公开(公告)号：US11286232B2

公开(公告)日：2022-03-29

申请号：US16942565

申请日：2020-07-29

Applicant: Saudi Arabian Oil Company

Inventor： Xuan Zhang ,  Ming Han ,  Jinxun Wang

IPC: C07C237/52 ,  C07C231/02 ,  C09K8/584 ,  C07C233/36 ,  C07C233/38

Abstract: Compositions that include cationic surfactants and methods of synthesizing compositions that include cationic surfactants. The surfactants include a quaternary amine and a saturated or unsaturated alkyl chain with 4 to 28 carbons. The surfactants can be generated by reacting a fatty acid modified with an amino alkyl group and an epihalohydrin in the presence of a base. The cationic surfactants can be generated by reacting a fatty acid modified with an amino alkyl group, an epihalohydrin, and a carboxylic acid. The cationic surfactants can be generated by reacting a carboxylic acid, an epihalohydrin, and a catalyst to afford a halo-substituted alkyl ester, followed by reacting the halo-substituted alky ester with a fatty acid modified with an amino alkyl group.