Preparation and method for coating glass vessels

US5330570A · kind A · utility

Assignee

• Th. Goldschmidt. AG · DE

Inventors

• Joachim Giersberg · Recklinghausen, DE
• Hartmut Gomm · Mühlheim, DE
• Dirk Naumann · Lorsch, DE

Key dates

• Filing date: Jul 20, 1992
• Grant date: Jul 19, 1994
• Expiry date: Jul 20, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C2218/112
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Glass vessels are coated by spraying a solution containing 86 to 1,290 g/L of (HO).sub.x Sn(C.sub.2 O.sub.4).sub.y on the 500.degree. to 600.degree. C. hot outer surface of the vessels. The solution may contain oxalic acid, HCl and a portion of the (HO).sub.x Sn(C.sub.2 O.sub.4).sub.y compound may be substituted by a compound (OH).sub.2 SnCl.sub.2. The coatings are uniform.