Aqueous coating for protecting spray cabins from enamel overspray and process for producing it
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United States of America Patent
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Jul 19, 1994
Grant Date -
N/A
app pub date -
May 26, 1992
filing date -
Sep 25, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Aqueous and storage-stable compositions for the deposition of temporary barrier layers on spray-coating booths and the like contain 5 to 80% by weight of one or more C.sub.8 -carboxylic acid and/or an alkali metal salt thereof, 1 to 40% by weight of a pH-regulator consisting of one or more alkanol amine and/or alkali metal hydroxide, and 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.
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