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:
Feb. 05, 2019
Filed:
Aug. 01, 2013
Ineos Europe Ag, Rolle, CH;
Dominique Jan, Beaufays, BE;
Loic Poullin, Lille, FR;
INEOS EUROPE AG, Rolle, CH;
Abstract
Pipe with an outer diameter of from 90 to 630 mm and a minimum wall thickness of higher than 3.6 mm, having (a) an extrapolated time-to-failure (ASTM F2023 and ASTM F2769-10, performed on 16 mm SDR 7.4 pipe) of at least 50 years (for classification code CL5), (b) a time to failure (ISO 1167, performed on 32 mm SDR 11 pipe) of at least 10000 hours (110° C. under hoop stress of 2.6 MPa), and (c) a resistance to slow crack growth (ISO 13479 (80° C., 9.2 bar, performed on 110 mm SDR 11 pipe)) of at least 5000 hrs. The pipe contains a copolymer of ethylene and an a-olefin, and has (a) a density (D) in the range 933-948 kg/m, (b) a melt index (MI) in the range 0.15-2.0 g/10 min, and (c) a melt elastic modulus G' (G″=500 Pa) in the range 40 to 150 Pa.