US 12,129,232 B2
Anti-fouling dispersant composition and method of use
Dengchao Yan, Shanghai (CN); Yongtao Shi, Shanghai (CN); Mike Hong, Shanghai (CN); Xiaofeng Tang, Shanghai (CN); and Guixi Zhang, Shanghai (CN)
Assigned to BL Technologies, Inc., Minnetonka, MN (US)
Appl. No. 17/259,082
Filed by BL Technologies, Inc., Minnetonka, MN (US)
PCT Filed Jun. 24, 2019, PCT No. PCT/US2019/038680
§ 371(c)(1), (2) Date Jan. 8, 2021,
PCT Pub. No. WO2020/013978, PCT Pub. Date Jan. 16, 2020.
Claims priority of application No. 201810769623.3 (CN), filed on Jul. 13, 2018.
Prior Publication US 2021/0269343 A1, Sep. 2, 2021
Int. Cl. C07C 7/20 (2006.01); C02F 5/10 (2023.01); C08G 65/00 (2006.01); C11D 1/722 (2006.01); C02F 103/02 (2006.01); C11D 1/72 (2006.01); C11D 3/28 (2006.01)
CPC C07C 7/20 (2013.01) [C02F 5/10 (2013.01); C08G 65/00 (2013.01); C11D 1/722 (2013.01); C02F 2103/023 (2013.01); C02F 2303/20 (2013.01); C02F 2303/22 (2013.01); C02F 2305/00 (2013.01); C11D 1/72 (2013.01); C11D 3/28 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method of reducing fouling in olefin production system, the method comprising:
adding an antifouling dispersant composition to an olefin production system, the antifouling dispersant composition comprising an alcohol polyoxyethylene (EO) ether (EO number 3-7), represented by the general formula

OG Complex Work Unit Chemistry
wherein R is an alkyl with about 12-16 carbon atoms; and n is 3-7; and
one or more organic solvents comprising a glycol, a glycol ether, a glycerol or a pyrrolidone.