| 摘要 |
Overspray paint material containing a volatile solvent, of which a substantial proportion has been volatilized during spraying, is dispersed in an aqueous mixture including an organic solvent of higher boiling point than that in the paint, so that the solvent and paint form a continuous liquid phase floating on the surface of the remainder of the aqueous mixture, which phase is then removed from the surface of the mixture and the remainder re-circulated. The higher boiling-point solvent may be an aromatic hydrocarbon having a sp. gr. between 0.928 and 0.943, and an open-cup flash point of at least 190 DEG F. The aqueous mixture may also contain sodium silicate, sodium phosphate, and light petroleum; the solvent may contain dissolved stearic acid, glycerol mono-oleate, an alkyl aryl polyether alcohol or polyethylene glycol tertiary dodecyl thioether. Suitable apparatus is described in Specification 828,779. Specifications 754,585 and 815,470 also are referred to.
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