April 2000

Trends and Resources

HP Impact: HPImpact: Developments improve bimodal LLDPE

Poor processability of first-generation linear low-density polyethylene (LLDPE) has prevented full penetration of this polymer into the high-pressure LDPE market. Significant catalyst and process deve..

Weirauch, Wendy, Hydrocarbon Processing Staff

Poor processability of first-generation linear low-density polyethylene (LLDPE) has prevented full penetration of this polymer into the high-pressure LDPE market. Significant catalyst and process developments have improved the processability of PEs. Thus, these resins now have broad bimodal molecular weight distributions (MWDs). Several major licensors / manufacturers of PE have made significant progress for this polymer. Union Carbide has developed a new LLDPE catalyst. It has constructed a 660-million lb/yr (MMlb/yr) two-reactor cascade gas-phase plant to process bimodal LLDPE and high-density polyethylene (HDPE). Borealis introduced a new supercritical slurry PE technology that c

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