Process for cleaning thermoplasts by friction compacting

US5306803A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Wolfgang Arlt · Hohen Neuendorf, DE
• Manfred Schmidt · Krefeld, DE
• Thomas Fischer · Graz, AT
• Ralf Lange · Krefeld, DE

Key dates

• Filing date: May 17, 1991
• Grant date: Apr 26, 1994
• Expiry date: May 17, 2011

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02W30/62
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for cleaning thermoplasts is described. The thermoplast to be cleaned is introduced between the discs of a plast compactor and substantially freed from unwanted residues from the polymerization process by the force and rise in temperature produced by the movement of rotation.