Matt, UV stable, flame-retardant co-extruded polyester film, a method for the production thereof and the use of the same

US6730406B2 · kind B2 · utility

Assignee

• Mitsubishi Polyester Film GmbH · US

Inventors

• Ursula Murschall · Nierstein, DE
• Ulrich Kern · Ingelheim am Rhein, DE
• Guenther Crass · Taunusstein, DE
• Gottfried Hilkert · Saulheim, DE

Key dates

• Filing date: Jul 18, 2002
• Grant date: May 4, 2004
• Expiry date: Jul 18, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31797
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The invention relates to a co-extruded, biaxially oriented polyester film consisting of a base layer and at least one outer layer. The film contains at least one flame-retardant agent, at least one UV-stabilizer and has a matt outer layer which contains a mixture and/or a blend of two components (I) and (II), whereby component (I) is substantially a polyethylene terephthalate homopolymer, or a polyethylene terephthalate copolymer, or a mixture of polyethylene terephthalate homopolymers or polyethylene terephthalate copolymers, and component (II) is a polymer containing at least one sulphonate group.