Biaxially orientated polypropylene multilayer film, process for its production, and its use

US5571613A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Detlef E. Schuhmann · Friedrichsthal, DE
• Thomas Dries · Bad Kreuznach, DE
• Adolf Wilheim · Wiesbaden, DE
• Dieter Scheidecker · Eltville am Rhein, DE
• Harald Lohmann · Neunkirchen, DE
• Ursula Murschall · Nierstein, DE
• Herbert Peiffer · Mainz, DE
• Gunter Schloegl · Kelkheim, DE

Key dates

• Filing date: Sep 20, 1995
• Grant date: Nov 5, 1996
• Expiry date: Sep 20, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31938
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A coextruded, biaxially orientated film comprising a base layer, which comprises a polypropylene or a polypropylene mixture, and at least one top layer comprising olefinic polymers. The top layer comprises a combination of inorganic and/or organic particles and tertiary aliphatic amine of the formula I ##STR1## in which R.sup.1 essentially is an at least partially unsaturated alkyl radical having at least 18 carbon atoms or an essentially completely saturated alkyl radical having 8 to 26 carbon atoms and PA1 R.sup.2 and R.sup.3 are identical or different and are R.sup.4 -CH.sub.2 OH, in which R.sup.4 is an essentially saturated C.sub.1-C.sub.6 -alkyl radical. The film is useful, for example, as a label or wrapping.