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. 18, 2014
Filed:
Aug. 31, 2006
Thomas F. Ameye, Grimbergen, BE;
Dominique Jan, Beaufays, BE;
Fabian Siberdt, Brussels, BE;
Ineos Manufacturing Belgium NV, Antwerp, BE;
Abstract
A composition suitable for use in pressure pipes and pipe fittings is disclosed comprising polymer of ethylene and from 0.5 to 5 wt % of a C-Calpha-olefin which has a natural density of 935-956 kg/m, a melt index MIof 0.15-0.5 g/10 min, a dynamic complex viscosity at 100 rad/s and 190° C. (η) of no more than 2500 Pa·s, a relationship between ηand dynamic complex viscosity measured in Pa·s at 0.01 rad/s and 190° C. (η) defined by the equation η>115000+30. η, and an environmental stress crack resistance as measured by a notched pipe test performed according to ISO13479:1997 on 110 mm SDR 11 pipes at 80° C. and a pressure of 9.2 bar, of greater than 1000 hours, or: wherein the C-Calpha-olefin is 1-hexene or 1-octene.