Patent ID: 6858093

Claim:
A method of treating oversprayed waterborne and solventborne paint particles in a paint spray booth including a circulating water system, said method comprising contacting said oversprayed paint particles with an aqueous composition circulating though the water system, wherein the aqueous composition contains a liquid concentrate composition, said liquid concentrate composition comprising: (a) 2 to 40 percent by weight of a complex metal salt capable of flocculating the overspraved paint; (b) 0.1 to 10 percent by weight of a compound having the following structure: provided in an aqueous solution having a viscosity of from about 200 to 3000 centipoise; (c) acid rendering the compound soluble in water; and (d) water; wherein the liquid concentrate composition is provided in an amount of 0.01 to 10 percent by volume of water circulating through the water system.