Patent · US Active

Preparation of cationic surfactants

US11286232B2 · kind B2 · utility

1Cited by

13References

11Claims

0Family size

Assignee

SAUDI ARABIAN OIL COMPANY · SA

Inventors

Xuan Zhang · Acton, US
Ming Han · Beijing, CN
Jinxun Wang · Dhahran, SA

Key dates

Filing date	Jul 29, 2020
Grant date	Mar 29, 2022
Priority date	—
Expiry date	Jul 29, 2040

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K8/584
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.