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:
Apr. 28, 1998
Filed:
Jan. 21, 1997
Applicant:
Inventors:
Christine Dalmazzone, Versailles, FR;
Gerard Hillion, Herblay, FR;
Assignee:
Institut Francais du Petrole, Rueil Malmaison, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210749 ; 210925 ; 252343 ; 252358 ;
Abstract
A process is described for the treatment of an aqueous medium which has been polluted with hydrocarbon compounds, termed crude oil, and a demulsifying and dispersing composition. The crude oil is brought into contact with a solution of a mixture of polyglycerol esters in a proportion of at least 50 ppm by weight in order to inhibit formation of a water-in crude oil emulsion or to partially break the emulsion if it has already formed. The polyglycerol esters can be combined with a surfactant, preferably an anionic surfactant, such as a sodium alkylsulphosuccinate.