Flame-proofed polystyrene foamed materials

US6420442B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Franz-Josef Dietzen · Haßloch, DE
• Guiscard Glück · Mainz, DE
• Gerd Ehrmann · Deidesheim, DE
• Gerhard Turznik · Arnstadt, DE
• Gerhard Alicke · Worms, DE
• Klaus Hahn · Lampertheim, DE
• Martin Klatt · Bad Dürkheim, DE
• Karlheinz Braun · Ludwigshafen, DE

Key dates

• Filing date: Jun 11, 2001
• Grant date: Jul 16, 2002
• Expiry date: Jun 11, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S521/907
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Flame-retardant foam slabs are based on styrene polymers wherein from 1 to 12% by weight of expanded graphite and also, if desired, from 1 to 12% by weight of a phosphorus compound are present as flame retardants.