Isocyanate-free technology wins EC AWARD
Thursday, 21 May 2015
During the opening ceremony of the European Coatings CONGRESS Dr Fred van Wijk and his team at Nuplex Resins were honoured with the EC AWARD. Their paper "Taming the Michael Addition reaction” presents Ultra-fast drying, low VOC, isocyanate-free technology for 2K coatings.
In their EC-Award winning paper, the team from Nuplex Resins around Dr Fred van Wijk focuses on a new low VOC, isocyanate- and tin-free coating system built on a novel blocked catalyst and kinetic control additive package used in conjunction with Michael Addition chemistry.
The authors’ results at a glance
Two-component urethane topcoats are well established in coatings applications. There is a need, however, for systems with increased productivity coupled with environmental and health and safety friendliness. The paper outlines the launch of a new, low VOC, isocyanate and tin free, technology which meets these needs.
The system is built on a novel blocked catalyst and kinetic control additive package used in conjunction with Michael Addition chemistry. Prototype paint formulae highlight the low VOC capability (<250 g/l) of this very fast drying 2K system (10 to 50 minutes, ambient) and the unique decoupling of dry time and pot life (>5 hours), expected to trigger new paint and process solutions.
The chemistry of the system and comparative results versus other topcoats are presented in the paper. The results show that the system has significant potential to displace existing two component topcoats in marine and protective and industrial OEM market applications, without compromise.
The whole article can be found in the current issue of the European Coatings JOURNAL.