POLYMER MATERIAL WITH IMPROVED BARRIER PROPERTIES Russian patent published in 2017 - IPC C08L67/02 C08G65/40 C08J5/00 C08J5/12 

FIELD: chemistry.

SUBSTANCE: invention relates to polymer materials with improved barrier properties based on polyethylene terephthalate, designed for making containers, having improved gas permeability. Polymer material contains polyethylene terephthalate (PET) and a mother concentrate. Mother concentrate contains a mixture of PET and polybutylene terephthalate (PBT), as well as polyhydroxyether based on bisphenol A with molecular weight 25–36 thousand, pre-dissolved in dioxane. Preliminarily dried granules of polyethylene terephthalate are treated with a solution of mother concentrate.

EFFECT: polymer material has improved oxygen permeability and vapor permeability.

2 cl, 4 tbl