US 12,454,652 B2
Alkylated, aminated and alkoxylated macromolecules with integrated trifunctional properties for the removal of petroleum emulsions
César Andrés Flores Sandoval, Mexico City (MX); Flavio Salvador Vázquez Moreno, Mexico City (MX); Fernando Alvarez Ramírez, Mexico City (MX); Gerardo Zavala Olivares, Mexico City (MX); Citlally Janinne Vargas Martínez, Mexico City (MX); Jessica Valeria Fuentes Santiago, Mexico City (MX); Edgar Benedicto Zamora Guerrero, Mexico City (MX); Enrique Cevada Maya, Mexico City (MX); and Erika Gómez Buendía, Mexico City (MX)
Assigned to INSTITUTO MEXICANO DEL PETRÓLEO, Mexico City (MX)
Filed by INSTITUTO MEXICANO DEL PETRÓLEO, Mexico City (MX)
Filed on Oct. 5, 2021, as Appl. No. 17/494,436.
Claims priority of application No. MX/a/2020/010501 (MX), filed on Oct. 5, 2020.
Prior Publication US 2022/0106530 A1, Apr. 7, 2022
Int. Cl. C10G 33/04 (2006.01); C08F 220/18 (2006.01); C08F 220/28 (2006.01); C08F 220/34 (2006.01); C08L 33/08 (2006.01); C08F 220/26 (2006.01)
CPC C10G 33/04 (2013.01) [C08F 220/18 (2013.01); C08F 220/28 (2013.01); C08F 220/34 (2013.01); C08L 33/08 (2013.01); C08F 220/1802 (2020.02); C08F 220/1803 (2020.02); C08F 220/1804 (2020.02); C08F 220/1805 (2020.02); C08F 220/1806 (2020.02); C08F 220/1808 (2020.02); C08F 220/1811 (2020.02); C08F 220/1812 (2020.02); C08F 220/26 (2013.01); C08F 220/281 (2020.02); C08F 220/282 (2020.02); C10G 2300/206 (2013.01); C10G 2300/302 (2013.01); C10G 2300/308 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A dehydrating agent of crude oil comprising a random terpolymer based on a combination of at least one alkyl acrylate, at least one aminoalkyl acrylate monomer in an amount between about 5.0 and about 49.5 wt % in the random terpolymer, and at least one alkoxyalkyl acrylate, wherein the terpolymer consists of structural formula (1) and has a number average molecular mass (Mn) from about 1,000 to about 450,000 g mol-1, wherein structural formula (1) is as follows:

OG Complex Work Unit Chemistry
wherein:
R1, R2, R3, R4, R5 and R6 are independent radicals and wherein:
R1=methyl, ethyl, n-butyl, iso-butyl, tert-butyl, pentyl, n-hexyl, 2-ethylhexyl, 3,5,5-trimethylhexyl, n-octyl, iso-octyl, n-decyl, isodecyl, 10-undecenyl, tert-butylcyclohexyl, n-dodecyl, n-octadecyl, tridecyl, or behenyl;
R2=methylamine, 2-ethylamine, 3-propylamine, 2-(dimethylamino)ethyl, 2-(diethylamino)ethyl, 3-(dimethylamino) propyl, or N-morpholinyl ethyl;
R3=methoxymethyl, 2-methoxyethyl, ethoxymethyl, 2-ethoxyethyl, 3-methoxypropyl, 3-ethoxypropyl, 2-(2-methoxyethoxy)ethyl, butoxyethyl; and
R4, R5, and R6═H (hydrogen) and/or CH3 (methyl);
wherein:
x is a number from 4 to 900,
y is a number from 4 to 900,
z is a number from 4 to 900, and
the “x,” “y,” and “z” polymer units occur in random sequences,
wherein the random terpolymer destabilizes water-in-oil (W/O) emulsions, so as to remove emulsified water and salts dissolved in the emulsions, thereby being effective as a dehydrating agent of crude oil.