Hexamethlene phosphonate concentrate
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United States of America Patent
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Feb 25, 1997
Grant Date -
N/A
app pub date -
Jul 28, 1995
filing date -
Sep 1, 1994
priority date (Note) -
Expired
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Abstract
Concentrated aqueous hexamethylene phonic acid solutions are described containing, in addition to high levels e.g. 40%-50% of phosphonic acid a narrowly defined level of non-oxidizing mineral acid, preferrably hydrochloric acid.
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