Highly branched polyphosphonates

US5216113A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Wolfgang Schulz-Schlitte · Langenfeld, DE
• Jurgen Kirsch · Cologne, DE
• Karsten-Josef Idel · Krefeld, DE
• Gerd Fengler · Krefeld, DE
• Uwe Arndt · Cologne, DE
• Hans-Dieter Block · Cologne, DE

Key dates

• Filing date: Sep 24, 1990
• Grant date: Jun 1, 1993
• Expiry date: Sep 24, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L101/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The new polyphosphonates, which are highly branched through polyfunctional phosphorus compounds, are suitable for use as moldings, fibers or films and as flameproofing agents and stabilizers in plastics. The new highly branched polyphosphonates show high resistance to thermal ageing and ensure good processability coupled with high migration resistance at elevated in-use temperatures.