| abstract |
The present invention provides a polyamidamide resin which comprises a unit derived from ε-caprolactam and/or ε-aminohexanoic acid (hereinafter, referred to as "unit 1"), and a unit derived from a source of adipic acid. (hereinafter, this is also referred to as "unit 2"), and a unit derived from a self-diamine (hereinafter, referred to as "unit 3"), wherein the concentration of the amine group at the tail end of the polyamide resin is higher than that described above. The carboxyl group concentration at the tail end of the polyamide resin is larger, and the unit 1 is more than 60% by weight and less than 80% by weight with respect to the total amount of the unit 1, the unit 2, and the unit 3. |