The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 14, 1987
Filed:
Dec. 02, 1985
Rudolf Pistorius, Hunstetten, DE;
Hoechst Aktiengesellschaft, , DE;
Abstract
A process for the isolation under mild conditions of paraffinsulfonate from the aqueous reaction mixtures which result from the sulfoxidation of n-paraffins, from which sulfur dioxide has been removed by degassing, and which contain higher molecular weight sulfonic acids, sulfuric acid, n-paraffins and water, in which aliphatic alcohols having 2 to 8 carbon atoms and organic solvents, which are insoluble in water or miscible with water to only a limited extent, are simultaneously allowed to act on the reaction mixtures, the aqueous phase which has separated out and contains sulfuric acid is removed, and the product phase containing paraffinsulfonates is neutralized, evaporated, and the remaining paraffin is driven out with superheated steam.