The polymer cell method (MPC) ‐ a new method to determine solubility o f disperse dyes, applicable between 80° and 140°C is described. This method is compared to the pressure filtration method. The results obtained using the two methods were found to be in good agreement. The application of the MPC method for determining solubility was investigated in the presence of levelling agents (Palegal A, B, HT, Sandogen PES, Invalon HTB) and was used to study the dyeing equilibria of a two‐step mechanism of disperse dyeing, i.e. dissolution of the dye dispersion and sorption of it by the substrate.
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Přikryl et al. (1979) studied this question.
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