Patent ID: 8822629
Filing Date: 2014-09-02
Classification: C08G

Abstract:
1. A method of preparing a heat-resistant polyamide, the method comprising: introducing into a reactor a monomer mixture comprising a diester compound represented by Chemical Formula 1 and a liquid-phase diamine compound represented by Chemical Formula 2 increasing the internal temperature of the reactor to about 65° C. or more; and carrying out a condensation polymerization comprising increasing the reaction temperature to a temperature that is about 340° C. to about 400° C. and that is equal to or greater than the melting point of the heat resistant polyamide, and stirring the reactants for about 1 hour to about 3 hours, to give the heat resistant polyamide comprising a repeating unit represented by Chemical Formula 3 wherein the condensation polymerization is carried out neat.