Hydrolysis-stable film comprising a polyester with a hydrolysis stabilizer and process for its production and its use

US7229697B2 · kind B2 · utility

Assignee

• Mitsubishi Polyester Film GmbH · US

Inventors

• Holger Kliesch · Ginsheim-Gustavsburg, DE
• Bodo Kuhmann · Runkel, DE
• Thorsten Kiehne · Wiesbaden, DE
• Ingo Fischer · Marl, DE
• Gottfried Hilkert · Saulheim, DE

Key dates

• Filing date: Sep 8, 2005
• Grant date: Jun 12, 2007
• Expiry date: Sep 8, 2025

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31786
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a hydrolysis-stable polyester film comprising a polyester, whose thickness is preferably in the range from 0.4 to 500 μm. The film comprises polyester and at least one hydrolysis stabilizer and is distinguished by its low hydrolysis rate. The invention furthermore relates to a process for the production of the film and its use.