Abstract: Provided is a polyamide comprising a diamine unit and a dicarboxylic acid unit, wherein the diamine unit comprises 0.1 mol % or more and less than 36 mol % of a diamine unit (X), and the diamine unit (X) is a diamine unit derived from an aliphatic diamine having 6 to 10 carbon atoms, the aliphatic diamine having an alkyl group having 2 or 3 carbon atoms bonded to a carbon atom at the 2-position when a carbon atom to which any one of amino groups is bonded is defined as the 1-position.

Abstract: The present invention relates to a polyamide composition containing a polyamide (A) having a dicarboxylic acid unit and a diamine unit and an inorganic filler (B), wherein more than 40 mol % and 100 mol % or less of the dicarboxylic acid unit is a naphthalenedicarboxylic acid unit; and 60 mol % or more and 100 mol % or less of the diamine unit is a branched aliphatic diamine unit and a linear aliphatic diamine unit of an arbitrary structural unit, and a proportion of the branched aliphatic diamine unit relative to the total 100 mol % of the branched aliphatic diamine unit and the linear aliphatic diamine unit is 60 mol % or more.

Abstract: A thermoplastic resin composition containing 3 to 10 parts by mass of a modified polyolefin (B) having a melt flow rate (MFR) at a temperature of 240° C. and under a load of 2.16 kg of 0.1 to 0.6 g/10 min, relative to 100 parts by mass of a thermoplastic resin (A) having a melting point of 270° C. or higher therein. Preferably, the modified polyolefin (B) has a 1% decomposition temperature of 300 to 450° C. Preferably, the thermoplastic resin (A) is a polyamide resin.

Abstract: The present invention relates to a polyamide that is a polyamide (A) having a dicarboxylic acid unit and a diamine unit, wherein more than 40 mol % and 100 mol % or less of the dicarboxylic acid unit is a naphthalenedicarboxylic acid unit, and 60 mol % or more and 100 mol % or less of the diamine unit is a branched aliphatic diamine unit and a linear aliphatic diamine unit of an arbitrary structural unit, and a proportion of the branched aliphatic diamine unit relative to the total 100 mol % of the branched aliphatic diamine unit and the linear aliphatic diamine unit is 60 mol % or more; and a polyamide composition containing the polyamide.