Patent · US Active

Use of aqueous polyanion-polyethyleneimine solutions for producing polymer films with oxygen-barrier properties

US9902872B2 · kind B2 · utility

1Cited by

2References

8Claims

0Family size

Assignee

BASF SE

Inventors

Ines Pietsch · Speyer, DE
Axel Weiss · Wilmington, US
Peter Preishuber-Pfluegl · Ludwigshafen, DE
Patrick Bippus · Ludwigshafen, DE
Klaus Huenerfauth · Maikammer, DE

Key dates

Filing date	May 27, 2013
Grant date	Feb 27, 2018
Priority date	—
Expiry date	Oct 2, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31993
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.