Method of producing fine-particle multicomponent glass powders for use as a glass flow for producing layers and decorations on glass, glass ceramic or ceramic

US5837025A · kind A · utility

Assignee

• Schott Glaswerke · DE

Inventors

• Petra Auchter-Krummel · Wörrstadt, DE
• Waldemar Weinberg · Kiebitzreihe, DE
• Christoph Lesniak · Kempten (Allgäu), DE
• Rudiger Nass · Zellingen, DE
• Helmut Schmidt · Riegelsberg, DE
• Nanning Joerg Arfsten · Ockenheim, DE

Key dates

• Filing date: Jun 3, 1996
• Grant date: Nov 17, 1998
• Expiry date: Jun 3, 2016

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S65/901
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention is directed to a method for producing low sintering fine-particle multicomponent glass powder having a particle size of the primary particle in the nanometer range. The method utilizes microemulsion techniques with subsequent separation of the particles out of the emulsion and calcination for utilization as glass flow having a sintering temperature <900.degree. C. or in a glass flow, for generating thin transparent layers or for generating color decorations on glass, glass ceramic or ceramic substrates after adding a coloring pigment to the glass flow. The microemulsion for producing the nanoscale glass powder particles is generated from a nonionic ambiphilic emulsifier with a component of 10 to 15 percent by weight on the emulsion, from an oil phase having a portion of 50 to 70 percent by weight and a glass precursor-containing aqueous salt solution having a portion of up to 31.3 percent by weight with salt contents of up to 45 percent by weight.