Organically modified silicic acids and silicates for delustering lacquers

US4038224A · kind A · utility

Assignee

• Deutsche Gold- und Silber-Scheideanstalt Vormals Roessler

Inventors

• Edith Eisenmenger · Offenbach, DE
• Otto Kuhnert
• Robert Kuhlmann · Lechenich, DE
• Peter Nauroth · Wesseling, DE
• Gunter Turk · Hanau, DE

Key dates

• Filing date: Apr 5, 1976
• Grant date: Jul 26, 1977
• Expiry date: Apr 5, 1996

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Modified silicic acids, gels, and silicates are produced by impregnation with a wax or a thermoplastic material, such as polyethylene. The silicic acids, silica gels, or silicates can be impregnated either as they are being formed or after they have formed by adding an aqueous suspension or dispersion of wax thermoplastic material to the silicic acids, gels or silicates. The mixture is then filtered, washed, dried, and finely ground. The organically modified silicic acids, gels, and silicates are useful as delustering agents in lacquer systems.