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. 29, 2016
Filed:
Mar. 07, 2011
Robert Engel, Speyer, DE;
Wolfgang Gerlinger, Limburgerhof, DE;
Stefan Braese, Troisdorf, DE;
Thierry Muller, Strassburg, FR;
Christina Belenki, Karlsruhe, DE;
Heike P. Schuchmann, Stutensee, DE;
Marion Gedrat, Karlsruhe, DE;
Robert Engel, Speyer, DE;
Wolfgang Gerlinger, Limburgerhof, DE;
Stefan Braese, Troisdorf, DE;
Thierry Muller, Strassburg, FR;
Christina Belenki, Karlsruhe, DE;
Heike P. Schuchmann, Stutensee, DE;
Marion Gedrat, Karlsruhe, DE;
BASF SE, Ludwigshafen, DE;
Abstract
Method of producing a nanoparticle suspension with the steps (i) preparation of an emulsion of a disperse polar phase, where the aqueous phase comprises one or more precursor substances forming the nanoparticles, in a continuous organic phase in the presence of an emulsifier stabilizing the emulsion, (ii) conversion of the one or more precursor substances to nanoparticles in the disperse aqueous phase, (iii) breaking of the emulsion and phase separation, where the nanoparticle suspension is obtained as one phase, (iv) separation off of the nanoparticle suspension, (v) optionally isolation of the nanoparticles from the nanoparticle suspension, wherein the emulsifier is selected from compounds of the general formula (I) in which X is O, NH, Y is C(O), NH, R is a saturated or a mono- or polyunsaturated, linear or branched hydrocarbon radical having 6 to 30 carbon atoms and Ris hydrogen or C-C-alkyl, and Ris a saturated or a mono- or polyunsaturated, linear or branched hydrocarbon radical having 1 to 30 carbon atoms, preferably 6 to 30 carbon atoms, Ris C-C-alkyl, n is 0 or 1, and the breaking of the emulsion is effected by splitting the emulsifier.