US 12,545,843 B2
Random acrylic terpolymers of controlled molecular mass employed in the destabilization of W/O simple and/or O/W/O complex emulsions in crude oils
César Andrés Flores Sandoval, Mexico City (MX); Flavio Salvador Vázquez Moreno, Mexico City (MX); Patricia Pérez Romo, Mexico City (MX); Gerardo Zavala Olivares, Mexico City (MX); Citlally Janinne Vargas Martínez, Mexico City (MX); Gerardo Nicolas Rodríguez Araujo, Mexico City (MX); Geanine Lisbeth Manobanda Navas, Mexico City (MX); Metzil Corona Estrada, Mexico City (MX); Carlos David Rodríguez Araujo, Mexico City (MX); Héctor Alejandro Aranda Hernández, Mexico City (MX); and Enrique Cevada Maya, Mexico City (MX)
Assigned to Instituto Mexicano del Petróleo, Mexico City (MX)
Filed by Instituto Mexicano del Petróleo, Mexico City (MX)
Filed on Sep. 28, 2023, as Appl. No. 18/476,641.
Claims priority of application No. MX/a/2023/009450 (MX), filed on Aug. 11, 2023.
Prior Publication US 2025/0051654 A1, Feb. 13, 2025
Int. Cl. C10G 33/04 (2006.01); C08F 218/08 (2006.01); C08F 220/14 (2006.01); C08F 220/28 (2006.01)
CPC C10G 33/04 (2013.01) [C08F 218/08 (2013.01); C08F 220/14 (2013.01); C08F 220/281 (2020.02); C10G 2300/1033 (2013.01); C10G 2300/201 (2013.01); C10G 2300/308 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A random terpolymer based on alkyl acrylate-ethylene alkanoate-alkoxyalkyl acrylate as a dehydrating agent of crude oil, comprising a structural formula of molecular masses between 1,150 and 994,000 g·mol−1 as follows:

OG Complex Work Unit Chemistry
where:
R1, R2, R3, R4, R5 and R6 are independent radicals represented by the following groups:
R1=CH3 (methyl), C2H5 (ethyl), C4H9 (n-butyl), C4H9 (iso-butyl), C4H9 (tert-butyl), C5H11 (pentyl), C6H13 (n-hexyl), C6H11 (di(ethylene glycol)ethylether), C8H17 (2-ethylhexyl), C9H19 (3,5,5-trimethylhexyl), C8H17 (n-octyl), C8H17 (iso-octyl), C8H9 (ethylene glycol phenyl ether), C10H21 (n-decyl), C10H21 (iso-decyl), C10H19 (10-undecenyl), C10H19 (tert-butylcyclohexyl), C12H25 (n-dodecyl), C18H37 (n-octadecyl), C5H9O (tetrahydrofurfuryl), C5H9O (2-tetrahydropyranyl), C13H27 (tridecyl), or C22H45 (behenyl), and can include, in an aliphatic chain, at least one of heteroatoms of ether groups and benzene type aromatic rings or heteroatoms rings of ether groups;
R2=CH3 (methyl), C2H5 (ethyl), C3H7 (propyl), C4H9 (n-butyl), (CH3)3C (t-butyl), C6H5 (phenyl), C8H17 (n-octyl), C9H19 (n-nonyl), C11H23 (undecyl), or C17H35 (octadecanyl);
R3=C2H5O (methoxymethyl), C3H7O (2-methoxyethyl), C4H9O (2-ethoxyethyl), C4H9O (3-methoxipropyl), C5H11O (3-ethoxypropyl), C5H11O2 (2-(2-methoxyethoxi)ethyl), or C8H9O (2-phenoxyethyl), wherein an alkylalkoxy fragment could include phenyls, alkyls of cyclic or branched chain from C1 to C20;
R4 and R6=H (hydrogen) and/or CH3 (methyl); and
R5=H, CH3 and/or CN;
wherein:
x=is a number set up from 4 to 1075;
y=is a number set up from 4 to 1075;
z=is a number set up from 4 to 1075; and
x, y and z may optionally occur as random sequences.