Metal removing solution and metal removing method using the same
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United States of America Patent
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Issued Date -
Mar 27, 2008
app pub date -
Sep 25, 2007
filing date -
Sep 25, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A metal removing solution of the present invention is a solution for removing palladium, tin, silver, palladium alloy, silver alloy, and tin alloy, and the metal removing solution contains a chain thiocarbonyl compound. A removing method of the present invention for removing palladium, tin, silver, palladium alloy, silver alloy, and tin alloy is a method for selectively removing a metal other than copper or copper alloy, from a system that includes copper or copper alloy and at least one selected from palladium, tin, silver, palladium alloy, silver alloy, and tin alloy, by using a metal removing solution containing a chain thiocarbonyl compound. Thus, the present invention provides the metal removing solution capable of removing palladium, tin, silver, palladium alloy, silver alloy, and tin alloy, the solution having an excellent property of removing palladium, tin, silver, palladium alloy, silver alloy, tin alloy, and the like without attacking copper, and having an excellent handleability since the solution does not contain any toxic substance; and the removing method using the foregoing metal removing solution.
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