Recent Developments in Transition Metal Catalyzed Olefin Polymerization–A Survey. I. Ethylene Polymerization

Abstract

Abstract High density polyethylene (HDPE) is a major commodity thermoplastic used for a variety of applications such as blow molding, injection molding, and pipe and tubing. This remarkable polymer has been manufactured since the early 1950s, but because of its industrial importance, the production of HDPE continues to be a very active area of technology. In recent years, the worldwide recession, reduced and varying demand, overcapacity, and fierce price competition has stimulated polyolefin manufacturers to modify their existing facilities, making it feasible to interchangeably manufacture a variety of resins. New improved catalysts and processes have been developed to produce HDPE of desired properties at lower manufacturing cost.