Monday - May 28, 2018

Covestro Elastomers UTECH Europe 2018 preview

Desmodur® MTX6076/MT99xx: the innovative advantageous solution

The processing of cast polyurethane systems may involve aromatic amines such as MOCA. Widely used as a chain extender for TDI based prepolymers, MOCA develops several advantages in terms of mechanical properties. However, while being easy to process, various constraints due to the REACH regulation may be applied to its handling in the near future.

To anticipate on the opportunities to come, the first idea is to shift to another amine chain extender instead of MOCA. However, this replacement often impacts both processing conditions and/or performance in a rather disadvantageous way.

On the other side, MDI based prepolymers may offer an advantageous way out. These systems allow to target specific performances. However, manufacturers generally have to observe the processing parameters with meticulous accuracy when using conventional MDI based prepolymers.

Easier handling in regards to Health & Safety

Aiming to offer the best solutions in terms of flexibility, properties, process and Health & Safety, Covestro made a significant push on MDI based systems to provide molders with high-performance solutions. These systems combine the best balanced advantages of both TDI and MDI based systems.

As for TDI based systems cured with MOCA, they provide easy processing and mechanical properties enabling them to suit a large variety of applications. On the other hand, like any MDI based system, they allow to target a specific performance and enable the access to a large hardness range with the same three components.

These products represent an innovation that provides manufacturers with an easy handling solution for producing polyurethane cast elastomers with an overall excellent range of properties.

Desmodur® MTX6076 based systems
The Desmodur® MTX6076 systems are more than just an easy handling alternative to TDI-MOCA systems. In fact, these products provide molders with an easy processing solution for producing polyurethane elastomers with an excellent range of properties. Compared with conventional TDI-MOCA systems, they develop better overall mechanical properties and are processed with more ease and comfort. The Desmodur® MTX6076 systems have been developed to provide easy processing with several advantages: adjustable pot life, low processing temperature and short demolding time. These characteristics make these systems suitable both for hand casting and machine casting of large parts.

Desmodur® MT99xx based systems
Thanks to their performance and especially their high dynamic properties, the Desmodur® MT99xx systems represent a solid alternative to TDI-MOCA systems. Moreover, these products are easy to handle and to process. With an excellent range of properties, they will be perfectly suited for applications requiring high dynamics such as wheels. With its adjustable pot life, Desmodur® MT99xx systems are easy to process. Their low viscosity increase while pouring allows both hand casting and machine casting of 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.