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New UV-resistant PUR Matrix for Composites by Covestro at K 2016

Published on 2016-10-03. Author : SpecialChem

Covestro at K2016
Covestro at K2016
At the K 2016 plastics trade fair, Covestro will be unveiling innovative and sustainable solutions based on fiber-reinforced polyurethanes and polycarbonates. To fully exploit the advantages of composites, the fibers must be combined with the best-possible matrix material. Polyurethanes are steadily gaining ground in this segment thanks to their outstanding properties.

With their combination of high strength and low weight, composites can be put to diverse uses in a variety of applications and industries, where they can even replace conventional materials such as metal and wood.

New Polyurethane Matrix


At K 2016, Covestro will introduce a new polyurethane matrix for composites with very good UV, weathering and chemical resistance. Named Desmocomp®, it is formulated from aliphatic isocyanates and ideally suited to outdoor applications. It eliminates the need for any additional surface protection, such as coatings, UV absorbers, and UV-stable mats or films.

Advantageous Properties


  • The new matrix material can be processed extremely cost-efficiently, thanks above all to its long pot life and rapid curing. 
  • Like other polyurethane materials, Desmocomp® also displays high reactivity, variable viscosity and outstanding bonding strength. 
  • It wets a composite’s glass fibers very effectively, lending it high and lasting strength. 
  • The anti-graffiti properties and good flame retardance of the composites round out the profile.

PUR Matrix-based Composites Used in Side Elements for Sortimo’s New System-Unit
PUR Matrix-based Composites Used in Side Elements
for Sortimo’s New System-Unit

Applications of Desmocomp®


All of these advantages together open up promising opportunities for the use of Desmocomp® in a variety of outdoor applications. One current example is parts for lightweight commercial vehicles. Covestro’s development partner, Sortimo International GmbH, has presented composite parts made with the new matrix material at the IAA commercial vehicle show from September 22 to 29 in Hanover, Germany.

The parts are side elements in Sortimo’s new System-Unit, which displays high stability, durability and a weatherproof design, and therefore is the ideal option for storage in pick-ups and flat-bed trucks.

About Covestro


With 2015 sales of EUR 12.1 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, electrical and electronics, construction and the sports and leisure industries. Covestro, formerly Bayer MaterialScience, has 30 production sites around the globe and as of the end of 2015 employed approximately 15,800 people (full-time equivalents).

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Source: Covestro
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