Templating of solid particles by polymer multilayers

US7045146B2 · kind B2 · utility

Assignee

• Max-Planck-Gesellschaft zur Föderung der Wissenschaften e.V. · US

Inventors

• Frank Caruso · Colts Neck Township, US
• Dieter Trau · Kowloon, CN
• Helmuth Möhwald · Bingen, DE
• Reinhard Renneberg · Hong Kong, CN

Key dates

• Filing date: Jan 12, 2001
• Grant date: May 16, 2006
• Expiry date: Mar 28, 2022

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K2800/434
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Process for encapsulation of an uncharged crystalline solid particle include treating the crystalline solid particle material with amphiphilic substances and subsequently coating the material with a layer of charged polyelectrolyte or coating the material with a multilayer comprising alternating layers of oppositely charged polyelectrolytes.