Adhesion of layers of adhesive which are applied onto polyolefin surfaces from aqueous dispersion

US4609420A · kind A · utility

Assignee

• BASF SE

Inventors

• Oral Aydin · Mannheim, DE
• Hans Kast · Mannheim, DE
• Hans-Joachim Fricke · Dirmstein, DE

Key dates

• Filing date: Dec 3, 1984
• Grant date: Sep 2, 1986
• Expiry date: Dec 3, 2004

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31938
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Layers of adhesives which are applied onto polyolefin surfaces from aqueous dispersion exhibit improved adhesion if a dicarboxylic acid dihydrazide of 2 to 10 carbon atoms and an aqueous dispersion of an adhesive polymer are applied, preferably as a mixture, onto the polyolefin surfaces which have been pretreated by corona discharge.