公开(公告)号：US12287055B2

公开(公告)日：2025-04-29

申请号：US17312481

申请日：2019-12-20

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Yahya Banat ,  Nasser Abdullah Al-Saif ,  Abdelhamid Mokdad

IPC: F16L9/12 ,  C08F4/6592 ,  C08L23/08

Abstract: The present invention relates to a pipe comprising an ethylene-based polymer, wherein the ethylene-based polymer: ⋅ comprises ≥0.10 mol % of units derived from 1-hexene, with regard to the total molar quantity of polymeric units of the ethylene-based polymer; ⋅ has an Mw/Mn as determined in accordance with ASTM D6474 (2012) of ≥2.5 and ≤4.0, preferably of ≥2.5 and ≤3.4; ⋅ has a density as determined in accordance with ASTM D792 (2008) of ≥925 and ≤945 kg/m3; and ⋅ in the molecular weight range of log(Mw) between 4.0 and 5.5, has a comonomer branch content of between 2 and 15 comonomer-derived branches per 1000 carbon atoms in the polymer, as determined via 13C NMR. Such pipe provides a desirably high long-term strength, as demonstrated by its high strain hardening modulus, as well as desirably high impact strength, as demonstrated by its high Charpy impact strength. Further, such pipe may be compliant with the PE-RT requirements of ISO 22391-1 (2009). For example, such pipe may be used for containing water at temperatures in the range of 40° C. to 80°.