Solution and method for removing zinc from the surface of a galvanized metal
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United States of America Patent
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Sep 7, 1993
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N/A
app pub date -
Aug 17, 1992
filing date -
Aug 17, 1992
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Expired
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Abstract
The invention relates to a solution for removing zinc on the surface of a galvanized metal part, said solution comprising: phosphoric acid; alcohol of formula R--OH where R is an alkyl radical having from 1 to 6 carbon atoms; hydroquinone; and water. The invention also relates to a method for removing zinc on the surface of a galvanized metal part, said method comprising the steps of: preparing a solution containing phosphoric acid, alcohol of formula R--OH where R is an alkyl radical having from 1 to 6 carbon atoms, hydroquinone, and water; dipping said part in a bath of said solution; and removing said part from said bath and rinsing it.
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