IMPROVED IN SITU BLENDS OF BIMODAL MOLECULAR WEIGHT DISTRIBUTION

摘要

Resins which are in situ catalytically produced blends of broad bimodal mole cular weight distribution ethylene resin are produced. The resins of the invention are characterized by a blend of low molecular we ight component and high molecular weight component with HMW component weight fraction which is greater than 0 (zero). Generally, the LMW/HMW weight fraction can be controlled within a very broad range. The resin has a molecular weight distribution, which is ch aracterized as MFR or Mw/Mn. The bimodal molecular weigh t resins can be processed into films on existing equipment, and exhibit good p rocessability in blown film production and provide film product of excellent FQR. The resin of the invention exhibits reduced tendency towar ds die-lip buildup and smoking in on-line operations.