发明名称 |
SOLUTION POLYMERIZATION PROCESS CATALYZED BY A PHOSPHINIMINECATALYST |
摘要 |
A solution polymerization process using a phosphinimine catalyst and a boron activator is conducted at a temperature of about 170.degree.C or greater in the presence of trialkyl aluminum to produce polyethylene having a comparatively broad molecular weight distribution. The polyethylene product produced by the process of this invention is desirable because it can provide enhanced "processability" in comparison to polyethylene having a narrow molecular weight distribution. The process of this invention is advantageous in comparison to prior art processes for the preparation of "broad" polyethylene which use two polymerization reactors and/or more than one polymerization catalyst. The polymers produced by the process of this invention are potentially suitable for the preparation of plastic film. For example, a polyethylene according to this invention and having a density of about 0.93 grams per cubic centimeter and a melt index I2 (according to ASTM D 1238) of about 2 may be advantageously used to prepare cast film. In addition the present polyethylenes may be used for the manufacture of a wide variety of other goods including blow molded parts (such as tanks, drums and containers for gasoline or other liquids); extruded goods (such as profiles or hoses); and injection molded goods such as food containers.
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申请公布号 |
CA2347410(C) |
申请公布日期 |
2009.09.08 |
申请号 |
CA20012347410 |
申请日期 |
2001.05.11 |
申请人 |
NOVA CHEMICALS CORPORATION |
发明人 |
DOBBIN, CHRISTOPHER JOHN BROOKE;SWABEY, JOHN WILLIAM;BROWN, STEPHEN JOHN |
分类号 |
C08F210/16;C08F2/06;C08F4/645;C08F110/02 |
主分类号 |
C08F210/16 |
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