Nortru, Inc.

Robert A Patzelt

Edwin C Zuerner

Norman Foster

A composition for treating oversprayed paints that contains an effective amount of a carbonyl compound such as alcohol esters and condensation products of alcohol esters and carboxylic acid in water together with a suitable surfactant. The carbonyl compound is capable of dissolving paint while remaining non-reactive with water. The alcohol ester employed has the general formula: ##STR1## The alcohol ester derivative employed has the general formula: ##STR2## R' and R' are a substituted or unsubstituted linear alkyl group containing 1 to 8 carbon atoms, R and R'' are linear or branched alkyl groups containing 1 to 10 carbon atoms, and R and R'' are either identical or different alkyl functionalities.

Composition for the treatment of overspray in paint spray booths

A composition for treating oversprayed paints that contains an effective amount of an essentially non-volatile carbonyl compound, an effective amount of an ethoxylated alkyl phenol surfactant in water together with a suitable emulsifier. The carbonyl compound is capable of dissolving paint solids while remaining essentially insoluble in and non-reactive with water. The carbonyl compound can be an alcohol ester having the general formulae ##STR1## an alcohol ester derivative having the general formula: ##STR2## in which R' and R' are a substituted or unsubstituted linear alkyl groups containing 1 to 8 carbon atoms, and R and R'' are linear or branched alkyl groups containing 1 to 10 carbon atoms. The surfactant has an average ethylene oxide-to-nonyl phenol ratio between 4:1 and 8:1.

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Bloomfield Hills, MI, United States of America

Robert A Patzelt