US 12,435,183 B2
Polyester demulsifier
Hanamanthsa Shankarsa Bevinakatti, Somerset, NJ (US)
Assigned to NOURYON CHEMICALS INTERNATIONAL B.V., Arnhem (NL)
Appl. No. 17/303,859
Filed by NOURYON CHEMICALS INTERNATIONAL B.V., Arnhem (NL)
PCT Filed Dec. 11, 2019, PCT No. PCT/EP2019/084755
§ 371(c)(1), (2) Date Jun. 9, 2021,
PCT Pub. No. WO2020/120628, PCT Pub. Date Jun. 18, 2020.
Claims priority of provisional application 62/777,901, filed on Dec. 11, 2018.
Claims priority of application No. 19152548 (EP), filed on Jan. 18, 2019.
Prior Publication US 2022/0041803 A1, Feb. 10, 2022
Int. Cl. C08G 63/48 (2006.01); B01D 17/04 (2006.01); C08G 63/668 (2006.01)
CPC C08G 63/48 (2013.01) [B01D 17/047 (2013.01); C08G 63/668 (2013.01)] 8 Claims
 
1. A demulsifier comprising the reaction product of:
a) alkoxylated castor oil;
b) an acid having at least two carboxyl groups; and
c) optionally, a fatty acid;
wherein the alkoxylated castor oil comprises from 5 to 200 moles of alkoxy units per mole of castor oil and wherein the demulsifier has the structure:

OG Complex Work Unit Chemistry
wherein R′ is —H or —CO—R, R is a hydrocarbon having from 7 to 21 carbon atoms, and X is a hydrocarbon having from 4 to 34 carbon atoms.