Process for preparing polyethylene articles of high tensile strength and modulus and low creep and articles thus obtained
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United States of America Patent
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Jul 7, 1992
Issued Date -
N/A
app pub date -
Jun 19, 1990
filing date -
Oct 31, 1986
priority date (Note) -
Expired
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Abstract
Polethylene articles having a high tensile strength above 2.0 GPa, a modulus above 70 GPa and a creep below 3.times.10.sup.-7 sec.sup.-1 are obtained via thermoreversible gelation of a solution of polyethylene with a Mv above 5.times.10.sup.5 kg/kmole, followed by ultradrawing. As polyethylene a copolymer or a blend is used containing 2-20 lower alkyl side chains per 1000 carbon atoms.
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