发明名称 |
FOLIEN MIT HOHER REISSFESTIGKEIT AUS HAFNOCEN- KATALYSIERTEN POLYETHYLENEN |
摘要 |
A polyethylene film having a balance of improved physical and mechanical properties and a method for making the same are provided. In one aspect, the film includes a 1% secant modulus of greater than 25,000 psi, a dart impact resistance of greater than 500 g/mil, and a MD tear strength of greater than 500 g/mil. In one aspect, the method comprises reacting ethylene derived units and a comonomer in the presence of a hafnium-based metallocene at a temperature of from 70° C. and 90° C., an ethylene partial pressure of from 120 psia and 260 psia, and a comonomer to ethylene ratio of from 0.01 to 0.02 to produce an ethylene based polymer. The method further comprises extruding the ethylene based polymer at conditions sufficient to produce a polyethylene film comprising a secant modulus of greater than 25,000 psi, a dart impact resistance of greater than 500 g/mil, and a MD tear strength of greater than 500 g/mil. |
申请公布号 |
AT488362(T) |
申请公布日期 |
2010.12.15 |
申请号 |
AT20040750076T |
申请日期 |
2004.04.13 |
申请人 |
UNIVATION TECHNOLOGIES, LLC |
发明人 |
SZUL, JOHN;FARLEY, JAMES;MCCULLOUGH, LAUGHLIN;IMPELMAN, RYAN |
分类号 |
B32B27/32;B29C47/88;B32B27/00;C08F4/06;C08F4/44;C08F4/64;C08F4/659;C08F8/00;C08F10/00;C08F210/14;C08F210/16;C08J5/18;C08L23/08 |
主分类号 |
B32B27/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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