Aqueous coating compositions comprising curing agents which can be dispersed without solvent

US5977247A · kind A · utility

Assignee

• Vianova Resins GmbH & Co. KG · DE

Inventors

• Markus Schafheutle · Hochheim, DE
• Achim Voelker · Offenbach, DE
• Susanne Wehner · Villmar, DE
• Gerd Walz · Wiesbaden, DE

Key dates

• Filing date: Oct 3, 1997
• Grant date: Nov 2, 1999
• Expiry date: Oct 3, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31551
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

An aqueous coating composition useful as electro-deposition coatings includes (A') an aqueous dispersion of a resin (A) having functional groups which are reactive toward isocyanate, and (B') an aqueous, solvent-free dispersion of a solubilized masked polyisocyanate (B). The coating is cured by baking at a temperature which regenerates the isocyanate groups.