Dry and relatively nondestructive plasma process found effective in removing protective coats from old paintings. Process generates monatomic oxygen, which reacts with varnish, lacquer, polyurethane, acrylic, and other organic coating materials; reactions produce mostly carbon monoxide and water vapor, then simply pumped away by vacuum system in which plasma generated. Does not attack oxide-based pigments in underlying paint layers, and brush-stroke marks remain undisturbed.
Atomic Oxygen Removes Varnish And Lacquer From Old Paintings
NASA Tech Briefs ; 20 , 4
1996-04-01
Miscellaneous
No indication
English
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