Patent · US Expired

Formulation for extrudable vinylidene chloride copolymers having high barrier properties

US5002989A · kind A · utility

5Cited by
5References
61Claims
0Family size

Assignee

Inventors

Key dates

Filing dateSep 1, 1989
Grant dateMar 26, 1991
Priority date
Expiry dateSep 1, 2009

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC08L23/30
  • WIPO fieldMacromolecular chemistry, polymers
  • WIPO sectorChemistry

Abstract

The present invention is a formulated barrier composition containing tetrasodium pyrophosphate or magnesium hydroxide, high density polyethylene, epoxidzed vegetable oil, oxidized polyolefin and a paraffin or polyolefin wax. The composition has a substantially lower oxygen permeability than existing compositions and is at least equally extrudable.

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