Most intriguingly, crystallinity in CHTT-containing specimens shifts the decline of the storage modulus to higher temperatures, indicating a significant impact of crystallinity on the materials' thermomechanical behavior, which goes hand in hand with considerable enlargement of the application temperature window towards higher temperatures. For less crystalline samples, where the viscous behavior is more dominant, transitions in the loss factor, which is the ratio of loss to storage modulus, are more pronounced than changes in the storage modulus and hence convey the melting transition better. Its maxima signify the glass transition temperatures (Tg) and melting point (Tm). All glass transitions occur between -25 °C and room temperature, with higher Tgs for more rigid network structures due to shorter trithiol arms of the comonomer. Upon close examination of the curves, two glass transitions are visible if two trithiol comonomers are present in the polymer. Most interestingly, all networks exhibit maxima corresponding to the melting of crystalline domains, occuring at 38 °C for the loosest polymer network containing purely ETTMP as a comonomer, and above 80 °C for all other samples. This corroborates the DSC results that all networks exhibit a certain degree of crystallinity, whereby CHTT-containing networks have the most pronounced effect on the thermomechanical behavior. This is consistent with the determined degrees of crystallinity, with the exception of the network containing only ETTMP as comonomer.