Monday - May 28, 2018

Covestro Elastomers UTECH Europe 2018 preview

Desmodur® MDQ75164 System: the ultimate solution for mining applications

Material strength and durability as well as chemical and environmental resistance are important factors in choosing materials for mining equipment. While rubber was traditionally used in many applications, cast polyurethanes progressively took over due to their superior performances. In spite of this trend, special rubber compounds remain the preferred choice in some mining applications because of their specific characteristics.

As a well-established player in mining applications, Covestro has a number of proven cast polyurethane solutions for parts such as: single layer, double-layer and flip-flop screens, trommel parts, hydrocyclones, scrapers, inner pipe coating. However, there are, to this day, specific areas where specific grades of rubber are still favored. This is for instance the case for applications such as hoppers, ball mills and crushers.

Desmodur® MDQ75164 system: the cast PU system that outperforms Rubber in harsh applications
With these barriers in mind, Covestro looked for a polyurethane elastomer solution exceeding the market's standards. Pushing the limits of cast Polyurethane, Covestro developed a dedicated Desmodur® system with outstanding performance in terms of wear resistance. Available from 60 to 95 Shore A, the Desmodur® MDQ75164 systems show excellent behavior in regards to the properties expected in the demanding mining applications:
• Tear strength
• Abrasion loss
• Shock absorption

Desmodur® MDQ75164 system: the enhanced cast PU system for wear resistance
Although conventional MDI-Ester based systems remain a viable solution for usual mining applications such as screens, the Desmodur® MDQ75164 systems represent a significant improvement. Compared with conventional MDI-Ester cast polyurethane, this system demonstrates up to 70 percent better tear resistance .

Easy processing enabling large parts molding
The Desmodur® MDQ75164 systems are easy to process. Combined with their low viscosity components, their manageable pot-life and productive demolding time, allow molders to comfortably cast large parts.

About Covestro:
With 2017 sales of EUR 14.1 billion, Covestro is among the world’s largest polymer companies. Business activities are focused on the manufacture of high-tech polymer materials and the development of innovative solutions for products used in many areas of daily life. The main segments served are the automotive, construction, wood processing and furniture, and electrical and electronics industries. Other sectors include sports and leisure, cosmetics, health and the chemical industry itself. Covestro has 30 production sites worldwide and employs approximately 16,200 people (calculated as full-time equivalents) at the end of 2017.

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Forward-looking statements
This news release may contain forward-looking statements based on current assumptions and forecasts made by Covestro AG. Various known and unknown risks, uncertainties and other factors could lead to material differences between the actual future results, financial situation, development or performance of the company and the estimates given here. These factors include those discussed in Covestro’s public reports which are available at The company assumes no liability whatsoever to update these forward-looking statements or to conform them to future events or developments.