POLYETHYLENE COMPOSITION FOR PIPE APPLICATIONS WITH IMPROVED SAGGING PROPERTIES
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United States of America Patent
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Jan 5, 2017
app pub date -
Dec 22, 2014
filing date -
Dec 23, 2013
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Abstract
The present invention relates to a polyethylene composition comprising,
- a base resin (A) comprisinga copolymer of ethylene and at least one comonomer selected from alpha-olefins having from three to twelve carbon atoms,wherein the ethylene copolymer comprises a low molecular weight component (A-1) and a high molecular weight component (A-2) with the low molecular weight component (A-1) having a lower weight average molecular weight than the high molecular weight component (A-2),(B) carbon black in an amount of 1.0 to 10 wt % based on the total amount of the polyethylene composition, and(C) optional further additives other than carbon black.
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