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POLYMER COMPOSITION COMPRISING VERY HIGH MOLECULAR WEIGHT, LOW MOLECULARWEIGHT, AND HIGH MOLECULAR WEIGHT POLYETHYLENE FRACTIONS
POLYMER COMPOSITION COMPRISING VERY HIGH MOLECULAR WEIGHT, LOW MOLECULARWEIGHT, AND HIGH MOLECULAR WEIGHT POLYETHYLENE FRACTIONS
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机译:包含非常高的分子量,低的分子量和高的分子量的聚乙烯组分的聚合物组合物
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摘要
A polymer composition and a process for the production of this composition comprising a base resin is disclosed herein. The base resin includes a very high molecular weight component, a low molecular weight component, and a high molecular weight component having a weight average molecular weight higher than the weight average molecular weight of the low molecular weight component but lower than the weight average molecular weight of the very high molecular weight component. An amount of the very high molecular weight component in the base resin is 0.5 to 8 wt%. The very high molecular weight component has a viscosity average molecular weight of greater than 1100 kg/mol. The composition has FRR21/5 of equal to or greater than 38, a melt flow rate MFR21 of equal to or greater than 6.5 g/10 min and a viscosity at a shear stress of 747 Pa (eta747) of 450 to 3000 kPas.
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