UV-protected, multilayer polycarbonate sheets

US5846659A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Hartmut Lower · Krefeld, DE
• Siegfried Anders · Recklinghausen, DE
• Helmut Schmid · Freudenstadt, DE
• Wolfgang Nising · Sankt Augustin, DE

Key dates

• Filing date: Dec 7, 1995
• Grant date: Dec 8, 1998
• Expiry date: Dec 7, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31507
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

The present invention relates to UV-protected, multilayer polycarbonate sheets containing a base sheet, at least one outer layer and optionally at least one additional protective layer, and to the production of the polycarbonate sheets according to the invention by coextrusion.