Multilayer plastic pipe

US5512342A · kind A · utility

Assignee

• Huels Aktiengesellschaft · DE

Inventors

• Stefan Rober · Hamburg, DE
• Hans Jadamus · Marl, DE
• Michael Boer · Johannesweg, DE
• Roland Feinauer
• Hans-Dieter Herrmann · Marl, DE
• Hans Ries · Marl, DE

Key dates

• Filing date: Jan 28, 1994
• Grant date: Apr 30, 1996
• Expiry date: Jan 28, 2014

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/1393
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A plastic pipe having improved resistance, inter alia, to methanol-containing fuels and improved mechanical properties, comprising at least: PA1 (I) an outer layer, PA1 (III) an inner layer comprising a moulding composition based on polyvinylidene fluoride, and PA1 (II) an intermediate layer disposed between said inner layer (I) and said outer layer (III) comprising a moulding composition based on a mixture of PA2 (a) polyamide, and PA2 (b) polyglutarimide, wherein the adjacent layers (I) to (III) are each adhesively bonded to one another.