Borstar

Combined with Borealis' unique catalyst technology, Borstar® supports the production of a wide range of enhanced polyethylene (PE) and polypropylene (PP) products for the most demanding applications by enabling molecular design. The Borstar process offers simultaneous improvements in conversion economics and in key environmental aspects, such as energy efficiency and raw material recycling.

Borstar is Borealis' state-of-the-art multi-modal proprietary technology for manufacturing PE and PP. Borealis provides continued Borstar development and is further commercializing the next generation of Borstar such as Borstar PE 3G. The new developments represent a leap forward in process technology, allowing flexible polymer design from bi-modal to multi-modal PE/PP resins and facilitating the development of an ever-widening range of new plastics that outperform alternative materials in meeting the needs of manufacturers and end users.

The cornerstone of the Borstar technology is delivering innovative products through its efficient and flexible design. Borstar's key components are proprietary polyolefin multimodal process technology and proprietary catalyst systems.

The Borstar multimodal polymerization process enables tailor-made polymer materials for demanding applications via:

• broad ranging polymer design freedom (e.g. molecular weight, molecular weight distribution, comonomer distribution and crystal morphology)
• large product property window and feature combinations (e.g. high strength and processability, stiffness and impact, clarity and toughness)
• high and consistent quality; supported by a proprietary developed Advanced Process Control (BorAPC)

This makes it possible to create more sophisticated, customer-oriented solutions characterized by a unique property combination.

Borstar materials feature, depending on the application, a number of special property and structural benefits, which are realized from tailoring the resin's molecular structure in both the Borstar PE and Borstar PP processes. These include:

• toughness and high environmental stress-cracking resistance (ESCR)
• long-term creep/burst resistance
• uniquely high stiffness/impact balance is in combination with add-on functionalities like surface aesthetics and dimensional stability