NEUTRALIZING/REDUCING AGENT, AND DESMEAR METHOD
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United States of America Patent
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Issued Date -
Jul 5, 2012
app pub date -
Sep 24, 2010
filing date -
Oct 8, 2009
priority date (Note) -
Abandoned
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Abstract
Disclosed is a neutralizing/reducing agent for neutralizing/reducing an oxidizing agent component that is adsorbed and remains on an object to be coated after the object is subjected to a desmear treatment with the oxidizing agent, which comprises a thioamide compound and a non-aromatic thiol compound. The neutralizing/reducing agent does not generate any gas during a neutralization/reduction treatment, and therefore the occurrence of defects caused by the neutralization/reduction on the surface of a through hole or a blind via hole can be prevented. Further, the neutralizing/reducing agent hardly dissolves copper, and therefore the occurrence of haloing can be prevented, and the blistering caused by the etching between an inner layer copper and a resin with the neutralizing/reducing agent can also be prevented.
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