Estimation of parameters that correlate molecular structure of hindered amines with their stabilizing efficiency

摘要

Substances of a hindered amine (HA) class were studied as stabilizers of polyethylene. The diffusion and solubility of HAs were measured by the stack method. The correlation between physical parameters, structure of stabilizer molecules and efficiency was investigated. It was shown that both chemical and physical aspects could affect the efficiency depending on the structure of the molecule. The inverse character of changes in efficiency on Moisan's plot for a pair of hindered amines, based on mono- and bis-substituted phthalic acid esters, was discovered and the reasons for such a phenomenon are discussed.