公开(公告)号：US20220135886A1

公开(公告)日：2022-05-05

申请号：US17099635

申请日：2020-11-16

Applicant: INSTITUTO MEXICANO DEL PETROLEO

Inventor： Cesar Andres FLORES SANDOVAL ,  Flavio Salvador VAZQUEZ MORENO ,  Fernando ALVAREZ RAMIREZ ,  Gerardo ZAVALA OLIVARES ,  Erika GOMEZ BUENDIA ,  Enrique CEVADA MAYA ,  Jessica Valeria FUENTES SANTIAGO ,  Edgar Benedicto ZAMORA GUERRERO ,  Citlally Janinne VARGAS MARTINEZ

IPC: C10G33/04 ,  C08F220/18 ,  C08F216/38

Abstract: The present invention is related to the use of ethylene alkanoate-alkyl acrylate bipolymers with a high randomness monomers distribution, which are synthesized by semicontinuous emulsion polymerization process, characterized because it is carried out using slow addition rate of the pre-emulsion feeding ({dot over (q)}≤0.009 kg·L−1·min−1), stabilized this last one by alkyl glycol ether type surfactants, at temperatures higher than 75° C. and with solids contents above 25 wt %, which avoids the formation of large sequences (blocks) of a same monomer. This structural characteristic gives the ethylene alkanoate-alkyl acrylate bipolymers a high efficiency as chemical agents for removal of complex water/crude oil emulsions of crude oil blends.