Biological materials

US4269821A · kind A · utility

Assignees

• Jorg Kreuter · CH
• Peter Paul Speiser · CH

Inventors

• Jorg Kreuter · Bad Homburg vor der Höhe, DE
• Peter Speiser · Zürich, CH

Key dates

• Filing date: May 2, 1980
• Grant date: May 26, 1981
• Expiry date: May 2, 2000

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S977/918
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

There are described processes for the preparation of submicroscopic particles of physiologically acceptable polymer associated with a biologically active material, by polymerizing a monomer in the presence of the biologically active material or by adsorbing the biologically active material upon preformed submicroscopic polymer particles. Where the biologically active material is an antigen, the particles are useful as constituents of injectable vaccines having an adjuvant effect.