PMI foams with improved mechanical properties, in particular with increased elongation at tear

US9212269B2 · kind B2 · utility

Assignee

• Evonik Röhm GmbH · DE

Inventors

• Kay Bernhard · Darmstadt, DE
• Mathias Hempler · Alzenau, DE
• Werner Geyer · Heilbad Heiligenstadt, DE
• Thomas Barthel · Detroit Lakes, US
• Torsten Jahn · Dieburg, DE

Key dates

• Filing date: Jun 29, 2011
• Grant date: Dec 15, 2015
• Expiry date: Jul 5, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/1376
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to compounds for producing polymethacrylimide foam materials (PMI foams) with particularly good mechanical properties, in particular with a particularly advantageous elongation at tear. The invention further relates to methods for producing, processing, and using said foam materials. In particular, the invention relates to novel materials, the propensity of which to form tears is clearly reduced in comparison to the prior art. This is tantamount to an elongation at tear that is higher in comparison to the prior art.