Formaldehyde-free binders for shaped articles

US6596386B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Bernd Reck · Arnstadt, DE
• Eckehardt Wistuba · Bad Dürkheim, DE
• Wilhelm Friedrich Beckerle · Frankenthal (Pfalz), DE
• Axel Kistenmacher · Ludwigshafen, DE
• Robert Rupaner · Ludwigshafen, DE
• Rainer Hummerich · Worms, DE

Key dates

• Filing date: Mar 17, 2000
• Grant date: Jul 22, 2003
• Expiry date: Mar 17, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/249925
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A formaldehyde-free aqueous binder comprisingA) a free-radically polymerized polymer containing from 5 to 100% by weight of units derived from an ethylenically unsaturated acid anhydride or from an ethylenically unsaturated dicarboxylic acid whose carboxyl groups can form an anhydride group, andB) an alkanolamine having at least two hydroxyl groups,is useful as binder for renewable raw materials in the form of fibers or chips to produce shaped articles.