Highly concentrated, water-free amine salts of hydrocarbon alkoxysulfates and use and method using aqueous dilutions of the same

US9758718B2 · kind B2 · utility

Assignee

• Sasol Germany GmbH · DE

Inventors

• Britta Jakobs-Sauter · Langenfeld, DE
• Uwe Kaltwasser · Marl, DE
• Heinz Napierala · Herten, DE
• Herbert Koch · Dorsten, DE
• Meinolf Enneking · Herne, DE

Key dates

• Filing date: Jan 24, 2014
• Grant date: Sep 12, 2017
• Expiry date: Jan 24, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K8/602
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to highly concentrated, anhydrous amine salts of hydrocarbon polyalkoxy sulfates, wherein the salts are selected from the group of substituted amines, preferably alkanolamines. The products obtained are of low viscosity and pumpable at room temperature. Due to the absence of water, the salts are highly resistant to hydrolysis, even at high temperatures. The invention further relates to the use of the compositions according to the invention in an aqueous dilution for use in oil reservoirs with the aim of achieving enhanced oil production, or for the recovery of hydrocarbons from tar sands or other surfaces or materials provided with hydrocarbon.