Thermostable microporous polymethacrylimide foams

US8722751B2 · kind B2 · utility

Assignee

• Evonik Röhm GmbH · DE

Inventors

• Jonas Scherble · Heilbad Heiligenstadt, DE
• Werner Geyer · Heilbad Heiligenstadt, DE
• Hermann Seibert · Kaiserslautern, DE
• Leonhard Maier · Babensham, DE
• Torsten Jahn · Dieburg, DE
• Thomas Barthel · Detroit Lakes, US

Key dates

• Filing date: Jul 23, 2004
• Grant date: May 13, 2014
• Expiry date: Dec 2, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31721
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The invention relates to compositions for producing polymethacrylimide foams having reduced pore size. The inventive method allows production of a microporous foam with an especially homogeneous pore size distribution without having to use insoluble nucleation agents.