Patent · US Active

Multilayer pipe with polyamide layer

US9551441B2 · kind B2 · utility

4Cited by

8References

15Claims

0Family size

Assignee

EVONIK DEGUSSA GMBH · DE

Inventors

Andreas Dowe · Borken, DE
Juergen Franosch · Marl, DE
Jan Berger · Oslo, NO
Claudia Behrens · Herdecke, DE

Key dates

Filing date	Mar 26, 2014
Grant date	Jan 24, 2017
Priority date	—
Expiry date	Nov 15, 2034

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB32B2597/00
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A pipe or pipeline for use in the oil and gas industry for conveying lines, collection pipelines and transport pipelines with reduced operating risk and increased lifetime is provided. The pipe contains: a) an external reinforcement layer and b) an internal liner which comprises securely bonded to one another: I) a layer made of a thermoplastic molding composition selected from a polyolefin molding composition and a fluoropolymer molding composition and II) a layer made of a polyamide molding composition, wherein not only the polyamide molding composition but also the molding composition of the layer according to I) in essence comprises no blend component which is composed of another polymer and which has disperse distribution in the molding composition.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.