Invention Grant
- Patent Title: Bimodal high density polyethlyene
- Patent Title (中): 双峰高密度聚乙烯
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Application No.: US10635864Application Date: 2003-08-06
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Publication No.: US07754840B2Publication Date: 2010-07-13
- Inventor: Donald R. Loveday , David H. McConville , John F. Szul , Kersten Anne Erickson , Simon Mawson , Tae Hoon Kwack , Frederick J. Karol , David James Schreck
- Applicant: Donald R. Loveday , David H. McConville , John F. Szul , Kersten Anne Erickson , Simon Mawson , Tae Hoon Kwack , Frederick J. Karol , David James Schreck
- Applicant Address: US TX Houston
- Assignee: Univation Technologies, LLC
- Current Assignee: Univation Technologies, LLC
- Current Assignee Address: US TX Houston
- Agent Leandro Arechederra, III; Kevin M. Faulkner
- Main IPC: C08F110/02
- IPC: C08F110/02 ; B29C73/00 ; F16L55/16 ; F16L11/00
Abstract:
The present invention is directed to a bimodal polyethylene comprising ethylene derived units and units derived from at least one of a C4 to C12 olefin; wherein the polyethylene has a density of from 0.940 to 0.970 g/cm3; an I21/I2 of 80 or more; a residual Group 4 metal content of 2.0 ppm or less: a Mw/Mn of from 20 to 60; and wherein the polyethylene comprises a high molecular weight component and a low molecular weight component, the high molecular weight component present from 40 to 60 weight percent based on the total polyethylene, and wherein the bimodal polyethylene has a weight avenge molecular weight Mw of 180,000 a.m.u. or more.
Public/Granted literature
- US20040030066A1 Catalyst composition, method of polymerization, and polymer therefrom Public/Granted day:2004-02-12
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