The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 06, 2021
Filed:
Nov. 01, 2016
Applicant:
National Oilwell Varco Denmark I/s, Brondby, DK;
Inventors:
Inger-Margrete Procida, Hellerup, DK;
Allan Boye Hansen, Sandefjord, NO;
Assignee:
NATIONAL OILWELL VARCO DENMARK l/S, Brondby, DK;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L 11/08 (2006.01); C08L 23/14 (2006.01); C08L 23/12 (2006.01); C08L 23/08 (2006.01); C08K 7/14 (2006.01); B32B 15/08 (2006.01); B32B 27/22 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B32B 27/08 (2006.01); B32B 1/00 (2006.01); E21B 17/01 (2006.01);
U.S. Cl.
CPC ...
F16L 11/081 (2013.01); B32B 1/00 (2013.01); B32B 15/08 (2013.01); B32B 27/08 (2013.01); B32B 27/22 (2013.01); B32B 27/30 (2013.01); B32B 27/32 (2013.01); C08K 7/14 (2013.01); C08L 23/0815 (2013.01); C08L 23/12 (2013.01); C08L 23/14 (2013.01); E21B 17/01 (2013.01); B32B 2307/306 (2013.01); B32B 2307/544 (2013.01); B32B 2307/546 (2013.01); B32B 2307/732 (2013.01); B32B 2597/00 (2013.01); C08L 2203/18 (2013.01); C08L 2205/02 (2013.01); C08L 2205/025 (2013.01); C08L 2205/16 (2013.01);
Abstract
Disclosed is an unbonded flexible pipe for subsea transportation of fluids. The pipe has a length and a centre axis and includes a plurality of layers including at least one polypropylene based layer including a modified polypropylene compound including: at least about 50% by weight of a base polypropylene (base PP) which consists of polypropylene including up to about 10% by weight of one or more co-monomers other than propylene, and at least about 1% by weight of a plastomer including a propylene and at least one co-monomer other than propylene.