Ppg Industries Ohio, Inc.

Ppg Industries, Inc.

Michael L Albu

Phillip J Beauchamp

Harry R Charles

Mervet S Boulos

Dean L Miles

Robert N Deneau

Timothy P O'Mara

Roger Forsberg

John J Boehmer

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 composition and method for treating oversprayed paints in paint spray booths is provided. The composition includes an aqueous solution of a compound such as chitosan, and a complex metal salt, such as aluminum chlorohydrate, capable of flocculating the oversprayed paint, and optionally, bentonite clay. The composition is useful for detackifying and flocculating oversprayed paint, and is particularly useful as a liquid concentrate for the addition to wash systems in paint spray booths for water-based and solvent-based paints. The composition is also useful in decreasing the time for phase separation of the organic phase and the aqueous phase in solvent-based removal processes.

Method for paint detackification using compositions containing chitosan

Compositions incorporating chitosan for paint detackification

Disclosed herein is an effective stripping composition which is particularly useful in the removal of paint from paint booths, said stripping composition comprising a solvent and an effective thickening agent combination of silica microparticles and a co-thickening agent such as a metal salt.

Paint stripping composition containing silica microparticles and polar

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Garden City, MI, United States of America

Michael L Albu