Delacquering of aluminum cans for recycling
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United States of America Patent
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Jun 13, 1995
Grant Date -
N/A
app pub date -
Apr 25, 1994
filing date -
Apr 25, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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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