PREPARATION METHOD OF POLYAMIDE POLYMER WITH EXCELLENT DISPERSIBILITY OF TITANIUM DIOXIDE

摘要

PURPOSE: A method for preparing a polyamide polymer is provided, to prevent the re-aggregation of titanium dioxide by the increase of the surface potential of titanium oxide and to prevent the reduction of pH due to the addition of acetic acid by not using acetic acid, thereby improving the dispersibility of titanium dioxide. CONSTITUTION: The method comprises the step of inserting a basic amine compound represented by Ar-NH2(wherein Ar is an aromatic hydrocarbon group) and a monomer in the ratio of 0.05-0.2 : 100 by weight, together with the titanium dioxide slurry into a polymerization tower. Preferably the basic amine compound is at least one selected from the group consisting of benzylamine and aniline.