Barrier layer composition for polyolefin bodies

US5932304A · kind A · utility

Assignees

• COMPAGNIE PLASTIC OMNIUM SE · FR
• FEW Forschungs- und Entwicklungsgesellschaft Wolfen mbH · DE

Inventors

• Werner Probst · Salmünster, DE
• Peter Knobloch · Großaitingen, DE
• Christoph Roth · Bodenwerder, DE
• Hans-Jurgen Muller · Solms, DE
• Frank Apsel · Bad Dürrenberg, DE

Key dates

• Filing date: Jul 14, 1997
• Grant date: Aug 3, 1999
• Expiry date: Jul 14, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31928
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention refers to a barrier layer composition which is to be applied to at least one surface of a polyolefin body, in particular a polyolefin hollow body, wherein the composition contains: a) 40-70% by weight of one or more epoxide-containing metal oxide sols; b) 25-55% by weight of a binding agent polymer consisting of a terpolymer of maleic acid-maleic anhydride-vinyl monomers and/or a copolymer of maleic acid-vinyl monomers having a composition by mole of 50-75% of a vinyl monomer, 5-50% of maleic acid, and 0-20% of maleic anhydride; and c) 0.1-5% by weight of a catalyst on the basis of one or more tertiary amines. The hollow bodies coated with the barrier layer can be used particularly as storage containers for organic substances, in particular for organic solvents, fuels, mineral oils, pesticides, and other substances, for example liquids, the diffusion of which is to be inhibited or at least essentially reduced.