US 12,435,280 B2
Crude oil demulsifier compositions and uses thereof
Ashish Dhawan, Aurora, IL (US); and Regan Andrew Jones, Sugar Land, TX (US)
Assigned to ECOLAB USA Inc., St. Paul, MN (US)
Filed by ECOLAB USA INC., St. Paul, MN (US)
Filed on Apr. 18, 2022, as Appl. No. 17/722,951.
Claims priority of provisional application 63/177,677, filed on Apr. 21, 2021.
Prior Publication US 2022/0364000 A1, Nov. 17, 2022
Int. Cl. C10G 33/04 (2006.01); B01D 17/04 (2006.01); C02F 1/68 (2023.01); C08F 222/06 (2006.01); C02F 101/32 (2006.01); C02F 103/36 (2006.01)
CPC C10G 33/04 (2013.01) [B01D 17/047 (2013.01); C02F 1/682 (2013.01); C08F 222/06 (2013.01); C02F 2101/32 (2013.01); C02F 2103/365 (2013.01)] 18 Claims
 
1. An emulsion, comprising water, an oil, and a composition, wherein the composition comprises an effective amount of a demulsifier, the demulsifier comprising a modified hydroxy-succinimide copolymer, wherein the modified hydroxy-succinimide copolymer comprises a structure selected from formula 1 or formula 2:

OG Complex Work Unit Chemistry
wherein R is a C8 to C36 alkyl group, X is linking group, each m is independently selected from 1 to 50, and n is selected from 5 to 200.
 
4. A method of resolving an emulsion, comprising:
providing an emulsion including water and an oil,
adding a composition to the water, the oil, and/or the emulsion,
wherein the composition comprises an effective amount of a demulsifier, the demulsifier comprising a modified hydroxy-succinimide copolymer, and
separating the water from the oil,
wherein the modified hydroxy-succinimide copolymer comprises a structure selected from formula 1 or formula 2:

OG Complex Work Unit Chemistry
wherein R is a C8 to C36 alkyl group, X is linking group, each m is independently selected from 1 to 50, and n is selected from 5 to 200.