Ethylene polymer composition
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 18, 2014
Grant Date -
May 21, 2009
app pub date -
Aug 31, 2006
filing date -
Sep 5, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
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 C4-C8 alpha-olefin which has a natural density of 935-956 kg/m3, a melt index MI5 of 0.15-0.5 g/10 min, a dynamic complex viscosity at 100 rad/s and 190° C. (η100) of no more than 2500 Pa·s, a relationship between η100 and dynamic complex viscosity measured in Pa·s at 0.01 rad/s and 190° C. (η0.01) defined by the equation η0.01>115000+30. η100, 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 C4-C8 alpha-olefin is 1-hexene or 1-octene.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully