Über den Zusammenhang zwischen der Polyveresterung und katalytischen Hydrolyse

The overall rate of polyesterification depends on the rate of the forward and reverse reaction. It is the purpose of this paper to establish relationships between these two reactions, depending on the structure of the monomers used, by comparing the rate constants of catalytic hydrolysis, polyesterification and equilibrium condensation. The differences in the rate of polyesterification observed on using different dicarboxylic acids are known to be caused by proton catalysis of the reaction. In our investigations the reverse reaction was found to be also affected by the acidity. The rate of acid hydrolysis increases with increasing acid strength of the dicarboxylic acid component in the polyester. Summarily, the results of extensive investigations prove the acid strength of the dicarboxylic acid to affect the equilibrium rate of polyesterification and hydrolysis in the same way.