| 摘要 |
1290643 Paint removing method and composition TEXIZE CHEMICALS Inc 19 April 1971 [29 Jan 1970] 20386/71 Heading C5D Oleoresinous paint droplets are removed from paint spray booths by (a) treating them with an aqueous alkali containing 0À005-2À00% of lithium hydroxide or a water-soluble lithium salt to saponify the paint and precipitate it as soap and (b) separating the precipitated soap from the product. The alkali may be sodium or potassium hydroxide or potassium carbonate. It may contain sodium or potassium silicate. |
