Production of inorganic-organic composite materials by reactive spray-drying

US9138381B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Andreas Kempter · Neustadt, DE
• Max Siebert · Ludwigshafen, DE
• Heidrun Debus · Eisenberg, DE

Key dates

• Filing date: Feb 7, 2014
• Grant date: Sep 22, 2015
• Expiry date: Feb 7, 2034

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2/04
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Process for producing composite materials by reactive spray-drying, where a liquid phase A, which comprises inorganic cations, and a liquid phase B, which comprises anions which, with the inorganic cations, form a salt that is insoluble in the mixture of the liquid phases are sprayed together using at least one multi-substance nozzle, and where at least one hydrophobic active ingredient is present in dissolved form in at least one liquid spraying phase, and where the salt formed from the cations of phase A and the anions of phase B has a solubility of less than 0.02 mol/l in the neutral aqueous medium.