MUMBAI, India, Aug. 10 -- Intellectual Property India has published a patent application (202617019178 A) filed by Basf Se on February 19, 2026, for Prevention Of Desulfation During Preparation Of Sulfate And Sulfonate Surfactant Mixtures.
Inventors include Bittner, Christian; Weber, Steffen; Molt, Oliver; Koenig, Christian; Gumlich, Kai; Breitkreuz, Christian Frederik; Modhiya, Sumitkumar; Mishra, Ashok Kumar; Herman, George Couch; and Watts, Nathan A.
The application for the patent was published on July 31, 2026, under issue no. 31/2026.
Abstract: The present invention relates to a process for preparing a surfactant formulation comprising at least water, a sulfate surfactant, and a sulfonate surfactant. The process comprises the steps of mixing a sulfate and a sulfonic acid, obtaining a mixture of pH lower than 4, mixing them with a first mixing device, then adding a neutralizing agent and mixing with a second mixing device. The residence time of the sulfonic acid/sulfate mixture before neutralization of the sulfonic acid is shorter than 90 seconds. The process is suitable for preparing sulfate and sulfonate surfactant formulations to be used in oil recovery activities, such as enhanced oil recovery, or in gel detergents.
Disclaimer: Curated by HT Syndication.
