Basf Se Corporation

Karlsruher Institut Fur Technologie

Stefan Braese

Wolfgang Gerlinger

Heike P Schuchmann

Robert Engel

Marion Gedrat

Nicole Jung

Thierry Muller

Simone Graessle

Christina Belenki

Derivatives of 1,3-dithianes and 1,3-dithiolanes of the general formula 1a or salts thereof of the general formula 1b where P=polymeric support, m=1 or 2, Z is an organic linker or X=inorganic or organic anion, processes for preparation thereof and use thereof.

Polymer-fixed derivatives of dithiolane or dithiane

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. 

Method of producing nanoparticle suspensions

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Troisdorf, Germany

Stefan Braese