The smarter way to coat a car

Joel Neale
Joel Neale
Global Product Manager Caprolactones
+44 192 559 10 89
Coatings, Capa
8 December 2017

Capa™ is easy to use, can replace between 5–20 percent of resin in a formulation and can help you meet regulatory requirements. Pär Jörgensen, Technical Market Development Manager at Perstorp, explains what Capa™ can contribute to car coatings.

blue coated car door
What makes a good car coating? 

Durability, and resistance to abrasions, scratches, stone chips and impact, are all important properties. A lot of people in the industry are also talking about self-healing, which is basically the ability to regain the gloss and appearance of the coating in the event of a minor scratch. 

What is involved in formulating a car coating? 

Essentially, there are four layers: an ED (electrodeposition) coating for corrosion resistance, a primer for surface levelling and mechanical properties, a base coat to provide colour, and finally a clear coat for a high-gloss finish. 

What can Capa™ contribute to a car coating? 

Capa™ can be added to all four layers of coating, where it will help improve flexibility, as well as impact and stone-chip resistance. What makes Capa™ unique is that it can maintain these properties over a wide temperature range, from as cold as -30 °C to extreme heat. 

What benefits does this have for car owners and car manufacturers? 

It general, Capa™ will help prolong the long-term durability of the coating. It will help reduce scratches and marks from impacts, hopefully reduce the need for recoating, and prolong the life cycle of the coating. 

Are there any additional benefits for coating formulators? 

Capa™ is very easy to use and represents a very versatile tool as a resin modifier in the coating formulator’s tool box. It has higher technical values compared to conventional resins, such as acrylics and regular polyesters, which means it has properties like flexibility and abrasion resistance. In fact, as a partial replacement for resin, Capa™ can reduce the need for resin by around 5-20 percent compared to a conventional coating. 

Does Capa™ have any environmental benefits? 

Capa™ is an aliphatic polyester with low viscosity, which can reduce the demand for organic solvents in a coating formulation. This makes Capa™ ideal for low VOC or solvent-free coatings, and will help coating formulators improve their environmental footprint and meet regulatory requirements.

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