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Desmodur ® blulogiq-based clearcoat improves EV coating process

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Massive rockers protect electric vehicle (EV) batteries from side impacts, but cause a longer heating and cooling curve during high-temperature heating processes. Paint shops don’t have to sacrifice efficiency or quality when using PPG®’s low temperature clearcoat based on Desmodur® blulogiq from Covestro thanks to its novel curing technology

Task

High quality clearcoat with outstanding appearance for low-temperature processes

PPG® set out to develop a 2K polyurethane clearcoat for Audi that can be applied in current plants by using existing dryers at 85°Celsius - a solution that helps shorten heating and cooling times. The clearcoat needed to meet the mechanical and chemical resistance as well as enhance the appearance of state-of-the-art coating systems.

PPG®’s Low Temperature 2K Premium Clear is a promising technology to increase efficiency, lower costs and reduce CO2 emissions without sacrificing quality.

Thomas Heußer

Head of Technology Development Materials and Process Engineering, Audi

Challenge

Lower the baking temperature without sacrificing quality

In existing dryers, reducing the baking temperature leads to insufficient curing of the clearcoat. Trying to compensate for this with a conventional catalyst causes an unacceptable appearance.

This new clearcoat enables our customers to achieve their EV production goals without compromising quality and performance.

Dr. Manfred Wunsch

Global Technology Transformation Director, PPG®

Solution

A clear solution for Audi with Desmodur® blulogiq

PPG® developed 2K Low Temperature Premium Clear - a new clearcoat based on a new thermolatent hardener. With this clearcoat, existing paint shops can complete the coating process in just 28 minutes at 85°Celsius, without sacrificing quality and performance. Better yet, it reduces process costs and CO₂ emissions.
Collaborating with Covestro, PPG® developed a low-temperature clearcoat based on Desmodur® blulogiq. This solution helps shorten heating and cooling times, bringing out the best in the coating process for electric vehicles.

Why Desmodur® blulogiq was the right solution for PPG®

  • Efficient: Enables a 28 minute coating process at 85° Celsius without sacrificing efficiency, coating quality and appearance.
  • More sustainable: Reduces energy costs and CO2 emissions.
  • Attractive appearance: No need to sacrifice aesthetics.

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