| 摘要 |
A method for manufacturing a polyamide resin comprises the processes of obtaining solid-state low class condensed product by polycondensation of dicarboxylic acid and diamine under existence of 0.01-0.5 wt% of a compound for total amount of the dicarboxylic acid and the diamine, and solid-state polymerizing the low class condensed product, wherein the dicarboxylic acid includes 70 mol% or more of aliphatic dicarboxylic acid having 9 to 12 carbon atoms for the total weight, and the diamine include 50 mol% or more of diamine presented by chemical formula 1. In the formula, R1 represents an alkylene group having one to three carbon atoms. |
