Method of coating particles and coated spherical particles

US6087003A · kind A · utility

Assignee

• Centre de Microencapsulation · FR

Inventors

• Jean-Pierre Benoit · Angers, FR
• Herve Rolland · Castres, FR
• Curt Thies · Ballwin, US
• Vincent Vande Velde · Brussels, BE

Key dates

• Filing date: May 2, 1997
• Grant date: Jul 11, 2000
• Expiry date: May 2, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2998
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A microparticle comprising an active substance which is a central core made of liquid, gaseous or solid particle of regular or irregular shape, and the method for entrapping said active substance in a coating material which is conformationally distributed on said active substance and has a thickness ranging from the thickness of a monomolecular layer to about 100 .mu.m. These compositions are useful for applications that require protection, prolonged release, taste masking, improved stability, altered handling behavior, altered surface properties including particle wettability, and other desirably altered properties.