Modified huminates and their preparation
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United States of America Patent
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Nov 1, 1994
Grant Date -
N/A
app pub date -
Oct 14, 1992
filing date -
Oct 17, 1991
priority date (Note) -
Expired
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Abstract
A modified alkali metal or ammonium huminate being made from molecules of the group consisting of ##STR1## wherein R.sub.1, R.sub.3 and R.sub.4 are individually hydrogen or --OH, R.sub.2 is ##STR2## or --CH.sub.2 -- and R.sub.5 and R.sub.6 are individually selected from the group consisting of hydrogen, --OH and --OCH.sub.3, with the proviso that R.sub.4, R.sub.5 and R.sub.6 are not all hydrogen at the same time and their preparation and their medical uses.
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