Ppg Industries Ohio, Inc.

Robert N Deneau

Robert Ross Roelofs

Michael L Albu

Jonathan N Warren

John J Boehmer

Roger Forsberg

Timothy P O'Mara

A composition and method for treating oversprayed paints in paint spray booths is provided. The method includes contacting the paint overspray with a wash water system comprising an agitated solution containing a microorganism concentrate so as to collect the paint overspray in the agitated solution. The solution containing the paint overspray is passed to a holding area for phase separation into an organic phase containing paint overspray and an aqueous phase. The organic phase containing the paint overspray, which contains the paint solids portion, and, optionally, an organic solvents portion, is separated from the aqueous phase. The wash water system for treating paint overspray in paint spray booths contains a microorganism concentrate in an amount effective in precipitating the paint solids and, optionally, organic solvents, from the system.

Compositions and methods using a microorganism concentrate for paint overspray removal processes

A method of cleaning interior surfaces of fluid delivery systems including (a) passing through the system an abrasive cleaner composition including at least one liquid carrier containing solubilizable abrasive particles, at least some of which are in non-solubilized form, effective to abrade the material to be removed from the interior surfaces, and (b) rinsing the system with at least one fluid effective to (i) displace the carrier and (ii) remove the abrasive particles, at least partially by such chemical means as dissolution or decomposition or neutralization. Optionally, the method can include a first step of contacting the inside surfaces of the fluid delivery system with a pretreatment fluid capable of softening or loosening the material that is to be cleaned from the internal surfaces of the delivery system for a time sufficient to soften or loosen unwanted material. A cleaning kit including the abrasive cleaner and rinsing fluid is also provided.

Method, composition, and kit for abrasive cleaning of fluid delivery

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Lake Orion, MI, United States of America

Robert N Deneau