Highly branched polyphosphonates based on melamine

US5334692A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Bernhard Hess · Moers, DE
• Wolfgang Schulz-Schlitte · Langenfeld, DE
• Jurgen Kirsch · Cologne, DE
• Dieter Freitag · Krefeld, DE
• Uwe Arndt · Cologne, DE
• Hans-Georg Gehrke · Odenthal, DE
• Klaus Zander · Schöningen, DE

Key dates

• Filing date: Nov 24, 1993
• Grant date: Aug 2, 1994
• Expiry date: Nov 24, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2201/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

New, highly branched polyphosphonates which have a greatly improved flame retardant action compared with known polyphosphonates which are suitable as additives for plastics. In addition the new polyphosphonates may be incorporated in plastics as stabilizers with excellent migration properties.