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New Developments for Two Component Urethane Primers

A new family of low viscosity MDI-based isocyanates has been developed for use in two component compositions for primer and protective coating applications. This new family of products shows excellent adhesion to a variety of substrates including concrete surfaces and wood. The products can be effectively applied on wet surfaces and compared to earlier products, have extended pot lifetimes. 

Product Number: 41206-225-SG
Author: Rafael E. Camargo, Katie L. Skok
Publication Date: 2006
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A new family of low viscosity MDI-based isocyanates has been developed for use in two component compositions for primer and protective coating applications. This new family of products shows excellent adhesion to a variety of substrates including concrete surfaces and wood. The products can be effectively applied on wet surfaces and compared to earlier products, have extended pot lifetimes. Pot life can be adjusted via a choice of polyols and accelerators. In coating applications, these new products produce films of excellent quality even at film thicknesses of 50 mils or less. The hardness and flexibility of the films can be easily adjusted by varying the ratio of the two components.  Representative properties and test data are presented.  

A new family of low viscosity MDI-based isocyanates has been developed for use in two component compositions for primer and protective coating applications. This new family of products shows excellent adhesion to a variety of substrates including concrete surfaces and wood. The products can be effectively applied on wet surfaces and compared to earlier products, have extended pot lifetimes. Pot life can be adjusted via a choice of polyols and accelerators. In coating applications, these new products produce films of excellent quality even at film thicknesses of 50 mils or less. The hardness and flexibility of the films can be easily adjusted by varying the ratio of the two components.  Representative properties and test data are presented.  

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