A recently introduced line of products for oil paintings chemically removing paint contain no organic solvents. These products are comprised principally of a combination of caustic compounds, such as calcium hydroxide, magnesium hydroxide, and sodium hydroxide.
Such compounds are in a water base and hand-painted oil painting generally form a paste. These products are applied to the painted material, and then allowed to dry for time periods as high as 48 hours. It is recommended by products of this type that the applied coating be covered with a polyethylene sheeting to retard drying and increase activity time.
After drying is completed, a crusty cheap oil paintings residue, formed during drying, is scraped off laboriously. Thereafter, the substrate must be neutralized with an acid using precautionary procedures to prevent run-off from entering ground waters.
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