Invention Grant
- Patent Title: Flexible pipe having a multi-layered structure
- Patent Title (中): 具有多层结构的柔性管
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Application No.: US13640552Application Date: 2011-03-18
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Publication No.: US09314989B2Publication Date: 2016-04-19
- Inventor: Karl Kuhmann , Andreas Dowe , Rainer Goering
- Applicant: Karl Kuhmann , Andreas Dowe , Rainer Goering
- Applicant Address: DE Essen
- Assignee: Evonik Degussa GmbH
- Current Assignee: Evonik Degussa GmbH
- Current Assignee Address: DE Essen
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: DE102010003909 20100413
- International Application: PCT/EP2011/054142 WO 20110318
- International Announcement: WO2011/128175 WO 20111020
- Main IPC: F16L11/00
- IPC: F16L11/00 ; B32B1/08 ; B32B27/28 ; B32B27/32 ; B32B27/34 ; F16L11/04

Abstract:
The invention relates to a flexible pipe having a multi-layered structure comprising unbonded layers, comprising an inner lining having the following layer arrangement: a) an innermost layer made of a fluoropolymer molding compound, b) an intermediate layer made of a molding compound on the basis of an olefinic polymer, which is selected from the group consisting of polyethylene, isotactic polypropylene, syndiotactic polypropylene and syndiotactic polystyrene, c) an outer layer made of a polyamide molding compound, wherein the layer made of a polyamide molding compound is particularly efficiently protected against hydrolysis. The pipe is thus particularly suited for offshore applications in oil or gas production.
Public/Granted literature
- US20130032239A1 FLEXIBLE PIPE HAVING A MULTI-LAYERED STRUCTURE Public/Granted day:2013-02-07
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