Multilayer plastic pipe

US5554426A · kind A · utility

Assignee

• Huels Aktiengesellschaft · DE

Inventors

• Stefan Rober · Hamburg, DE
• Hans Jadamus · Marl, DE
• Hans Ries · Marl, DE

Key dates

• Filing date: Mar 24, 1995
• Grant date: Sep 10, 1996
• Expiry date: Mar 24, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31786
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Multilayer plastic pipes having at least PA1 I. a layer based on a molding composition of polyamide; and PA1 II. a layer adjacent to layer I and based on a molding containing a mixture of PA2 (a) from 97.5 to 50% by weight of polyvinylidene fluoride; and PA2 (b) from 2.5 to 50% by weight of an acrylate copolymer, with the layers adhering to one another, are provided. These pipes exhibit improved resistance to chemical agents such as, methanol-containing fuels, without the loss of typical properties of polyamide and polyvinylidene fluoride.