This article offers a strategic assessment of the technology for the production of polymers based on ethylene and propylene (mainly polyethylene and polypropylene), demonstrating the trends related to new products, markets and competitors, based on information extracted from patent documents published since 1990. The term "patent document" covers published patent applications or granted patents. A vision of the technological trends in the polyolefin industry in Europe and North America has been elucidated based upon the analysis of the patent documents studied during this research, and four technological indicators were identified and quantified: catalysts, molecular attributes, product type and range of application. One important conclusion concerned the concentration of technology: 6% of the companies with patent activity hold around 40% of the total number of documents, while 20% of the total is controlled by just four depositing companies. A trend has been noticed whereby companies seek innovation at the final stages of the production chain, with a high concentration of patents being for products and improved applications.
technological trends; polyethylene; polypropylene; study; patent database; polymers; catalysts
