Corrosion resistant buffer system for metal products
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United States of America Patent
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Feb 3, 1998
Grant Date -
N/A
app pub date -
Oct 21, 1994
filing date -
Oct 21, 1994
priority date (Note) -
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Abstract
A system is disclosed for inhibiting the corrosion of ferrous and other metals by passivating the metals. The system includes novel buffered compositions which may be applied to metal products for preventing or retarding corrosion and methods for applying the buffered compositions to metal products such that corrosion protection of the products is achieved through passivation. The methods include an in-situ application to existing structures with metal reinforcement as well as applications to metal products during manufacture. Generally, the compositions may be in various forms and comprise a carrier component and one or more particulate pH buffer components. The particles of buffer are selected to retain the proximity of the metal at a pH at which the metal is passive to corrosion.
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