Non-isothermal thermal decomposition reaction kinetics of dimethylhexane-1,6-dicarbamate (HDC)

► We report the decomposition mechanism of dimethylhexane-1,6-dicarbamate (HDC). ► The process can be divided into three stages, and CO2 and CH3OH are the main gases. ► The first stage is the reaction for HDC to dimethylhexane-1,6-diisocyanate (HDI). ► We study the non-isothermal kinetics for the reaction of the first stage. ► The results play a guiding role in reactor design and process scale-up.