Polymer mixture consisting of an impact-resistance modified poly (meth) acrylate and a fluoropolymer

US7947781B2 · kind B2 · utility

Assignee

• Evonik Röhm GmbH · DE

Inventors

• Thomas Arndt · Bad König, DE
• Uwe Numrich · Weiterstadt, DE
• Norbert Deusch · Gundernhausen, DE
• Christoph Krohmer · Riedstadt, DE

Key dates

• Filing date: May 17, 2005
• Grant date: May 24, 2011
• Expiry date: Nov 7, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31935
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The invention relates to a molded body consisting of plastic with a material thickness of at least 150 $g(m)m at any point. Said body contains a polymer mixture of an impact-resistance modified poly(meth)acrylate plastic, a polymethyl methacrylate matrix, elastomer particles contained in said matrix and a fluoropolymer. According to the invention, the fraction of the fluoropolymer in the mixture is between 30 and 95 wt. % and the polymer mixture of the impact-resistance modified poly(meth)acrylate plastic and the fluoropolymer is present in an outer layer with a continuous material thickness of at least 10 $g(m)m. The invention is characterized in that the impact-resistance modified poly(meth)acrylate plastic consists of between 20 and 70 wt. % poly(meth)acrylate matrix and between 30 and 80 wt. % elastomer particles.