Synthesis of polycaprolactone using tin catalyst: a comparison between dibuthyltindilaurate and tin(ІІ)2-ethyl hexanoate catalyst

In this article tin(??)2-ethyl hexanoate and dibutyltindilaurate catalysts were compared in catalytic preparation of Polycaprolactone. The effects of various parameters such as temperature, reaction time, the molar ratio of monomer to initiator, the molar ratio of catalyst to monomer, the presence and absence of nitrogen, the presence and absence of the initiator has been studied. Consequently, it was found that dibutyltindilaurate catalyst needs shorter time for polymerization and led to higher molecular weight of the polymer than tin(??)2-ethyl hexanoate