Biaxially oriented hydrolysis-stable polyester film comprising epoxidized fatty acid derivatives and a chain extender, and process for production thereof and use thereof

US8710121B2 · kind B2 · utility

Assignee

• Mitsubishi Polyester Film GmbH · US

Inventors

• Holger Kliesch · Ginsheim-Gustavsburg, DE
• Bodo Kuhmann · Runkel, DE
• Thomas Hackl · Asperg, DE
• Dagmar Klein · Ockenheim, DE
• Ingo Fischer · Marl, DE
• Annegrete Bursch · Düsseldorf, DE

Key dates

• Filing date: Apr 2, 2009
• Grant date: Apr 29, 2014
• Expiry date: Nov 25, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02A40/966
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to biaxially oriented polyester films which contain 0.25-20% by weight (based on the weight of the film) of a hydrolysis stabilizer based on epoxidized fatty acid esters and/or epoxidized fatty acid glycerides, and a chain extender. Such films find use in outdoor applications, as a ribbon cable, as a backside laminate of solar modules and in electrical insulation applications.