| abstract |
The present invention provides a container having a polyester composition having enhanced carbon dioxide and oxygen barrier properties. The polyester composition includes polyester and a gas barrier strengthening additive. In certain embodiments, the gas barrier subject additive formula, X- (X 1) s -COO- (X 2) t - X 3 - (X 4) u -OOC- (X 5) v -X 6 or X -(X 1 ) s -OOC- (X 2 ) t -X 3- (X 4 ) u -COO- (X 5 ) v -X 6 Of the compound. |