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