Multilayer plastic pipe

US5449024A · kind A · utility

Assignee

• Huels Aktiengesellschaft · DE

Inventors

• Stefan Rober · Hamburg, DE
• Roland Feinauer
• Hans-Dieter Herrmann · Marl, DE
• Hans Jadamus · Marl, DE
• Joachim Mugge · Haltern, DE
• Hans Ries · Marl, DE

Key dates

• Filing date: Dec 3, 1993
• Grant date: Sep 12, 1995
• Expiry date: Dec 3, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S138/07
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Multilayer plastic pipe comprising at least one outer layer based on polyamide and at least one layer of a linear, crystalline polyester modified by means of an isocyanate mixture exhibits improved resistance, inter alia, to methanol-containing fuels and improved mechanical properties.