Injection molded body having excellent barrier property

Abstract

An injection molded article comprising: (A) 10 to 60% by mass of a polyamide resin comprising a diamine unit 70 mol % or more of which is one or more m-xylylenediamine units and a dicarboxylic acid unit 70 mol % or more of which is one or more dicarboxylic acid units comprising a C 4 to C 20 α,ω-linear aliphatic dicarboxylic acid and isophthalic acid at a molar ratio of from 30:70 to 100:0; and (E) 40 to 90% by mass of a mixed polyolefin comprising (C) 40 to 100% by mass of a polyolefin and (B) 0 to 60% by mass of a modified polyolefin, wherein at least a part of the polyamide resin (A) is dispersed in a layered state.

1 . An injection molded article comprising:
 (A) 10 to 60% by mass of a polyamide resin comprising a diamine unit 70 mol % or more of which is one or more m-xylylenediamine units and a dicarboxylic acid unit 70 mol % or more of which is one or more dicarboxylic acid units comprising a C4 to C20 α,ω-linear aliphatic dicarboxylic acid and isophthalic acid at a molar ratio of from 30:70 to 100:0; and   (E) 40 to 90% by mass of a mixed polyolefin comprising (C) 40 to 100% by mass of a polyolefin and (B) 0 to 60% by mass of a modified polyolefin,   wherein at least a part of the polyamide resin (A) is dispersed in a layered state.   
     
     
         2 . The injection molded article according to  claim 1 , wherein the modified polyolefin (B) is obtained by graft-modifying the polyolefin (C) with an unsaturated carboxylic acid or an anhydride thereof. 
     
     
         3 . The injection molded article according to  claim 1 , wherein the mixed polyolefin (E) comprises (C) 50 to 90% by mass of a polyolefin and (B) 10 to 50% by mass of a modified polyolefin.