Polyethylene (PE) and polypropylene (PP) have come to be the most important polymers in the world: in 2010, the quantities produced for both plastic materials together amounted to more than 120 million tons; the estimated worldwide capacity for both polymer classes amounted to more than 160 million tons.
Ziegler-Natta (ZN) catalysis, for which Karl Ziegler and Giulio Natta were awarded the Nobel Prize for chemistry in 1963, is still widely used today. In PE production, it is used in 50 percent of all cases and in the production of PP, more than 95 percent of the time. The end products made from these versatile polymers include pipes for gas and water, fibers for clothing and carpets, foils for packaging, molded parts for bottles, appliance housings and car parts. Our Catylen® family of products are key components of the Ziegler and ZN catalysts; although they are used in very small amounts, they have a profound influence on the ultimate properties of the polymers. An average PP plant may produce 30000 kg of polymer per hour ... while consuming only 1 kg of donor!
Polypropylene (PP) is a thermoplastic polymer made by polymerization of propylene.
Polyethylene (PE) is a thermoplastic polymer made by polymerization of ethylene.