Patent · US Expired

Enhanced oxygen barrier performance from modification of vinyl alcohol polymers (PVOH) or ethylene vinyl alcohol copolymers (EVOH)

US7026417B2 · kind B2 · utility

7Cited by
29References
9Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMay 21, 2003
Grant dateApr 11, 2006
Priority date
Expiry dateDec 28, 2023

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10T428/2947
  • WIPO fieldOther special machines
  • WIPO sectorMechanical engineering

Abstract

Herein are disclosed modified vinyl alcohol polymers (mPVOH), wherein the mPVOH can comprise structure VII: and at least one structure comprising structure IX: or structure X: wherein —R can independently comprise an unsubstituted hydrocarbon moiety comprising at least one alpha hydrogen or a substituted hydrocarbon moiety comprising at least one alpha hydrogen. The mPVOH can be useful in oxygen barrier applications, such as a forming an oxygen barrier layer of a packaging article. Also disclosed are methods of forming mPVOH and methods of using mPVOH to make packaging articles with a superior barrier to entry by atmospheric oxygen.

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