Synthesis of Pentaerythritol Adipate Ester-Based Zinc Alkoxide and its Thermal Stability on PVC

Submit Manuscript | http://medcraveonline.com PVC has significant defects due to its quick decomposition at temperature higher than 130°C [3-5]. This process results in a significant change in color, reducing the mechanical properties and the generated HCl exacerbates the decomposition of PVC, so the usage of PVC thermal stabilizers is inevitable [4,6]. Our group had synthesized pentaerythritol-based zinc alkoxide (PE-Zn) as a thermal stabilizer [7]. PE-Zn has outstanding performances in terms of color stability and long-term stability of rigid PVC. However, most of the alkoxide have high melting point and poor compatibility with PVC, which significantly restrict their wide applications. In order to decrease the melting point of polyolsbased metal alkoxide, an ester group, such as stearic acid, was grafted onto the polyols to obtain pentaerythritol stearate esterbased zinc alkoxide [8].