| abstract |
PROBLEM TO BE SOLVED: To solve the above-mentioned problems of the prior art, to have good thermal stability at the time of drying or molding, and to prevent the color tone from being deteriorated even when a recycled product is used. An object of the present invention is to provide a polyamide that is less likely to generate foreign matters and has excellent productivity during molding and a polyamide composition comprising the same. A polyamide having a unit derived from an aliphatic dicarboxylic acid and an aromatic diamine as a main constituent unit, or a polyamide having a unit derived from an aromatic dicarboxylic acid and an aliphatic diamine as a main constituent unit. When the polyamide is dissolved in a 31 P-NMR measurement solvent and trifluoroacetic acid is added and then structural analysis is performed, the phosphorus atom content (P1) derived from the phosphorus compound detected by the structure of the following structural formula (formula 1) is Polyamide characterized by being 10 ppm or more. [Chemical 1] (Where R 1 and R 2 are hydrogen, alkyl group, aryl group, cycloalkyl group or arylalkyl group, and X 1 is hydrogen) [Selection figure] None |