Use of an aqueous polymer dispersion to produce water-vapor barriers

US6258890A · kind A · utility

Assignee

• BASF SE

Inventors

• Jurgen Schmidt-Thuemmes · Schifferstadt, DE
• Eckehardt Wistuba · Bad Dürkheim, DE
• Andree Dragon · Speyer, DE
• Thomas Anselmann · Landau, DE

Key dates

• Filing date: Nov 8, 1996
• Grant date: Jul 10, 2001
• Expiry date: Nov 8, 2016

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31935
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

An aqueous polymer dispersion whose polymer is composed of vinyl-aromatic structures and conjugated dienes, and which has a reduced content of alkali metal ions, is used for producing water-vapor barriers; the invention also relates to the aqueous, low alkali metal polymer dispersion itself.