Granular solid with monodisperse particle size distribution

US6927240B2 · kind B2 · utility

Assignee

• Cognis Deutschland GmbH & Co. KG · DE

Inventors

• Karl Schmid · Mettmann, DE
• Gerhard Wollmann · Hilden, DE
• Bernhard Gutsche · Hilden, DE
• Michael Neuss · Cologne, DE
• Gilbert Roegel · Meaux, FR

Key dates

• Filing date: Feb 21, 2001
• Grant date: Aug 9, 2005
• Expiry date: Sep 24, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2/02
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A process for making granular solids involving: (a) providing a substantially anhydrous preparation, which is solid at room temperature and contain at least one cosmetic feed material; (b) liquifying the substantially anhydrous preparation to form a melt; (c) providing a vibrating casting plate used for droplet formation; (d) introducing the melt onto the vibrating casting plate to form melt droplets thereon; (e) providing a cooling medium; and (f) contacting the melt droplets with the cooling medium which is passed countercurrently to the melt droplets, thus forming the granular solids, and wherein the granular solids have a monodisperse particle size distribution and are substantially free of particles having a diameter of less than 0.3 mm.