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:
Mar. 07, 2017
Filed:
Jun. 04, 2009
Choon Kooi Chai, Overijse, BE;
Dominique Jan, Beaufays, BE;
Choon Kooi Chai, Overijse, BE;
Dominique Jan, Beaufays, BE;
INEOS MANUFACTURING BELGIUM NV, London, GB;
Abstract
Copolymers comprising ethylene and alpha-olefins having (a) a density (D) in the range 930-960/g/m(b) a melt index (MI) in the range 0.1-3.5 g/10 min (c) a melt elastic modulus G' (G″=500 Pa) in the range 40 to 150 Pa, and (d) a ratio of complex dynamic shear viscosities η*(0.1)/η(100) in the range 1.5 to 5.5. The copolymers are suitable for use as Polyethylenes of Raised Temperature Resistance (PE-RT) for use in hot water piping systems. The copolymers may be prepared by use of meltallocene catalyst systems. Pipes having a time to failure of ≧500 hrs measured according to ISO 1167 at 110° C. and 2.6 MPa prepared in a single reactor are also disclosed.