ARTICLE PRODUCED BY INJECTION MOULDING WITH GOOD BARRIER PROPERTIES Russian patent published in 2012 - IPC B29C45/16 

FIELD: process engineering.

SUBSTANCE: invention relates to multilayer article produced by injection moulding and including barrier polymer composition layer comprising (A) 50 to 90 wt % of polyamide polymer including diamine structural block, 70 or molar percent of which represent derivatives of meta-xylylenediamine and structural block of dicarboxylic acid containing linear aliphatic α,ω- dicarboxylic C₄-C₂₀-acid and isophthalic acid in molar ratio of 30:70 to 100:0; (B) 2 to 45 wt % of modified polyolefin and (D) 2 to 45 wt % of polyamide (D) not containing meta-xylylenediamine fragments.

EFFECT: moulded articles feature excellent barrier properties.