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:
Mar. 06, 2001
Filed:
Feb. 12, 1999
Frédéric Kolenda, Lyons, FR;
Jean-Louis Guth, Mulhouse, FR;
Sabine Valange, Leignon Beligique, FR;
Zelimir Gabelica, Warenne-Oleye Belgique, FR;
Eric Benazzi, Chatou, FR;
Institut Francais du Petrole, Rueil Malmaison Cedex, FR;
Abstract
Hydrated aluminium compounds of the present invention are represented by the general formula nS, mM, Al,O,, xH,O where S is a surfactant or a group of surfactants, n is the number of moles of S, M is an alkaline cation, preferably selected from the group formed by Na,, K,, NH,, m is the number of moles of M and x is the number of moles of water. The hydrated compounds are obtained from inorganic aluminium sources which are in the form of cation-monomers and/or cation-oligomers. The surfactants are anionic and/or non-ionic surfactants. When the group of surfactants comprises at least one anionic surfactant, at least one cationic surfactant can optionally be added.