POLYAMIDE RESIN AND USE THEREOF AND POLYAMIDE COMPOSITION CONSISTING OF SAME

摘要

Disclosed is a polyamide resin and the use thereof and a polyamide composition consisting of same. The repeating unit of the polyamide resin consists of the following components: 80-100 mol% of the polyamide resin being a dicarboxylic acid unit; 80-100 mol% of the polyamide resin being an aliphatic diamine unit with 2-14 carbon atoms; 0-20 mol% of the polyamide resin being a lactam or amino carboxylic acid unit with 6-14 carbon atoms; in the polyamide resin, the content of a bio-based carbon being more than 45%; wherein the molar content of the bio-based carbon is calculated according to the following equation: the content of the bio-based carbon = (the molar amount of the bio-based carbon/the sum of the molar amounts of organic carbons) *100%. The polyamide resin of the invention has a low amount of volatile gaseous substances and thus the polyamide composition prepared therefrom also has a low amount of volatile gaseous substances and can be used in the field of food contact materials. Furthermore, the surface state of the polyamide composition prepared after reflow soldering is relatively better.