USE OF AQUEOUS POLYANION-POLYETHYLENEIMINE SOLUTIONS FOR PRODUCING POLYMER FILMS WITH OXYGEN-BARRIER PROPERTIES

摘要

The use of an aqueous Solution comprising at least one polyanion and at least one high molecular weight polyethyleneimine is described, for providing oxygen barrier properties to a polymer film. The polyanion is a polymer comprising acid groups neutralized with a base selected from the group consisting of inorganic bases and monovalent organic bases and having a weight average molecular weight of at least 10000 g/mol.

主权项

1: A method of providing oxygen barrier properties to a polymer film, comprising applying an aqueous solution to at least one side of the polymer film, the aqueous solution comprising at least one polyanion and at least one polyethylenimine;
wherein the polyanion is a polymer comprising acid groups neutralized with at least one base selected from the group consisting of inorganic bases and monovalent organic bases and said polymer comprising acid groups having a weight average molecular weight of at least 10000 g/mol prior to neutralization; and wherein said polyethyleneimine has a weight average molecular weight of at least 25000 g/mol.