The Evaluation of Various Substituted Ureas as Latent Accelerators for Dicyandiamide Cured Epoxy Resin Formulations

This study deals with the evaluation of some common substituted ureas as DGEBA/dicy accelerators. United States patents covering the use of substitutedureas as accelerators began to appear in the late 60's. This work will help theepoxy formulator to decide which substituted urea, and what concentrationamount will work best to meet particular application needs. In this study we have identified the effect of each substituted urea on: 1. Degree of acceleration 2. Room temperature shelf life 3. Tg.


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