Delacquering of aluminum cans for recycling

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 9/00 (2006.01) B08B 9/20 (2006.01) C22B 21/00 (2006.01)

Patent

CA 2147715

Aluminum can stock is delacquered by treatment with a composition comprising a mixture of a polyalkylene glycol polymer and an aqueous solution of a dicarboxylic acid such as oxalic acid. The cans are cleaned sufficiently for recycling and the solution can be reused to delacquer additional aluminum can stock.

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