Highly rigid, high-tenacity impact-resistant polystyrene

US6410654B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Philippe Desbois · Maikammer, DE
• Christian Schade · Ludwigshafen, DE
• Hermann Gausepohl · Mutterstadt, DE
• Volker Warzelhan · Bad Dürkheim, DE

Key dates

• Filing date: Dec 18, 2000
• Grant date: Jun 25, 2002
• Expiry date: Dec 18, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F279/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

An anionically polymerized impact-modified polystyrene has a yield stress of at least 24 MPa, measured at 23° C. to DIN 53455 and a hole impact strength of at least 11 kJ/m2, measured at 23° C. to DIN 53753, measured in each case on a specimen produced to ISO 3167. A preparation process is described.