High-Density Polyethylene, Properties and Manufacture

Commercial High-Density Polyethylene, Properties and Manufacture 

High-density polyethylene (0.94-0.97 g/cm is produced commercially with two types of catalysts  

The two catalytic systems are used at different conditions. Both types have undeigone evolution from earlier development. The original practices are summarized in Table 5.1. 

The Ziegler process yields polyethylene as low as 0.94 g/cm in density, but process modifications can result in products with a density of 0.965 g/cm. The transition metal oxide catalysts on support, on the other hand, yield products in the density range of 0.960-0.970 g/cm.  

CHAPTER 5 Ziegler-Natta process Chromium oxide on support Molybdenum oxide on support 

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