Flame-resistant polycarbonate compositions containing phosphorus-silicon compounds

US7144935B2 · kind B2 · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Andreas Seidel · Dormagen, DE
• Michael Wagner · Dortmund, DE
• Jochen Endtner · Cologne, DE
• Wolfgang Ebenbeck · Leverkusen, DE
• Thomas Eckel · Dormagen, DE
• Dieter Wittmann · Leverkusen, DE

Key dates

• Filing date: Dec 3, 2003
• Grant date: Dec 5, 2006
• Expiry date: Jan 23, 2025

Classification

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

Abstract

A flame resistant poly(ester)carbonate composition is disclosed. The composition contains at least one phosphorus-silicon compound, the compound has a phosphorus content of 1 to 20% and a silicon content of 1 to 20%, and is characterized in that its weight loss (assessed by thermogravimetric analysis under nitrogen inert gas at a heating rate of 20° K/min,) at 280° C. is less than 30%. The preferred phosphorus-silicon compound is produced by thermal oligomerization from phosphorylated silanes.