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

US7241507B2 · kind B2 · utility

Assignees

• Mitsubishi Polyester Film GmbH · US
• Schaefer Additivsysteme GmbH · DE

Inventors

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

Key dates

• Filing date: Sep 8, 2005
• Grant date: Jul 10, 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 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.