Flame-resistant polycarbonate molding compositions

US5356965A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Richard Weider · Leverkusen, DE
• Thomas Scholl · New Haven, US
• Klaus Kircher · Leverkusen, DE
• Klaus Horn · Dortmund, DE

Key dates

• Filing date: May 11, 1993
• Grant date: Oct 18, 1994
• Expiry date: May 11, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/42
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Flame-resistant polycarbonate molding compositions containing halogen-free sulphonic acid salts of aromatic aldehydes or acetals of these aldehydes in quantities of about 0.005 to 10% relative to the total weight of the composition are disclosed. The compositions optionally further containing inorganic sulphates, exhibit flame retardance and little tendency to dripping in comparison to prior art compositions.