发明名称 |
POLYMERS MADE WITH METALLOCENE CATALYSTS, FOR USE IN ROTOMOLDING AND INJECTION MOLDING PRODUCTS |
摘要 |
Ethylene alpha-olefin copolymers formed by contacting at least one supported metallocene catalyst, ethylene, and an alpha-olefin in a gas phase reactor are disclosed. In some embodiments, the polymer may have: a density of between 0.890 and 0.970 g/cc; a melt index of between 0.7 and 200 dg/min; a melt index ratio of less than 30; an ESCR value of greater than 1000 hours; and a 1% secant modulus of greater than 75,000 psi. In other embodiments, the polymer may have: a density of between 0.930 g/cc and 0.970 g/cc; a melt index of between 10 dg/min and 200 dg/min; a melt index ratio of between 10 and 25; a part weight of greater than 3 g and a part length of greater than 38 cm in a spiral flow test, and; a zero shear viscosity of less than 150 Pa·s. Processes to produce these polymers are also disclosed. |
申请公布号 |
CA2651305(A1) |
申请公布日期 |
2008.01.03 |
申请号 |
CA20072651305 |
申请日期 |
2007.06.05 |
申请人 |
UNIVATION TECHNOLOGIES, LLC |
发明人 |
DAVEY, CHRISTOPHER R.;FARLEY, JAMES M.;KOLB, RAINER;OSSOWSKI, MARK P. |
分类号 |
C08F210/16 |
主分类号 |
C08F210/16 |
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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