| abstract |
The present invention provides a polyamide containing 25-50 mol% of diamine unit, 25-50 mol% of dicarboxylic acid unit and 0.1-50 mol% of structural unit represented by formula (III). Wherein the diamine unit contains more than 50 mol% of aromatic diamine unit represented by formula (I), the dicarboxylic acid unit contains more than 50 mol% of linear aliphatic dicarboxylic acid unit represented by formula(II-1) and/or aromatic dicarboxylic acid unit represented by formula (II-2) in total. (In the formula, n is an integer of 2-18, Ar represents an arylene group, R represents a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group.) |