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Sonja Schulte
19 March 2015 05:57:00 | Posted by: Sonja Schulte, European Coatings Journal
Isocyante-free 2K coatings systems:decoupling of pot-life and cure speed

We all know the advantages and disatvantages of  isocyante based coatings systems. Exposure to free isocyante can result in adverse health effects such as respiratory diseases and severe allergic sensitization. Further isocyantes undergo irreversible side reactions with water which can be problematic for the application of isocyated based coatings such as PUR coatings in humid environments. There is also a need in many application for faster drying and hardness development that can achieved with current isocyante chemistry. However, typical approaches to faster dry times using isocyante chemistry usually lead to shorter formulation pot-life. Now two different isocyante-free approaches will be presented at the European Coatings CONGRESS. Both offer decoupling of pot life and curing speed while offering performance comparable to established systems. In my opinion, this is a real breakthrough in coatings technology!

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