Abstract
Polycondensation and copolycondensation reactions including the formation of nylon 66 occured at room temperature in the presence of triphenyl phosphite and imidazole to give polyamides in a quantitative yield. Reaction conditions including solvents, temperatures and concentration of monomer and catalysts were investigated. A combination of triphenyl phosphite and imidazole was found to be satisfactory for the polycondensation. The polycondensation reaction may proceed through the formation of a mixed anhydride of carboxylic acid and phosphite, followed by aminolysis by amine. Although the yield of poly amide by this synthetic method was almost quantitative, the inherent viscosity of the product did not exceed more than 0.4. The low morecular weight might be due to a termination reaction, e.g., the formation of phosphite amide.
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