Polyamide resin, preparation method therefof, and polyamide film and resin laminate comprising the same

A polyamide resin which comprises:

• a first polyamide segment including a repeating unit represented by the following Chemical Formula 1 or a block composed thereof;
• and
• a second polyamide segment including a repeating unit represented by the following Chemical Formula 2, or a block composed thereof,
• wherein the first polyamide segment and the second polyamide segment form a main chain including an alternating repeating unit represented by the following Chemical Formula 3:
• in the Chemical Formulae 1 and 2,
• Ar1 and Ar2 are each independently a substituted or unsubstituted arylene group having 6 to 20 carbon atoms, or a substituted or unsubstituted heteroarylene group having 2 to 20 carbon atoms, and
• in the Chemical Formula 3,
• A is the first polyamide segment, and
• B is the second polyamide segment,
• wherein the polyamide resin has a weight average molecular weight of at least 330000 g/mol,
• wherein a content of the repeating units represented by Chemical Formula 1 is in an amount of 80 mol % to 90 mol %, and a content of the repeating units represented by Chemical Formula 2 is in an amount of 10 mol % to 20 mol %, based on the total repeating units contained in the polyamide resin, and
• wherein the polyamide resin has a haze measured according to ASTM D1003 of 3.0% or less.