Paint detackification method
AssigneeAtlantic Richfield Company
InventorsChristopher R. Leitz, Joel S. Jordon, Michael S. Dalton
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Abstract
Paint spray booth wastes from clear oil-based coating compositions, such as lacquers, which have been collected in a water wash are easily detackified and removed from the wash water by contacting the wastes in the wash water with (1) a water-dispersible polymeric condensation reaction product of a urea or an amino triazine and an aldehyde and (2) a water-swellable clay.
Claims6
A process for detackifying spray booth wastes comprised of oil-based coating particles which are substantially free of insoluble pigments and fillers which have been collected in a water wash stream and clarifying the waste-containing water wash stream comprising
- (1) adding to and maintaining in the water wash stream (a) at least about 5 ppm of at least one water-dispersible polymeric condensation reaction product of at least one polyfunctional compound selected from ureas and amino triazines and at least one aldehyde, and (b) at least about 10 ppm of at least one water-swellable clay,
- (2) removing the detackified coating particle wastes from the water wash stream.
Dependencies are inferred from the claim text.