop Choi, Daejeon (KR); Ok Youn Kim, Daejeon (KR); Hee Soo Kim, Daejeon (KR); Young Moo Park, Daejeon (KR); Ho Won Lee, Daejeon (KR); Jae Suk Choi, Daejeon (KR); and Hee Jung Jeon, Daejeon (KR)
Assigned to SK Innovation Co., Ltd., Seoul (KR); and SK Geo Centric Co., Ltd., Seoul (KR)
Filed by SK Innovation Co., Ltd., Seoul (KR); and SK Geo Centric Co., Ltd., Seoul (KR)
Filed on Apr. 20, 2022, as Appl. No. 17/724,889.
Claims priority of application No. 10-2021-0051878 (KR), filed on Apr. 21, 2021.
Prior Publication US 2022/0340824 A1, Oct. 27, 2022
Int. Cl. C10G 45/04 (2006.01); C10G 45/34 (2006.01)

CPC C10G 45/04 (2013.01) [C10G 45/34 (2013.01); C10G 2300/1007 (2013.01); C10G 2300/202 (2013.01); C10G 2300/205 (2013.01); C10G 2300/301 (2013.01)]

9 Claims

1. A method of preparing a solvent composition from a waste oil, the method comprising the steps of:

(a) separating at least a part of a waste oil into a first oil and a second oil, wherein the first oil has a boiling point of lower than 340° C. and the second oil has a boiling point of 340° C. or higher;

(b) reacting at least a part of the first oil to remove chlorine; and

wherein in (c), the dechlorinated first oil includes less than 10 ppm of chlorine and 0.1 to 40 wt % of an olefin, with respect to the total weight.