Aqueous coating for protecting spray cabins from enamel overspray and process for producing it

US5330564A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Juergen Geke · Goldkronach, DE
• Bernhard Zange · Morsbach, DE
• Hans-Joergen Rehm · Hilden, DE
• Hans Fehr · Goldkronach, DE
• Thomas Molz · Hilden, DE
• Kurt Buick · Neuss, DE
• Emil Bruegel · Grevenbroich, DE
• Lutz Huesemann · Haan, DE

Key dates

• Filing date: May 26, 1992
• Grant date: Jul 19, 1994
• Expiry date: May 26, 2012

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S210/93
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Aqueous and storage-stable compositions for the deposition of temporary barrier layers on spray-coating booths and the like contain PA1 5 to 80% by weight of one or more C.sub.8 -carboxylic acid and/or an alkali metal salt thereof, PA1 1 to 40% by weight of a pH-regulator consisting of one or more alkanol amine and/or alkali metal hydroxide, and PA1 1 to 15% by weight of one or more layered silicate and/or polyacrylate and/or carboxymethylcellulose, together with water and any further desired additives, and have a pH value of 6 to 10 and a viscosity of 30 to 50 DIN-sec. The invention also provides a process for the production of such compositions.