Method for removing coatings from metal substrates prone to...

Details Method for removing coatings from metal substrates prone to... Method for removing coatings from metal substrates prone to...

C - Chemistry, Metallurgy

09

D

C09D 9/00 (2006.01)

Patent

CA 2074545

The invention relates to a method for removing coatings, in particular, organic coatings from metal substrates which are easily corroded or discoloured: aluminimum, aluminium alloy, zinc or zinc alloy. Previously known compositions for this purpose were based on methylene chloride which is environmentally undesirable. In contrast, this invention uses a composition which comprises strong alkali, a polyhydric alcohol or ether derivative thereof and a pyrollidone and, or a lactone. The preferred pyrollidone is N-methyl pyrollidone.

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