Process for preparing silver-containing aqueous formulation useful for electrically conductive or reflective coatings

US7976736B2 · kind B2 · utility

Assignee

• Bayer MaterialScience AG · DE

Inventors

• Matthias Boll
• Stefanie Eiden · Leverkusen, DE
• Johan Kijlstra · Odenthal, DE

Key dates

• Filing date: Jun 11, 2010
• Grant date: Jul 12, 2011
• Expiry date: Jun 11, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/298
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Process for preparing A silver-containing, disperse, water-containing formulation useful for producing electrically conductive and/or optically reflective coatings, which comprises (i) reacting a silver salt solution with a solution containing hydroxide ions, wherein at least one of said solutions comprises a polymeric dispersant, to produce an Ag2O sol, (ii) reacting the Ag2O sol obtained from step i) with a reduction agent, and (iii) purifying the solution obtained from step ii).